Toshiba Medical Systems Corporation

Kabushiki Kaisha Toshiba

Canon Medical Systems Corporation

Yasunobu Yamada

Katsuhito Morino

Tomoyasu Komori

Masakazu Matsuura

Hisashi Yasuda

Takuzo Takayama

Nobutoku Motomura

Takahiro Yoda

Masao Yamahana

Shinya Kawanabe

Yojiro Suzuki

Naoki Yamashita

Ryosuke Higashi

The disclosure relates to an X-ray computed tomography apparatus that includes an X-ray tube, an X-ray detector, preprocessing circuitry, a reconstruction processor, and control circuitry. The X-ray detector is configured to detect X-rays generated from the X-ray tube. The preprocessing circuitry is configured to generate projection data by executing preprocessing for data acquired by the X-ray detector based on a preprocessing condition. The reconstruction processor is configured to generate image data by executing reconstruction processing for the projection data based on a reconstruction condition. The control circuitry is configured to cause a storage to store the projection data in association with the preprocessing condition, and to read out the projection data based on a designated preprocessing condition.

X-ray computed tomography apparatus and image processing apparatus

An X-ray CT apparatus according to an embodiment includes a processing circuitry configured to acquire scan region and a first scan range, and change, while the scan region is being scanned, the first scan range to a second scan range based on projection data of the scan region acquired by the scan.

X-ray CT apparatus

According to one embodiment, a medical imaging diagnosis apparatus includes a top-plate, a bed, a first gantry, a second gantry and a moving assembly. The top-plate places a subject thereon. The bed supports the top-plate. The first gantry includes an X-ray generator and an X-ray detector which revolve around the top-plate. The second gantry includes a gamma ray detector which detects gamma rays emitted from the subject. The moving assembly moves, based on a first position indicative of a center position of an effective view field in the first gantry and a second position indicative of a center position of an effective view field in the second gantry, the top-plate relative to the second position.

Medical imaging diagnosis apparatus, nuclear medicine diagnosis apparatus, X-ray CT apparatus, and bed apparatus

A medical imaging apparatus includes a reconstruction unit, a ROI setting unit, and a controller. The reconstruction unit receives projection data that is based on radiation detected by a detector, divides the projection data into a plurality of subsets, and apply a reconstruction process to the subsets by successive approximation to successively generate images. The ROI setting unit sets a ROI in the images. The controller obtains a variation value indicating a change in image quality from the images, and, when the variation value reaches a predetermined value, instructs the reconstruction unit on a new subset count less than the number of the subsets to sequentially reconstruct subsets as many as the new subset count into an image. The reconstruction unit assigns a weight to the projection data based on the ROI, and divides the projection data into the subsets based on the weight.

Medical imaging apparatus

The CT image processor determines the position of the liver in the body of a subject based on CT image. The PET image processor determines the position of the liver in the body of a subject based on PET image. The CT image processor calculates the displacement in the positions of the liver determined by the CT and PET images. The CT image processor extracts the contour of the liver from a CT image. The CT image processor generates a correction CT image by modifying a CT image by moving a CT image to decrease the displacement of the extracted contour in the internal area. The PET image processor performs decrease correction based on the modified CT image.

Medical diagnostic imaging apparatus and image correction method

A medical imaging apparatus includes an X-ray imaging apparatus; and a nuclear medicine imaging apparatus. The X-ray imaging apparatus includes an X-ray tube configured to emit X-rays for generating an X-ray CT image. The nuclear medicine imaging apparatus includes a detector configured to detect radiation for generating a nuclear medicine image. At least one of the X-ray imaging apparatus and the nuclear medicine imaging apparatus includes a determining unit configured to determine whether the detector detects the X-rays emitted by the X-ray tube, thereby determining whether there is a failure in the detector.

Medical imaging apparatus, control method, and computer program product

A nuclear medicine imaging apparatus according to an embodiment of the invention includes a detector, a measuring unit, and an end control unit. The detector is configured to detect radiation for generating a nuclear medicine image. The measuring unit is configured to measure the number of times the detector detects the radiation. The end control unit is configured to control the detector to end the detection operation when the number of times measured by the measuring unit is equal to or less than a threshold value.

Growing community of inventors

Nasushiobara, Japan

Yasunobu Yamada