Abstract: The present invention provides a medical imaging system comprising a guidance means for guiding a carriage along the longitudinal direction of a patient couch, and an imaging ring system with a carriage ring fixed to the carriage, a first rotatable ring carrying a first imaging unit, and a second rotatable ring carrying a second imaging unit, wherein the first and second rotatable rings are configured to be rotated independently from each other on the carriage ring. Preferably, the first imaging unit is a radiation source and the second imaging unit is a radiation detector. The invention further provides a preferably ceiling mounted patient positioning system for use in a medical intervention, comprising a robotic arm having six axes, and a patient couch wherein the couch is fixed to the robotic arm via a C-shaped bow.

Abstract: A method and system comprising: generating at least one slice image by carpeting a multitude of digital images based upon a two-dimensional (2-D) reference system, each of the multitude of digital images associated with a location in the 2-D reference system and each showing a representation of an arborization and/or landmark such that digital images not showing a representation of an arborization and/or landmark are excluded; carpeting the multitude of digital images together to create a slice image; aligning the slice image with other similarly created slice images using landmark information to determine the amount of 2-D rotation and/or translation to be applied to each slice image; vectorizing the representation of the arborization on each slice image, the vectorization creating a series of segments; assigning a type to at least one of the series of segments based on a unique characteristic of arborization; and grouping related segments together.

Abstract: When the diagnostic center position and a reconstruction FOV are designated using a tomographic image, a system control device controls a top plate of a table to move from side to side and up and down so that the designated diagnostic center position reaches the center position of scanning. A scanner is provided with a plurality of compensation filters configured to adjust X-ray irradiation distribution, and the system control device selects a proper compensation filter according to the designated reconstruction FOV from among the plurality of compensation filters, switching to the selected compensation filter. The compensation filters include at least a compensation filter (size L) of wide-width X-ray irradiation distribution and a compensation filter (size S) of narrow-width X-ray irradiation distribution in a scanner-turning direction. When the designated reconstruction FOV is a predetermined threshold or less, the compensation filter is switched to the S-sized compensation filter.

Abstract: An imaging system including an integral computed tomography and interventional (CT/I) system that includes a large-area detector configured to acquire projection data corresponding to a field of view of the system from one or more view angles is presented. The system includes a computing device operatively coupled to the CT/I system and configured to process the acquired projection data to generate a 2D projection image in real-time, a 3D cross-sectional image of a region of interest in the subject, a combined image using the 2D projection image and the 3D cross-sectional image and/or control selective generation of the 2D projection image, the 3D cross-sectional image and/or the combined image based on one or more imaging specifications. The system also includes a display operatively coupled to the computing device and configured to display the 2D projection image, the 3D cross-sectional image and/or the combined image based on the imaging specifications.

Abstract: The invention relates to means for determining the spatial configuration of a biological body (P) on a surface, particularly on the surface of a patient support (150). One embodiment of these means is a sensor system (110) that can be applied to a patient support (150) and that comprises a plurality of sensor units (111), wherein each of these sensor units (111) has an adjacent sensitive zone (112) in which the presence of a biological body (P) induces a detection signal. The sensor unit may particularly comprise a microwave coil (111).

Abstract: A system for radiotherapy that includes a couch upon which a patient being treated by the system is positioned, the couch having continuous arc rotation for delivery accelerated irradiation to the patient.

Abstract: An imaging method includes obtaining a first image data for a subset of a target region, the subset of the target region having a first metallic object, obtaining a second image data for the target region, and using the first and second image data to determine a composite image. A imaging system includes a first detector configured to provide a first projection data using a first radiation having high energy, and a second detector configured to provide a second projection data using a second radiation having low energy, wherein the first detector has a first length, the second detector has a second length, and the first length is less than 75% of the second length.

Abstract: A method includes identifying at least first and second angles of rotation of the rotating gantry at which first and second pre-scans are acquired, wherein the first and the angles of rotation are different angles, acquiring data, via the imaging system while rotating the rotating gantry, only during a predetermined angular range about the first angle of rotation for a first plurality of rotations from the start to the end pre-scan positions and during the predetermined angular range about the second angle of rotation for a second plurality of rotations from the start to the end pre-scan positions, and reconstructing a first pre-scan based only on the data acquired during the predetermined angular range about the first angle of rotation and a second pre-scan based only on the data acquired during the predetermined angular range about the second angle of rotation.

Abstract: The invention relates to an X-ray CT system for measuring three-dimensional shapes, while the X-ray system is capable of extracting three-dimensional shape information with high accuracy in consideration of beam hardening depending on a material and thickness of a specimen. The X-ray CT system includes an optical distance meter and a CT image analyzing unit. The optical distance meter measures an outer shape of the specimen simultaneously with a measurement of projection data. The CT image analyzing unit calculates a boundary threshold for the specimen on the basis of a CT image and a measurement value of the outer shape.

Abstract: A method is disclosed for assisting in determination of the suitability of a patient for a scan of the heart of the patient using an X-ray computer tomograph. In at least one embodiment of the method, a) an electrocardiogram of the patient is recorded; b) the electrocardiogram is evaluated by predicting the occurrence time of at least the immediately following R wave on the basis of at least four immediately consecutive R waves of the electrocardiogram which were measured last, and comparing this with the actual measured occurrence time of the next R wave; and c) wherein the quality of the prediction is visualized qualitatively. Further, in at least one embodiment, a device is disclosed including an ECG instrument and a computation device for carrying out the method. At least one embodiment of the invention furthermore relates to a method and a device for scanning the heart of a patient on the basis of a prediction of R waves.

Abstract: According to one embodiment, a CT scanning tabletop includes a tabletop body and an aid. The tabletop body has a placement surface where a subject is to be placed, and is formed in a manner that an X-ray transmission loss by one end portion in a longitudinal direction thereof is smaller than an X-ray transmission loss by a portion of the tabletop body other than the one end portion. The aid is provided on the one end portion in a manner that the aid is attachable and detachable by moving in advancing and retreating directions toward and away from the placement surface, the aid is configured to hold a part of the subject.

Abstract: An apparatus for attenuating high energy radiation including an attenuation member for attenuating high energy radiation in a high energy radiation field emitted from a high energy radiation source towards a subject. A control unit is provided for selectively activating the attenuation member. A method for attenuating high energy radiation is also disclosed.

Abstract: An image processing device acquiring pseudo projection data by calculation when a virtual metallic body having a predetermined X-ray absorption coefficient is set in a photographic region of X-ray CT photography in a pseudo manner based on projection data, and the image processing device reconstructing the pseudo projection data to acquire pseudo CT image data. The image processing device acquires luminance (virtual metallic body luminance) of a virtual metallic body in the pseudo CT image data, and specifies a position of a metal equivalent region having luminance corresponding to the virtual metallic body luminance in normal CT image data. The image processing device acquires correction projection data by performing correction processing to the luminance of the metal equivalent region in the normal projection data, and the image processing device reconstructs the correction projection data to acquire correction CT image data.

Abstract: The present invention relates to a data processing method for use in the field of radiation therapy and for determining a position of a treatment body part relative to an actual arrangement of at least one position of a treatment beam issued by a treatment device, the position being called monitoring tissue position and the treatment body part being a soft tissue part of an anatomical structure of a patient; the data processing method being constituted to be performed by a computer and comprising the following steps: providing CBCT data describing a three-dimensional CBCT image of the anatomical structure, the three dimensional CBCT image representing the treatment body part and a bony structure in a relative position to each other, called tissue-bone pre-alignment position, at a point in time, called pre-alignment time; providing x-ray data describing information on a position of the bony structure, called monitoring bone position, relative to the actual arrangement at a point in, time during treatment, call

Abstract: A patient alignment system for a radiation therapy system. The alignment system includes multiple external measurement devices which obtain position measurements of components of the radiation therapy system which are movable and/or are subject to flex or other positional variations. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The alignment system can be provided as an integral part of a radiation therapy system or can be added as an upgrade to existing radiation therapy systems.

Abstract: A bed and gurney extender for selective attachment to a standard hospital bed or gurney for supporting the head of a patient during scanning, comprising: a support for supporting the head of the patient during scanning, wherein at least a portion of the support is X-ray transparent; and an adapter for selectively attaching the support to the bed or gurney.

Abstract: Systems, methods, and related computer program products for medical imaging and image-guided radiation treatment (IGRT) are described. In one preferred embodiment, an IGRT system provides intrafraction target tracking based on a comparison of intrafraction x-ray tomosynthesis image data with initial x-ray tomosynthesis image data acquired with the patient in an initial treatment position, the initial x-ray tomosynthesis image data having an inherent registration with co-acquired image data from a setup imaging system integral with, or having known geometry relative to, the tomosynthesis imaging system. Repeated registration of intrafraction x-ray tomosynthesis image data with pre-acquired reference image data from a different frame of reference is not required during intrafraction radiation delivery. Advantages include streamlined intrafraction computation and/or reduced treatment delivery margins.

Abstract: Among other things, a rotatable drum for a radiology imaging modality is provided herein. The rotatable drum comprises a bore, defined by an inner circumference of a sidewall of the rotatable drum. In one embodiment, the sidewall comprises one or more apertures through which radiation may pass. By way of example, a radiation source and a detector array may be mounted outside of the bore (e.g., on an outside surface of the sidewall) and apertures in the sidewall may permit radiation to pass from the radiation source to the detector array without being attenuated by the sidewall of the drum. In another embodiment, the detector array may be comprised of a plurality of detector modules that may be individually mounted/dismounted from the rotatable drum, and in one example, may provide structural support to the rotatable drum.

Abstract: An X-ray CT apparatus according to an embodiment includes: an X-ray irradiator configured to emit X-rays to the examinee on a table; an X-ray detector configured to detect X-rays transmitted through the examinee on the table; a data collector configured to collect transmission data on those X-rays; a movement drive unit configured to move one of the table and the X-ray irradiator relative to the other in an outward direction and then in a homeward direction, the outward direction and homeward direction being opposite directions along a body axis of the examinee on the table; a position detector configured to detect a relative position between the table and the X-ray irradiator; and a data collection controller configured to control timings for starting and stopping data collection by the data collector, based on the relative position between the table and the X-ray irradiator.

Abstract: Lesion positioner systems and, which perform positioning of a lesion A by moving a top board for allowing a subject to be placed thereon, set an isocenter of a diagnostic 3D imaging unit as a virtual isocenter at the time when a treatment table is in a 3D imaging diagnosis position, and positions the lesion A to the virtual isocenter, based on a three-dimensional diagnostic image in consideration of particle beam therapy. A treatment table moving mechanism moves the treatment table to the treatment position relative to the particle beam therapy system while maintaining states of the top board and the lesion positioner systems and at the time of positioning, thereby positioning the lesion A to the isocenter of the particle beam therapy system.

Abstract: The invention provides methods and apparatus for image processing that perform image segmentation on data sets in two- and/or three-dimensions so as to resolve structures that have the same or similar grey values (and that would otherwise render with the same or similar intensity values) and that, thereby, facilitate visualization and processing of those data sets.

Abstract: A method for locating a guide wire axis on a femoral neck comprises the steps of tracking a position and orientation of a femur; registering a frame of reference with respect to the position and orientation of the femur from a first registration probe mounted onto the femur in a predetermined configuration, the frame of reference having preoperative planned data pertaining to the femoral neck; digitizing femoral neck data with respect to the position and orientation of the femur from a second registration probe positioned onto the femoral neck at desired orientations; calculating a position and orientation of the guide wire axis with respect to the position and orientation of the femur as a function of the preoperative planned data and the femoral neck data.

Abstract: There is provided an X-ray composite apparatus capable of performing, with one unit, X-ray CT and element analysis by fluorescent X-rays. The X-ray composite apparatus 100 includes an X-ray source 110 generating cone beam X-rays, a sample support 150 holding a sample S, collimator parts 130 and 140 capable of narrowing the cone beam X-rays to form parallel X-rays, depending on the intended use, between the X-ray source and the sample support 150, a two-dimensional detector 170 detecting the cone beam X-rays transmitted through the sample S, and a fluorescent X-ray detector 176 detecting fluorescent X-rays radiated from the sample S, and when the apparatus is used for X-ray CT, the apparatus irradiates the sample with the cone beam X-rays, while when the apparatus is used for fluorescent X-ray analysis, the apparatus irradiates the sample S with the parallel X-rays.

Abstract: According to the present embodiment, an image diagnosis apparatus includes a first image taking device that takes an image of a patient placed on a couchtop by using an X-ray emission; a second image taking device that takes images in positions by moving an image taking position of the patient by a predetermined distance at a time, along the body-axis direction; a position estimating unit; and a correction processing unit. The position estimating unit estimates a couchtop position for each of the image taking positions of the second image taking device, based on information about warping of the couchtop of the first image taking device. The correction processing unit uses information about the couchtop positions estimated by the position estimating unit, for performing a position correcting process on the images obtained by the image taking devices.

Abstract: An X-ray CT apparatus according to an embodiment includes: a table on which an examinee lies down; an X-ray irradiator including an X-ray tube emitting X-rays to the examinee on the table and a diaphragm blocking the X-rays and capable of opening/closing; an X-ray detector detecting X-rays transmitted through the examinee on the table after being emitted by the X-ray irradiator and passing through the diaphragm; a rotating gantry supporting the X-ray irradiator and detector; a rotation drive unit rotating the rotating gantry about a body axis of the examinee on the table; a movement drive unit moving the table in a direction of the body axis of the examinee on the table; a positional information acquirer acquiring positional information on the moving table; and a controller controlling opening and closing operations of the diaphragm of the X-ray irradiator based on the positional information on the table.

Abstract: An image processing device of a computer tomography system includes an interface and a calibration data determiner. The interface is implemented to receive a first set of X-ray recordings of an object to be examined from first discrete recording angles and to receive a second set of X-ray recordings of the object to be examined from second discrete recording angles. The calibration data determiner is implemented to determine calibration data for the computer tomography system on the basis of the first set. The first set is further recorded during a first rotation run wherein the computer tomography system and the object to be examined rotate relative to each other, wherein the second set is recorded during at least a further rotation run after the first rotation run. On the basis of the calibration data and the first and second sets a computer tomography recording is reconstructable.

Abstract: An apparatus for reducing photodiode thermal gain coefficient includes a bulk semiconductor material having a light-illumination side. The bulk semiconductor material includes a minority charge carrier diffusion length property configured to substantially match a predetermined hole diffusion length value and a thickness configured to substantially match a predetermined photodiode layer thickness. The apparatus also includes a dead layer coupled to the light-illumination side of the bulk semiconductor material, the dead layer having a thickness configured to substantially match a predetermined thickness value and wherein an absolute value of a thermal coefficient of gain due to the minority carrier diffusion length property of the bulk semiconductor material is configured to substantially match an absolute value of a thermal coefficient of gain due to the thickness of the dead layer.

Abstract: Methods, computer-readable mediums, and systems are provided. In one embodiment, a method detects at least one faulty X-ray detector signal and adjusts a conveyor speed and/or a gantry speed in accordance with the detection to increase information for image reconstruction. In another embodiment, a method detects a high volume time. Upon detection of the high volume time conveyor speed and gantry speed is increased during the high volume time. After expiration of the high volume time, the conveyor speed and gantry speed is reduced. In yet other embodiments, the computer-readable mediums and systems are also provided which perform similar features recited by the above methods.

Abstract: A system and method of optimizing delivery of a radiation therapy treatment. The system optimizes treatment delivery in real-time to take into account a variety of factors, such as patient anatomical and physiological changes (e.g., respiration and other movement, etc.), and machine configuration changes (e.g., beam output factors, couch error, leaf error, etc.).

Abstract: A method and device are provided for matching a patient coordinate system (PCS) of a nuclear medical imaging scanner with a coordinate system of a CT scanner in a multimodality modular imaging system, based on a predefined relationship between a vertical position of a patient bed during the NM scan; an axial position of the patient bed during the NM scan; an axial distance between a gantry of the NM scanner and a gantry of the CT scanner; and a vertical distance between a center of orbit of the NM scanner and a center of rotation of the CT gantry.

Abstract: A radiotherapy apparatus control method according to the present invention includes: a step S6 of calculating rotational and first translational correction amounts based on a position and orientation of a first region represented by a radioscopic image of a subject; and a step S9 of calculating a second translational correction amount based on a position and orientation of the second region represented by the radioscopic image and the rotational correction amount; and a step S10 of driving a couch so that it rotates by the rotational correction amount and translates by the second translational correction amount. The first region is larger than the second region. According to such a method, the second region can be arranged in a predetermined position at higher accuracy compared with a case where the position of the couch is adjusted by using the position and orientation of only one of the first and second regions.

Abstract: A radiation tomography apparatus comprising a first imaging device for taking tomography images of a subject by introducing the subject in an introduction direction of the subject, a support member for supporting the subject, a support-member moving device for moving the support member in the introduction direction of the subject, a support-member movement controller for controlling the support-member moving device, a first cylinder provided in a first imaging view field of the first imaging device and having an opening extending in the introduction direction for introducing the support member and a first positioning device for positioning the first cylinder relative to the first imaging view field, the first cylinder guiding the movable support member.

Abstract: A method of maintaining a constant iso-center point, while dynamically changing an area of interest during an imaging procedure is provided. The method comprises: allowing a user to move from an initial area of interest to new area of interest by allowing permissible axes motions; dynamically calculating the iso-center point while moving from the initial area of interest to the new area of interest as a function of relative distance between the initial area of interest and the new area of interest and as a function of parameters indicating relative motion of permissible axes; identifying the new area of interest by using at least one permissible axis motion; and calculating the iso-center point at the new area of interest after locking all the permissible axes motions except table tilt axis movement.

Abstract: A subject support (118) for an imaging system (100) includes a moveable portion (122) that includes a surface (204) on which the subject is loaded and that is configured to move into an examination region of the imaging system where the subject is to be scanned. The support further includes a scan position identifier (126) that generates a signal indicative of at least one of a start scan position or an end scan position for a predetermined region of interest of the subject based on a location of the region of interest on the moveable portion of the subject support for an arbitrary relative position of the moveable portion with respect to the examination region.

Abstract: An X-ray image diagnosis apparatus according to embodiments includes: a table on which an examinee lies down; a table driving unit configured to move the table upward and downward; an imaging device configured to take a side image of the examinee by irradiating a side of the examinee on the table with X-rays and detecting X-rays transmitted through the examinee; and a controller configured to control the table driving unit so that the table driving unit moves the table upward or downward to make a center position of the examinee on the table in a thickness direction of the examinee coincide with a center position of the side image in an upward-downward moving direction of the table.

Abstract: A medical imaging apparatus provided with a position recognition member, capable of achieving a precise position recognition without an additional calibration process and preventing the position recognition errors on account of a long term use of components includes an X-ray generating portion configured to generate X-rays and transmit the X-rays, an X-ray detecting portion configured to detect the X-rays transmitted from the X-ray generating portion, a moving portion provided on at least one of the X-ray generating portion and the X-ray detecting portion to move the at least one of the X-ray generating portion and the X-ray detecting portion, and a position recognition member comprising a bar code portion configured to recognize a position of the at least one of the X-ray generating portion and the X-ray detecting portion, which move along the moving portion, and a bar code reader portion to recognize the bar code portion.

Abstract: Systems and methods for ultrasound simulation using depth peeling are disclosed. In one disclosed embodiment, a method includes the steps of receiving a sensor signal including a position and an orientation of a simulated ultrasound device, the position and orientation associated with a virtual physical environment comprising a first virtual object; determining a first peel associated with the first virtual object; determining a second peel associated with the first virtual object; determining a first characteristic of a pixel located between the first peel and the second peel; generating a display signal based on the first characteristic, the display signal configured to cause a visual display of the virtual physical environment; and outputting the display signal to a display device.

Abstract: Provided is a medical X-ray CT imaging apparatus including: a base (22); a support part (30) including a support arm part (30) that supports an X-ray source (36) and an X-ray detector (37) so as to be opposed to each other, and a rotation support part that supports the support arm part (32) in a rotatable manner with respect to the base (22); and a rotary drive part that rotatively drives the support part (30). At least one of the base (22) and the rotary support part (40) includes a cavity (48) forming a space around a rotation axis (A). The cavity (48) is provided with a cylindrical body (60) disposed in a rotatable state with respect to the support part (30).

Abstract: A position of a center detector of a radiation scanner can be determined without shutting down the scanner and/or manually positioning a phantom in the scanning field of the scanner. A phantom, comprising a target, is scanned to create an axial image of the phantom. The target is masked in the axial image, producing a masked axial image of the phantom. The masked axial image is reprojected in projection space, and the axial reprojection is compared to an axial projection or a rebinned axial projection of the phantom that was used to create the axial image. A target axial projection of data related to the masked target, created from the comparison of the axial projection or the rebinned axial projection and the axial reprojection, is used to determine the position of the center detector.

Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.

Abstract: Image tracking systems, and corresponding methods, are described. In some embodiments, conventional imaging components are placed on a platform having wheels, thereby providing a mechanism for imaging a moving subject. In other embodiments, conventional imaging components are situated on non-parallel rails, and moved along those rails, thereby providing a mechanism for imaging an anatomical region of a subject as that region moves in two dimensions. For yet other embodiments, image recognition and tracking approaches are provided to track the movement of a non-stationary anatomical region. The tracking of the non-stationary anatomical region permits imaging of a moving anatomy. For some embodiments, the anatomy moves within its normal range of motion.

Abstract: The invention relates to a medical x-ray imaging apparatus including a support structure (1) which supports a substantially ring-shaped structure, an O-arm (2) supporting imaging means (21, 22), to which O-arm (2) is arranged an examination opening (4). The ring-shaped structure (2) supporting the imaging means is arranged movable with respect to said support construction (1) at least in vertical direction. A patient stool (30) is arranged to be positioned in connection with the apparatus, as well as positioning means (32, 33, 34) in connection with said examination opening (4) for positioning the patient stool (30) in the examination opening (4).

Abstract: A medical device includes a moving gantry, on which a radiation source is arranged, and a collision-protection apparatus for preventing a patient from colliding with the moving gantry. The gantry is operable to be moved around a patient-positioning apparatus. The collision-protection apparatus can be configured as a mechanical collision-protection apparatus that is operable to be positioned between the patient and the moving gantry. The collision-protection apparatus can also be configured as a collision-monitoring apparatus that detects the crossing of a predefined volume by an object, the collision-monitoring apparatus having a control apparatus that controls the motion of the gantry as a function of whether a crossing of the volume has or has not been detected.

Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.

Abstract: The present invention provides a method for estimation of retrospective and real-time 3D target position by a single imager. The invention includes imaging a target on at least one 2D plane to determine 2D position and/or position components of the target, and resolving a position and/or position component along at least one imager axis of the target using a spatial probability density. The present invention provides a probability-based method for accurate estimation of the mean position, motion magnitude, motion correlation, and trajectory of a tumor from CBCT projections. The applicability of the method for tumors with periodic respiratory motion and for prostate are provided. Clinical feasibility is demonstrated for a pancreas tumor. The method includes monoscopic tracking of the 3D prostate position utilizing the spatial probability density to estimate the unresolved motion from the resolved motion. The method is applicable to prostate tracking even with a population-based probability density.

Abstract: This invention relates generally to treatment of solid cancers. More particularly, the invention relates to a computer controlled patient positioning, immobilization, and repositioning method and apparatus used in conjunction with multi-field charged particle cancer therapy coordinated with patient respiration patterns and further in combination with charged particle beam injection, acceleration, extraction, and/or targeting methods and apparatus.

Abstract: A radiotherapy couch top includes a cantilevered section adapted to support at least a portion of a prone patient's upper body. The cantilevered section may be provided with an opening configured to allow at least a portion of the body portion to extend into from above and to allow a radiation beam to pass through from below.

Abstract: An X-ray treatment apparatus comprises a low energy X-ray generator for detecting a marker, a marker sensor detecting a position of the marker fixed in the patient to a couch, and both low energy X-ray generator and the marker sensor are installed in the couch, a high energy X-ray generator for treatment, a X-ray sensor for treatment detecting the high energy X-ray for treatment. An X-ray treatment method using the X-ray treatment apparatus comprises the steps of detecting a position of a marker by the marker sensor, irradiating to a lesion the high energy X-ray for treatment, detecting the penetrated high energy X-ray for treatment by the X-ray sensor for treatment, modifying the beam profile, the dosage or/and the radiation direction of the X-ray for treatment according to the latest data of the sensors, performing the next radiation for the lesion.

Abstract: The present invention relates to an apparatus (10) for generating countable pulses (30) from impinging X-ray (12, 14) in an imaging device (16), in particular in a computer tomograph, the apparatus (10) comprising a pre-amplifying element (18) adapted to convert a charge pulse (20) generated by an impinging photon (12, 14) into an electrical signal (22) and a shaping element (26) having a feedback loop (28) and adapted to convert the electrical signal (22) into an electrical pulse (30), wherein a delay circuit (38) is connected to the feedback loop (28) such that a time during which the feedback loop (28) collects charges of the electrical signal (22) is extended in order to improve an amplitude of the electrical pulse (30) at an output (56) of the shaping element (26). The invention also relates to a corresponding imaging device (16) and a corresponding method.

Abstract: A CT scan device including a CT scanner and an auxiliary table is proposed. The CT scanner has a scanning area and a scanning table, with the scanning table able to shift straight and pass through the scanning area. The auxiliary table is arranged on a side of the CT scanner opposite to another side where the scanning table is disposed, with the auxiliary table having an extension portion and a body, wherein a connection end of the extension portion connects with the body, an abutting end of the extension portion abutting against the scanning table, the extension portion has an inclined surface raised from the connection end to the abutting end, and the scanning table is able to push the auxiliary table moving relatively to the scanning area.