Toshiba Medical Systems Corporation

Canon Medical Systems Corporation

Kabushiki Kaisha Toshiba

Kenta Moriyasu

Takashi Ida

Hidenori Takeshima

Taichiro Shiodera

Toshiyuki Ono

Hiroaki Nakai

Tomoyuki Takeguchi

Shuhei Nitta

Takuzo Takayama

Shinsuke Tsukagoshi

Kazumasa Arakita

Manabu Teshigawara

Tatsuo Maeda

Nobutoku Motomura

Takumi Hara

Jun Moteki

A PET apparatus according to one embodiment includes processing circuitry. The processing circuitry acquires list mode data. The processing circuitry reconstructs a PET image based on the list mode data. The processing circuitry identifies first coincidence data that is obtained by coincidence counting by a first detector and a second detector that is different from the first detector from among a plurality of pieces of coincidence data included in the list mode data. The processing circuitry estimates a time lag amount between the first detector and the second detector based on TOF information included in the first coincidence data and the PET image.

Pet apparatus, method, and storage medium

A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain Time-of-Flight (TOF) depiction image data generated on the basis of an annihilation point of a gamma ray. The processing circuitry is configured to output reconstructed Positron Emission computed Tomography (PET) image data on the basis of the TOF depiction image data and a trained model that outputs the reconstructed PET image data on the basis of an input of the TOF depiction image data.

Medical image processing apparatus, and nuclear medicine diagnosis apparatus

A photon counting X-ray CT apparatus according to an embodiment includes: data acquiring circuitry, and processing circuitry. The data acquiring circuitry is configured to allocate energy measured by signals output from a photon counting detector in response to incidence of X-ray photons to any of a plurality of first energy bins so as to acquire a first data group as count data of each of the first energy bins. The processing circuitry is configured to determine a plurality of second energy bins obtained by grouping the first energy bins in accordance with a decomposition target material that is a material to be decomposed in a imaging region, allocate the first data group to any of the second energy bins so as to generate a second data group, and use the second data group to generate an image representing a distribution of the decomposition target material.

Photon counting X-ray CT apparatus

According to one embodiment, a medical information processing apparatus includes processing circuitry. The processing circuitry is configured to acquire information on an accuracy of a trained model that outputs information on a lesion included in data related to a medical image based on inputted data related to the medical image. Further, the processing circuitry is configured to determine a data collection condition for the medical image in a medical image diagnostic apparatus based on the information on the accuracy.

Medical information processing apparatus

According to one embodiment, medical image diagnostic apparatus includes a bed, a display, and processing circuitry. The bed movably supports a top plate. The display displays a setting window for setting an acquisition time of PET event data for each acquisition area. The processing circuitry sets an acquisition time for each acquisition area in response to a setting instruction of the acquisition time for each acquisition area. The acquisition area includes a unit acquisition area or a plurality of unit acquisition areas which overlap with each other with variable overlap ratio. The unit acquisition area corresponds to a coverage of a gamma ray detector. The processing circuitry adjusts the overlap ratio of at least one of two neighboring acquisition areas so that the boundary of the neighboring acquisition areas is set to a position designated by a user.

Medical image diagnostic apparatus

A photon-counting X-ray CT apparatus in an embodiment includes an X-ray tube, an X-ray detector, correction circuitry, and processing circuitry. The X-ray tube is configured to irradiate a subject with X-rays. The X-ray detector is configured to include an X-ray detection element that detects photons of the X-rays that the X-ray tube emits. The correction circuitry is configured to correct a count value observed by the X-ray detection element in each of a plurality of energy bins, based on at least one of the probability of escape in the X-ray detection element and the probability of crosstalk in the X-ray detection element. The processing circuitry is configured to generate a reconstruction image, based on the count values corrected by the correction circuitry.

Photon-counting X-ray CT apparatus and photon-counting imaging method

An image processing system according to an embodiment is an image processing system having a terminal device including a display unit that displays a medical image. The image processing system includes an acquiring unit and a display controller. The acquiring unit acquires a position of the terminal device relative to a predetermined target. The display controller causes the display unit to display a medical image in accordance with the relative position of the terminal device relative to the target acquired by the acquiring unit.

Image processing system, terminal device, and image processing method

A positron emission computed tomography apparatus according to an embodiment includes a detector, a buffer, and a regulating unit. The detector detects annihilation radiation. The buffer stores therein event data generated based on an output signal from the detector. The regulating unit regulates the amount of the event data read from the buffer during a high count rate period of the events at which the annihilation radiation is detected.

Positron emission computed tomography apparatus

According to one embodiment, a nuclear medicine imaging apparatus includes a detector, a calibrator, and an image reconstruction unit. The detector includes a plurality of detector modules, each counting light originating from a gamma ray. The calibrator unit calibrates time information of all of the plurality of detector modules by calibrating time information for determining each detection time of a pair of detector modules based on each detection time of the pair of the detector modules which approximately coincidentally count annihilation gamma rays and a distance between the pair of detector modules in a state in which a point radiation source including a positron emitting nuclide is installed in each position near a plurality of predetermined detector modules. The image reconstruction unit reconstructs a nuclear medicine image using a time difference between detection times of annihilation gamma rays corrected based on time information calibrated by the calibrator.

Nuclear medicine imaging apparatus, and nuclear medicine imaging method

A CT apparatus includes: a tube that produces an X-ray photon whose highest energy is higher than highest peak energy of characteristic X-rays; a detecting material; a unit that produces a first attenuation coefficient map which corresponds to a first energy region including the highest peak energy of the characteristic X-rays; a unit that transforms the first attenuation coefficient map into a second attenuation coefficient map of a second energy region; a unit that produces a scattered photon distribution of scattered X-ray photons on the basis of the second attenuation coefficient map; and a unit that produces data before reconstruction on the basis of the detected X-ray photon which corresponds to the second energy region, corrects and processes the data before reconstruction with the scattered photon distribution so as to produce corrected data, and reconstructs an image corresponding to the second energy region for which scattered radiation is corrected.

Photon counting type X-ray computed tomography apparatus and method for correcting scattered radiation

According to one embodiment, a radiation diagnostic apparatus includes a photon-counting detector, a counting information storage unit, an image reconstituting unit, and a controlling unit. The detector performs counting on light derived from incident radiation. The counting information storage unit stores therein counting information based on the counting result of the detector. The image reconstituting unit reconstitutes a medical image by performing a back projection process on projection data that is generated by use of the counting information stored in the counting information storage unit. After the reconstitution of the medical image, the controlling unit performs control so that all or part of the counting information is maintained in the counting information storage unit.

Radiation diagnostic apparatus and image reconstructing method

According to one embodiment, a TOF-PET apparatus includes a plurality of detector rings arranged along a central axis thereof. Each of the detector rings comprises a plurality of scintillators and a plurality of photomultipliers. The scintillators are arranged on a substantial circumference around the central axis and generate scintillation in response to pair annihilation gamma-rays from a subject. The photomultipliers generate an electric signal in accordance with the generated scintillation. A length of each of the scintillators along a radial direction of the substantial circumference is set to a range in which a value of a total number of counts/time resolution of coincidence events of pair annihilation gamma-rays is more improved than when a reference scintillator whose probability of interaction with pair annihilation gamma-rays is adjusted to 80% is used under conditions of a constant total volume of the scintillators.

Growing community of inventors

Nasushiobara, Japan

Kenta Moriyasu