摘要:
An X-ray diagnostic apparatus includes an X-ray generating unit which generates X rays, an X-ray detecting unit which detects X rays transmitted through a subject, an X-ray exposure operating unit which is operated by an operator, and a system control unit which controls the X-ray generating unit in order to start the generation of the X rays from the X-ray generating unit at a time point when a heart rate phase of the subject reaches a specified phase after the X-ray exposure operating unit is operated.
摘要:
[Task] In a power conversion system, a variation in PCS alternating current voltage is suppressed during a change operation to a self-contained run according to an instantaneous voltage drop-service interruption.[Means for solving the task] During an ordinary system voltage stabilization, with change switch 25 changed to the output side of APR control circuit 22 and change switch 400 changed to the output side of charge/discharge run PWM command value preparing section 200, the power conversion system is run in a charge/discharge run mode. If the instantaneous voltage drop or the service interruption occurs, change switch 25 is changed to the output side of the self-contained run change prior current command value preparing section 60 and the constant current discharge run is carried out in which the electric power is discharged for a predetermined time duration in response to the current command value of the self-contained run change prior current command value preparing section 60. Thus, after a predetermined time has elapsed, change switch 400 is changed to the output side of the self-contained run PWM command value preparing section 30 to perform the self-contained run. At this time, the variation in PCS alternating current voltage in the power conversion system is suppressed.
摘要:
A 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.
摘要:
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.
摘要:
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 image data, and creates third three-dimensional image data, and a processing unit that performs subtraction between the second three-dimensional image data and the third three-dimensional data and creates fourth three-dimensional image data.
摘要:
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.
摘要:
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.
摘要:
According to one embodiment, a medical image diagnosis apparatus includes a volume rendering image generation part, mask image-storage, real time fluoroscopic image generation part, subtraction image generation part, coil image generation part, and image composition part. The volume rendering image generation part generates, from volume data, a volume rendering image representing blood vessel information. The mask image-storage stores fluoroscopic mask images. The real time fluoroscopic image generation part acquires real time fluoroscopic images for each chronological sequence accompanying device insertion. The subtraction image generation part generates a subtraction image by subtraction processing on the fluoroscopic mask image stored in the mask image storage and the real time fluoroscopic image acquired for each chronological sequence. The coil image generation part generates a coil image from the fluoroscopic mask image. The image composition part generates a composite image of the volume rendering image, the subtraction image, and the coil image.
摘要:
According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, first detector, second detector, arm, sliding mechanism, tilting mechanism, and control unit. The X-ray tube includes an anode to generate X-rays upon receiving electrons. The first detector has the first pixel size. The second detector has the second pixel size smaller than the first pixel size. The arm pivotally supports the X-ray tube, first detector, and second detector. The sliding mechanism slidably supports the first and second detectors so as to irradiate one of the first and second detectors with the X-rays generated by the X-ray tube. The tilting mechanism tiltably supports the X-ray tube to change the size of an effective X-ray focal spot on the anode. The control unit controls the sliding of the first and second detectors by the sliding mechanism upon interlocking with the tilting of the X-ray tube by the tilting mechanism.
摘要:
An embodiment of the present invention provides a medical apparatus which displays an image of an object collected by using a first radiography system and a second radiography system, including: an image processing unit adapted to acquire a three-dimensional image; a projection direction input unit used to input a projection direction for at least one of the first radiography system and the second radiography system using the three-dimensional image; an imaging direction setting unit adapted to set an imaging direction for at least one of the first radiography system and the second radiography system based on the projection direction; and an interference checking unit adapted to determine whether interference between the first radiography system and the second radiography system will occur if one of the first radiography system and the second radiography system corresponding to the set imaging direction is moved.