Abstract: An X-ray diagnostic apparatus includes an X-ray tube, an X-ray detector, a support mechanism which movably supports the X-ray tube and the X-ray detector, a storage unit which stores data of a three-dimensional model associated with a standard blood vessel structure, and a control unit which controls the support mechanism on the basis of the three-dimensional model so as to make an imaging central line between the X-ray tube and the X-ray detector become substantially orthogonal to a blood vessel axis of the three-dimensional model at a designated position.

Abstract: A 3D-image processing apparatus includes a storage unit which stores data of a first 3D image together with data of a second 3D image as a combining target with the first 3D image and data of a third 3D image relevant to the second 3D image, a misregistration calculating unit which calculates a misregistration between the first 3D image and the third 3D image, and an image combining unit which registers and combines the second 3D image with the first 3D image on the basis of the calculated misregistration.

Abstract: An X-ray generation unit and an X-ray detection unit are controlled by an imaging control unit when two-dimensional images of a sample without a contrast and two-dimensional images of a sample with a contrast are imaged, so as to set imaging angles of these two-dimensional images to be different from each other, and a three-dimensional image of the sample is acquired by an image calculation unit on the basis a plurality of two-dimensional images without a contrast and a plurality of two-dimensional images with a contrast which are acquired under the control of the X-ray generation unit and the X-ray detection unit.

Abstract: An X-ray diagnostic apparatus includes an X-ray imaging unit including an X-ray tube and an X-ray detecting unit to generate an X-ray image, an image generating unit generating a 3D non-blood vessel image and a 3D blood vessel image from an original 3D image generated by the X-ray diagnostic apparatus or an X-ray CT apparatus, a projection image generating unit generating a non-blood vessel projection image from the 3D non-blood vessel image and generating a blood vessel projection image from the 3D blood vessel image, a positional shift identifying unit identifying a positional shift between the X-ray image and the non-blood vessel projection image, a correcting unit correcting a positional shift of the blood vessel projection image on the basis of the positional shift, and a display unit which displays the X-ray image and the corrected blood vessel projection image.

Abstract: An image diagnostic apparatus includes a radiography unit which generates a mask image and contrast images before and after the injection of a contrast medium, an image memory which stores the mask image and the contrast images, an ROI identifying unit which sets a region of interest from the mask image and the contrast images, a pixel shift amount detecting unit which detects a pixel shift amount between the mask and the contrast image upon localization to the region of interest, and a processing unit which shifts at least the mask image or the contrast image in accordance with the detected pixel shift amount and performs subtraction between the images.

Abstract: An X-ray diagnostic apparatus includes an image generating unit which generates a plurality of X-ray images by repeatedly radiographing a subject before and after injection of a contrast medium, a region detecting unit which detects a non-contrast region from a plurality of mask images before injection of the contrast medium and a plurality of contrast images after injection of the contrast medium, which constitute the plurality of X-ray images, a mask selecting unit which separately selects one mask image with respect to each of the contrast images on the basis of a correlation between the contrast image and the mask image upon localization to the non-contrast region, and a subtraction processing unit which generates a subtraction image by performing subtraction between the contrast image and the selected mask image.

Abstract: An X-ray angiography apparatus includes a C-arm, a support mechanism which rotatably supports the C-arm, a rotation driving unit which drives rotation of the C-arm, an X-ray tube mounted on the C-arm, an X-ray detector mounted on the C-arm in a direction to face the X-ray tube, and a rotation control unit which controls the X-ray detector and the rotation driving unit to make the angle sampling pitch of contrast images become larger than that of mask images.

Abstract: A 3D-image processing apparatus comprising a first acquisition device, a second acquisition device, and a computing unit. The first acquisition device acquires displacement information about first 3D-imaging data and second 3D-imaging data different from the first 3D-imaging data. The first 3D-imaging data represents one of three-dimensional images different in diagnostic mode regarding a subject. The second acquisition device acquires displacement information about the second 3D-imaging data and a third 3D-imaging data different from the first and second 3D-imaging data. The computing unit obtains displacement information about the first 3D-imaging data and the third 3D-imaging data, from the displacement information acquired by the first and second acquisition devices.

Abstract: Projection data are obtained by using a method for imaging by rotating the first imaging system having an X-ray generating unit 1a and the second imaging system having an X-ray generating unit 1b. The obtained projection data are subjected to a reconstruction process to generate X-ray image data. In this case, a relative angle ?0 formed between the imaging systems is setup according to a palmic period T0 of a subject and a rotation velocity Vr of the imaging systems. Thus, the projection data from more directions at a predetermined palmic time-phase are collected without overlapping.

Abstract: An X-ray diagnostic apparatus includes an X-ray tube, an X-ray detector, a support mechanism which movably supports the X-ray tube and the X-ray detector, a storage unit which stores data of a three-dimensional model associated with a standard blood vessel structure, and a control unit which controls the support mechanism on the basis of the three-dimensional model so as to make an imaging central line between the X-ray tube and the X-ray detector become substantially orthogonal to a blood vessel axis of the three-dimensional model at a designated position.

Abstract: A contrast medium injection management apparatus includes a measuring unit which repeatedly measures the injection amount of contrast medium injected from at least one contrast medium injection device into a subject to be examined, a cumulative injection amount calculating unit which repeatedly calculates a cumulative injection amount at the start of examination or after an arbitrary point of time from the injection amount, and a display unit which displays the cumulative injection amount.

Abstract: A three-dimensional image processing apparatus includes a storage unit that stores data of a plurality of mask images and data of a plurality of contrast images, each of the plurality of mask images being obtained by radiographing a subject to be examined in a different direction before contrast medium injection, each of the plurality of contrast images being obtained by radiographing the subject to be examined in a different direction after the contrast medium injection, a reconstruction unit that reconstructs first three-dimensional image data from the plurality of mask image data and reconstructs second three-dimensional image data from the plurality of contrast image data, a positional deviation correcting unit that corrects positional deviation of the first three-dimensional image with respect to the second three-dimensional image on the basis of the comparison result between an anatomical structure of the first three-dimensional image data and an anatomical structure of the second three-dimensional imag

Abstract: In a storing unit of a medical image processing apparatus, first 3D image corresponding to a first period and second 3D image data corresponding to a second period are stored. The first 3D image data corresponds to a period before contrast agent injection operation and/or therapeutic operation. The second 3D image data corresponds to a period after the contrast agent injection operation and/or therapeutic operation. A 3D subtracting unit subtracts the first 3D image data from the second 3D image data. In 3D subtraction image data, a portion having undergone a change due to contrast agent injection operation and/or therapeutic operation is emphasized. A pseudo 3D image data generating unit generates pseudo 3D image data on the basis of 3D subtraction image data. A displaying unit displays the pseudo 3D image data.

Abstract: A CT device, an MRI device, an ultrasonic device, or an X-ray device for picturing a 3-D image are connected to a network. A 3-D image is stored in an image database via the network. A first image processing device or a second image processing device obtains a 3-D image from the respective devices via the network. The image processing device can display a plurality of 3-D images concurrently with conditions made uniform with regard to direction of observation, enlargement ratio, scale, etc. Also, the device can display a combined image obtained by combining a plurality of 3-D images. The combined image can be displayed so that overlapping areas and non-overlapping areas are in different colors. In addition, the device can display medical information of use for a diagnosis or an examination together with the plurality of 3-D images displayed with conditions made uniform.

Abstract: Projection data are obtained by using a method for imaging by rotating the first imaging system having an X-ray generating unit 1a and the second imaging system having an X-ray generating unit 1b. The obtained projection data are subjected to a reconstruction process to generate X-ray image data. In this case, a relative angle ?0 formed between the imaging systems is setup according to a palmic period T0 of a subject and a rotation velocity Vr of the imaging systems. Thus, the projection data from more directions at a predetermined palmic time-phase are collected without overlapping.

Abstract: A 3D image processing apparatus comprises a storing unit storing mask images corresponding to projection directions associated with a subject contrast images corresponding to the projection directions, a subtracting unit generating subtraction images by subtracting the mask images from the contrast images, a reconstruction unit reconstructing first volume data from the mask images and reconstructs second volume data from the subtraction images, an image processing unit generating a first 3D image representing a bone structure and/or a soft tissue structure from the first volume data, and generates a second 3D image representing a contrasted blood vessel from the second volume data, an image synthesizing unit generating a synthetic image by synthesizing the first 3D image with the second 3D image, and a displaying unit displaying the synthetic image.

Abstract: An examination program is selected based on an input of an examination method or a region to be inspected on the side of an diagnostic X-ray system, and contrast conditions suitable for contrast examination which is realized by the selected examination protocol are transmitted to a contrast medium injector through a network or the like. The contrast medium injector receives the transmitted contrast conditions and performs control regarding contrast medium dosage based on the contrast conditions.

Abstract: An image processing apparatus is provided for processing a plurality of sets of projection data acquired by radiating an X-ray onto an object in a multitude of directions. The apparatus has a correcting unit and a reconstructing unit. The correcting unit corrects the projection data with regard to beam hardening of the projection data. The beam hardening is caused due to a contrast agent injected into the object. For example, the correcting unit includes a correction table defining a correcting value to a change in densities of a region in which the contrast agent is present and corrects the projection data on the basis of the correcting value obtained from the correction table. The reconstructing unit reconstructs the corrected projection data into an image of the object. Thus, artifacts due to beam hardening resultant from use of the contrast agent can be avoided.

Abstract: An X-ray diagnosis apparatus includes an X-ray tube, an imaging system which detects X-rays emitted from the X-ray tube and transmitted through an object to be examined and generates X-ray image data, an arm which supports the X-ray tube and the imaging system, an arm support mechanism which rotatably and movably supports the arm, and a bed which holds the object between the X-ray tube and the imaging system. This X-ray diagnosis apparatus further includes a three-dimensional image generating unit which generates three-dimensional image data from volume data concerning the object, a display unit which displays the three-dimensional image data, an input device which designates an interest point on the displayed three-dimensional image data, and a controller which controls at least one of the arm support mechanism and the bed, such that the center of the X-ray image data generated by the imaging system is positioned on a portion of the object which substantially corresponds to the designated interest point.

Abstract: In a storing unit of a medical image processing apparatus, first 3D image corresponding to a first period and second 3D image data corresponding to a second period are stored. The first 3D image data corresponds to a period before contrast agent injection operation and/or therapeutic operation. The second 3D image data corresponds to a period after the contrast agent injection operation and/or therapeutic operation. A 3D subtracting unit subtracts the first 3D image data from the second 3D image data. In 3D subtraction image data, a portion having undergone a change due to contrast agent injection operation and/or therapeutic operation is emphasized. A pseudo 3D image data generating unit generates pseudo 3D image data on the basis of 3D subtraction image data. A displaying unit displays the pseudo 3D image data.