The disclosure relates to PET imaging systems and methods. The systems may execute the methods to obtain an anatomical image of a subject acquired when the subject remains in a breath-hold status; obtain PET data of the subject, the PET data corresponding to a respiration signal with a plurality of respiratory phases of the subject, the respiratory phases including a first respiratory phase and a second respiratory phase; gate the PET data; reconstruct a plurality of gated PET images, the plurality of gated PET images including a first gated PET image corresponding to the first respiratory phase and a second gated PET image corresponding to the second respiratory phase; determine a first motion vector field between the first gated PET image and the second gated PET image; determine a second motion vector field between the anatomical image and the second gated PET image; and reconstruct an attenuation corrected PET image.

The radiation imaging apparatus according to the present invention is a radiation imaging apparatus arranged to detect radiation and receive power in a non-contact manner, the radiation imaging apparatus including a control unit configured to stop at least one of the non-contact power reception of and the non-contact power supply to the radiation imaging apparatus depending on the state of the radiation imaging apparatus.

The invention consists of an apparatus and method for first level detection of tumour masses, pleural effusions and cysts, using time-of-flight reflectometry and dielectric spectroscopy, with the advantage of speeding up the diagnosis of these pathologies compared to the use of Computerized Tomography (CT) and/or Nuclear Magnetic Resonance (NMR).

Features of a medical condition can be automatically annotated in medical images using a classification model that has been trained to classify images as having the medical condition or not. The automatically annotated features may be further processed to generate a treatment plan for treating the medical condition, for example with a laser, ultrasound, or other treatment method.

A radiation imaging apparatus includes a pixel array having a plurality of pixels configured to detect radiation, and a controller configured to obtain a radiation generation condition related to a radiation generating apparatus during fluoroscopic imaging, and determine, during the fluoroscopic imaging, timings of a plurality of sampling and holding operations in each of the plurality of pixels in accordance with the radiation generation condition. The timing of at least one sampling and holding operation is a timing in an irradiation period of radiation, and each of the plurality of pixels includes a conversion element configured to convert radiation into an electrical signal, and a sample and hold circuit configured to sample and hold signals from the conversion element multiple times in accordance with the timings, determined by the controller, of the plurality of sampling and holding operations.

The investigated object containing a source of positrons is placed into a system of n position and energy-sensitive gamma radiation detectors (D.sub.i), each having detection elements (D.sub.ijk), where one of a pair of annihilation photons interacts in the detection element (D.sub.1jk) and the other interacts in another detection element (D.sub.2jk). The detectors store the coordinates of simultaneously affected detector elements, the time of interactions and the energies E.sub.1 and E.sub.2 of the annihilation photons. The recorded events in the detection elements (D.sub.1jk) and (D.sub.2jk) leads to recognition of individual pairs of annihilation photons. An analysis is performed of the registration of the photons by the detection elements (D.sub.1jk) and (D.sub.2jk) with energies in the interval from 507 keV to 513 keV to obtain an approximate spatial depiction of positions of positron annihilation and, registration of the photons from the positron annihilation with significantly Doppler shifted energies outside of that interval.

By a technique different from conventional techniques, quality of an image obtained by nuclear medicine imaging is improved. In an image processing device, a first reconstruction process section generates, by a reconstruction process with respect to list mode data acquired by a PET device, an initial image indicating a concentration distribution of a radioactive substance. A scatter component derivation section derives, from the initial image, scatter component projection data indicating a scatter component of radiation rays by scatter estimation simulation. A second reconstruction process section generates, by a reconstruction process with respect to the scatter component projection data, a low resolution scatter image indicating the scatter component and having a resolution lower than that of the initial image. An upscaling process section generates an upscaled scatter image having a resolution identical with that of the initial image by upscaling the low resolution scatter image.

A radiographic imaging apparatus includes, in an image capturing region in which multiple pixels for obtaining radiological image data are arranged in rows and columns, a pixel array including a detection pixel group of a plurality of detection pixels for detecting the radiation dose, a control unit configured to control the image capturing, an image capturing unit configured to capture an image taken with the control unit, and an image-capturing-termination determination unit configured to terminate the image capturing at the image capturing unit based on the radiation dose information from the detection pixel group.

A radiation imaging system includes a radiation imaging apparatus configured to generate a radiation image based on radiation emitted from a radiation generation apparatus, and a control apparatus configured to acquire information from the radiation imaging apparatus and the radiation generation apparatus. The control apparatus includes an image determination unit configured to determine whether the radiation image acquired from the radiation imaging apparatus is a failed image, an irradiation information acquisition unit configured to acquire irradiation information from the radiation generation apparatus, and a factor determination unit configured to determine a factor in acquisition of the failed image, based on a determination result of the image determination unit and information in the irradiation information acquisition unit.

The disclosure relates to PET imaging systems and methods. The systems may execute the methods to obtain an anatomical image of a subject acquired when the subject remains in a breath-hold status; obtain PET data of the subject, the PET data corresponding to a respiration signal with a plurality of respiratory phases of the subject, the respiratory phases including a first respiratory phase and a second respiratory phase; gate the PET data; reconstruct a plurality of gated PET images, the plurality of gated PET images including a first gated PET image corresponding to the first respiratory phase and a second gated PET image corresponding to the second respiratory phase; determine a first motion vector field between the first gated PET image and the second gated PET image; determine a second motion vector field between the anatomical image and the second gated PET image; and reconstruct an attenuation corrected PET image.