Abstract: A chemical liquid injector including a driving mechanism which applies a pressure to a chemical liquid in a container and pushes out the chemical liquid, and an injection control unit for setting operating conditions of the driving mechanism. The control unit has a main-injection condition determination section which determines injection conditions for a main injection, and an injection preliminary operation condition determination section which determines injection conditions for an injection preliminary operation, and is configured to execute the injection preliminary operation and the main injection consecutively in this order when injecting chemical liquid.

Abstract: A chemical-liquid injection head including a syringe holding unit which holds a syringe in which a piston member is slidably inserted into a cylinder member having a circular cylindrical shape, a piston driving mechanism having a ram member for moving the piston member of the syringe, and a first light emitting portion which emits light with a first color and illuminates the syringe and a second light emitting portion which emits light with a second color and illuminates the syringe. The first light emitting portion and the second light emitting portion, viewed in a posture at the time of use of the injection head, are provided at an upper side of the ram member.

Abstract: The injection apparatus 100 is provided that can allow repair or replacement of an actuator 130 while maintaining a drip-proof state, and that can further maintain the drip-proof state without a cover. The injection apparatus 100 includes a syringe holder 110 on which a syringe filled with a liquid medicine is mounted, a presser 115 that pushes out the liquid medicine from the mounted syringe, an actuator 130 that moves the presser 115 forward or backward, the actuator 130 including a feed screw nut 134, a feed screw shaft 133, a motor 132, and a transmission mechanism 180 that transmits rotation from the motor 132 to the feed screw shaft 133, wherein the feed screw nut 134, the feed screw shaft 133, the motor 132, and the transmission mechanism 180 are housed in a case 170 of the actuator 130.

Abstract: A chemical-liquid injection head including a syringe holding unit which holds a syringe in which a piston member is slidably inserted into a cylinder member having a circular cylindrical shape, a piston driving mechanism having a ram member for moving the piston member of the syringe, and a first light emitting portion which emits light with a first color and illuminates the syringe and a second light emitting portion which emits light with a second color and illuminates the syringe. The first light emitting portion and the second light emitting portion, viewed in a posture at the time of use of the injection head, are provided at an upper side of the ram member.

Abstract: An injection system has: an injection device that injects a drug solution; and a sound detection device that detects sound while a subject is being imaged and generates first data based on the sound, wherein the injection device has a data generation unit that acquires the first data, and a history generation unit that generates injection history data of the drug solution, and the data generation unit generates second data in which the first data is associated with time data in common with the injection history data.

Abstract: The simulator includes a chemical liquid information acquisition section configured to acquire an amount of contrast medium, a target value acquisition section configured to acquire a target duration for which a target pixel value is maintained, a protocol acquisition section configured to acquire a contrast medium injection protocol, and a prediction section for determining a predicted duration, the prediction section configured to simulate the time-dependent change in the pixel value in the tissue of the subject based on the injection protocol and the amount of the contrast medium, and the prediction section compares the predicted duration with the target duration to re-simulate, in a case where the predicted duration is shorter than the target duration, the time-dependent change in a condition where a greater amount of the contrast medium than the amount of the contrast medium used in the simulation is injected to redetermine the predicted duration, and in a case where the predicted duration is longer than

Abstract: A blood vessel extraction apparatus including a convolutional neural network including a convolution unit which has a first path to which data for a first target region including some target voxels in medical volume data is input at a first resolution, and a second path to which data for a second target region including some target voxels in the medical volume data is input at a second resolution; and an output unit having a neural net structure which outputs numerical values related to visualization of the target voxels with an output result of the first path and the second path as input data.

Abstract: When imaging an imaging subject, a pixel value is maintained in a state of small fluctuation of the pixel value over an entire expected duration. A generation device includes: an imaging information acquiring unit acquiring information of an imaging site of an imaging subject; a subject information acquiring unit acquiring information of the imaging subject; and a protocol generation unit generating an injection protocol for a contrast medium based on the information of the imaging site and the information of the imaging subject, wherein the protocol generation unit generates the injection protocol including a first phase in which an injection rate decreases with a first acceleration, and a second phase which follows the first phase and in which the injection rate decreases with a second acceleration, and the injection rate at a start of the second phase is higher than the injection rate at an end of the first phase.

Abstract: A chemical-liquid injector includes a piston-driving mechanism (130) that moves a piston member of a syringe containing a contrast medium, which includes an actuator and a ram member which is moved back and forth by the actuator, a control circuit (150) which is electrically connected to the actuator, and an operating knob unit (170) which includes an operating knob that is to be operated by an operator, and a rotation sensor that outputs an electric signal corresponding to a rotation of the operating knob. The control circuit is configured to generate a predetermined control signal accordingly, on the basis of a signal from the rotation sensor, and the piston-driving mechanism is operated according to the control signal.

Abstract: A safe and easy handling of a chemical-liquid circuit having various components. The opening/closing unit drive mechanism includes an opening/closing unit holder which detachably holds an opening/closing unit which includes a housing having flow channels and a piston for opening and closing the flow channels which is movably provided to the housing, a hook to be engaged with the piston of the opening/closing unit, which is disposed leaving a space from the opening/closing unit holder, and a linear motion mechanism which moves the hook back and forth. The opening/closing unit holder is movably supported between a first position at which the piston is engaged with the hook and a second position at which the piston is not engaged with the hook.

Abstract: An injection system includes: a syringe having a cylinder to be filled with a chemical liquid, a flange projecting laterally from the cylinder, an end portion through which the chemical liquid passes when the chemical liquid is pushed out, and a syringe screw portion formed on a side opposite to the end portion; an adapter for holding the syringe, the adapter having a receiving portion for receiving the cylinder, a regulating wall for abutting the flange, and an adapter screw portion engaged with the syringe screw portion; and an injection device provided with a holder to which the adapter is to be attached. In this injection system, a tightening direction by the syringe screw portion and the adapter screw portion is set in a direction toward the end portion.

Abstract: In a chemical liquid injection conduit, there is a need to prevent a backflow of body fluid of a subject reaching the inside of a common conduit portion. This is solved by the chemical liquid injecting apparatus that includes: a common conduit portion that flows a chemical liquid from a chemical liquid injector to a replaceable conduit portion; a control device that controls the chemical liquid injector; and a flow blocking unit that is arranged inside the replaceable conduit or in a conduit of a boundary portion between the replaceable conduit and the common conduit portion, and by receiving a command from the control device, is switchable between an open state allowing a flow of the chemical liquid and a closed state blocking a flow of the chemical liquid.

Abstract: A chemical liquid injector including a driving mechanism which applies a pressure to a chemical liquid in a container and pushes out the chemical liquid, and an injection control unit for setting operating conditions of the driving mechanism. The control unit has a main-injection condition determination section which determines injection conditions for a main injection, and an injection preliminary operation condition determination section which determines injection conditions for an injection preliminary operation, and is configured to execute the injection preliminary operation and the main injection consecutively in this order when injecting chemical liquid.

Abstract: A pushing unit is stopped just before abutting against a rear end of a syringe to reliably prevent unwanted extrusion of a chemical liquid from a syringe. An injecting apparatus for injecting a chemical liquid includes: an injection head to which a syringe filled with the chemical liquid is to be mounted; a pushing unit provided on the injection head and pushing a rear end of the syringe; a rear end detection unit provided on the injection head and detecting the rear end in a contactless manner; and a control unit configured to control the injection head, the control unit acquiring a forward movement distance that the pushing unit is to be moved forward after the rear end is detected, and causing the pushing unit to move forward by the forward movement distance after the rear end is detected and to stop at a position separated from the rear end.

Abstract: A chemical-liquid injection head including a syringe holding unit which holds a syringe in which a piston member is slidably inserted into a cylinder member having a circular cylindrical shape, a piston driving mechanism having a ram member for moving the piston member of the syringe, and a first light emitting portion which emits light with a first color and illuminates the syringe and a second light emitting portion which emits light with a second color and illuminates the syringe. The first light emitting portion and the second light emitting portion, viewed in a posture at the time of use of the injection head, are provided at an upper side of the ram member.

Abstract: A blood vessel extraction apparatus including a convolutional neural network including a convolution unit which has a first path to which data for a first target region including some target voxels in medical volume data is input at a first resolution, and a second path to which data for a second target region including some target voxels in the medical volume data is input at a second resolution; and an output unit having a neural net structure which outputs numerical values related to visualization of the target voxels with an output result of the first path and the second path as input data.

Abstract: In order to achieve a prediction approximating an actual change with time of a pixel value in a tissue with higher accuracy, provided is a simulator, which is configured to predict a change with time of a pixel value in a tissue of an object, including: an object information acquisition unit configured to acquire information on the object; a protocol acquisition unit configured to acquire an injection protocol for a contrast medium; a tissue information acquisition unit configured to acquire information on the tissue; and a prediction unit configured to predict, based on the information on the object, the injection protocol, and the information on the tissue, a change with time of a pixel value of each of a plurality of compartments obtained by dividing the tissue along a blood flow direction.

Abstract: In order to achieve a prediction approximating an actual change with time of a pixel value in a tissue with higher accuracy, provided is a simulator, which is configured to predict a change with time of a pixel value in a tissue of an object, including: an object information acquisition unit configured to acquire information on the object; a protocol acquisition unit configured to acquire an injection protocol for a contrast medium; a tissue information acquisition unit configured to acquire information on the tissue; and a prediction unit configured to predict, based on the information on the object, the injection protocol, and the information on the tissue, a change with time of a pixel value of each of a plurality of compartments obtained by dividing the tissue along a blood flow direction.

Abstract: A chemical liquid injector that can easily set various injection conditions according to a region and an objective to be imaged. The chemical liquid injector includes two piston driving mechanisms for operating syringes filled with a first chemical liquid and a second chemical liquid, respectively, an input unit for receiving an input of a data, and an injection control unit for controlling an operation of the piston driving mechanisms. The injection control unit is set with a multistage injection mode in which injection operations are performed in a plurality of injection phases.

Abstract: The injection apparatus 100 is provided that can allow repair or replacement of an actuator 130 while maintaining a drip-proof state, and that can further maintain the drip-proof state without a cover. The injection apparatus 100 includes a syringe holder 110 on which a syringe filled with a liquid medicine is mounted, a presser 115 that pushes out the liquid medicine from the mounted syringe, an actuator 130 that moves the presser 115 forward or backward, the actuator 130 including a feed screw nut 134, a feed screw shaft 133, a motor 132, and a transmission mechanism 180 that transmits rotation from the motor 132 to the feed screw shaft 133, wherein the feed screw nut 134, the feed screw shaft 133, the motor 132, and the transmission mechanism 180 are housed in a case 170 of the actuator 130.