The method comprises receiving an image sequence of the subject from the camera during the medical imaging scan; receiving at least one of the current position or velocity of the patient table during the medical imaging scan; performing a motion tracking analysis of the image sequence to extract a motion model, wherein at least one of the motion tracking analysis or the motion model is tailored to the body region of interest and takes into account the at least one of the current patient table position or velocity; and analysing the motion model to detect subject motion and, if the detected motion is above a threshold, at least one of adapting the medical imaging examination or issuing an alert.

A positron emission tomography (PET) apparatus according to an embodiment includes a PET detector and processing circuitry. The PET detector includes a detector ring configured with a plurality of detector modules arranged in an annular shape. The processing circuitry is configured to acquire information regarding a scan mode of a PET scan for a subject. The processing circuitry is configured to control a relative position of the detector modules in an axial direction of the detector ring based on the information.

An X-ray imaging system using multiple pulsed X-ray sources to perform highly efficient and ultrafast 3D radiography is presented. There are multiple pulsed X-ray sources mounted on a structure in motion to form an array of sources. The multiple X-ray sources move simultaneously relative to an object on a pre-defined arc track at a constant speed as a group. Electron beam inside each individual X-ray tube is deflected by magnetic or electrical field to move focal spot a small distance. When focal spot of an X-ray tube beam has a speed that is equal to group speed but with opposite moving direction, the X-ray source and X-ray flat panel detector are activated through an external exposure control unit so that source tube stay momentarily standstill equivalently. 3D scan can cover much wider sweep angle in much shorter time and image analysis can also be done in real-time.

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

Disclosed herein is a method, comprising: introducing a tracer into a body region of an organism at an introduction site of the organism; causing emission of characteristic X-rays of the tracer in the body region; capturing images of the tracer in the body region with the characteristic X-rays; determining a first three-dimensional (3D) distribution of the tracer in the body region based on the images; and examining the first 3D distribution of the tracer in the body region to identify a sentinel lymph node for the introduction site. If the sentinel lymph node is not identified in the first 3D distribution, the method further comprises repeating said causing, said capturing, and said determining thereby resulting in a second 3D distribution of the tracer in the body region; and examining the second 3D distribution to identify the sentinel lymph node.

A computed tomography (CT) apparatus includes a gantry including a rotation device which has a ring shape and is rotatable about an axis of rotation, a plurality of light sources configured to emit X-rays to a subject, at least one detector provided on the rotation device and configured to detect X-rays passing through the subject, and one or more processors. The at least one processors are configured to rotate the rotation device in a first rotation direction by an angle of rotation determined based on a total number of the plurality of light sources, emit X-rays to the subject and detect X-rays passing through the subject during the rotation of the rotation device in the first rotation direction, and rotate the rotation device by the determined rotation angle in a second rotation direction.

A system and method for improved image acquisition of multiple pulsed X-ray source-in-motion tomosynthesis imaging apparatus by generating the electrocardiogram (ECG) waveform data using an ECG device. Once a representative cardiac cycle is determined, system will acquire images only at rest period of heart beat. Real time ECG waveform is used as ECG synchronization for image improvement. The imaging apparatus avoids ECG peak pulse for better chest, lung and breast imaging under influence of cardiac periodical motion. As a result, smoother data acquisition, much higher data quality can be achieved. The multiple pulsed X-ray source-in-motion tomosynthesis machine is with distributed multiple X-ray sources that is spanned at wide scan angle. At rest period of one heartbeat, multiple X-ray exposures are acquired from X-ray sources at different angles. The machine itself has capability to acquire as many as 60 actual projection images within about two seconds.

A hybrid medical apparatus having an imaging unit, an irradiation unit, and a patient support apparatus is provided. The imaging unit is configured to record image data of an examination region. The irradiation unit is configured to carry out an irradiation of at least a part of the examination region. The imaging unit and the irradiation unit have a common isocenter. The irradiation unit is arranged for rotational movement along a first perimeter independently of the imaging unit. An X-ray source and an X-ray detector of the imaging unit are arranged for movement such that a central beam between the X-ray source and the X-ray detector runs through the common isocenter. The patient support apparatus and/or the imaging unit and/or the irradiation unit is movable along a first spatial axis such that the examination region of the examination object is able to be arranged in the common isocenter.

A gamma-ray detector includes a plurality of modular one-dimensional arrays of monolithic detector sub-modules. Each monolithic detector sub-module includes a scintillator layer, a light-spreading layer, and a photodetector layer. The photodetector layer comprises a two-dimensional array of photodetectors that are arranged in columns and rows. A common printed circuit board is electrically coupled to the two-dimensional array of photodetectors of the plurality of modular one-dimensional arrays of monolithic detector sub-modules of a corresponding modular one-dimensional array. The two-dimensional array of photodetectors can be electrically coupled in a split-row configuration or in a checkerboard configuration. The two-dimensional array of photodetectors can also have a differential readout.

A PET imaging system, with parallel detector rings sharing a common axis (e.g., rings with one or more detector elements in the axial direction and two or more detector elements in the transaxial direction), may have an adaptive axial and/or transaxial FOV by employing a sparse detector configuration and adapting the size of axial gaps between rings and/or the size of transaxial gaps between detector elements in each ring. The axial FOV may be dynamic, enabling PET data acquisition in multiple modes (e.g., “retracted” with detector rings in a compact configuration, and “extended” with detector rings extended for longer axial FOV). The transaxial FOV may be dynamic, enabling an adaptive detector ring diameter for different body part contours. The sparse detector ring configurations may be used to extend the scanner axial and/or transaxial FOV, or retain the current system's FOV with half the number of (or otherwise fewer) detector elements.