A stereoscopic imaging system and method is disclosed. In one aspect the system includes an X-ray source that emits a plurality of X-ray fanbeams. The system includes columns of detectors. Each column of detectors is arranged at a preset angle with respect to the X-ray source. The detectors detect a strength of an X-ray fanbeam penetrating an object under inspection. The detectors form transmission images when the object intersects, or moves along a direction intersecting with, the X-ray fanbeams. The system includes a reconstruction apparatus that uses any two of the formed transmission images as a binocular image. The reconstruction apparatus calculates depth information of the object on the transmission images. The reconstruction apparatus superposes and fuses the calculated depth information to obtain 3D information. The reconstruction apparatus performs 3D reconstruction so that the detected object can be presented in a stereoscopic manner from different view angles.

The present invention relates to a stereo tube radiation imaging system in which radiation emitted from each radiation source covers a different area of the detector surface. Furthermore, the present invention relates to a stereo tube imaging method wherein both radiation sources are operated independently and each cover part of the detector surface area. This is advantageous in that it may reduce radiation dose compared to known stereo tube imaging and introduces new possibilities for stereo tube imaging, such as improved object tracking within a body.

A self-shielded and computer controlled system for performing non-invasive stereotactic radiosurgery and precision radiotherapy using a linear accelerator mounted within a two degree-of-freedom radiation shield coupled to a three-degree of freedom patient table is provided. The radiation shield can include an axial shield rotatable about an axial axis and an oblique shield independently rotatable about an oblique axis, thereby providing improved range of trajectories of the therapeutic and diagnostic radiation beams. Such shields can be balanced about their respective axes of rotation and about a common support structure to facilitate ease of movement. Such systems can further include an imaging system to accurately deliver radiation to the treatment target and automatically make corrections needed to maintain the anatomical target at the system isocenter. Various subsystems to automate controlled and coordinated movement of the movable shield components and operation of the treatment related subsystems to optimize performance and ensure safety are also provided.

A method and apparatus for vascular assessment are disclosed. The apparatus, in some embodiments, receives a plurality of 2-D angiographic images of a portion of a vasculature of a subject, and processes the images to produce a stenotic model over the vasculature. The stenotic model has measurements of the vasculature at one or more locations along vessels of the vasculature. The apparatus, in some embodiments, determines a flow characteristic of the stenotic model and calculates an index indicative of vascular function, based, at least in part, on the flow characteristic in the stenotic model.

Described herein is a medical linear accelerator including an accelerator target structure constructed of a material having a thickness of less than 0.2 radiation lengths, and an accelerator structure to receive an electromagnetic wave and generate an output therapy dose rate of electrons having a beam energy between 4-25 mega-electronvolts (MeV).

The present disclosure provides a method and apparatus for detecting a dose distribution of an article. The method includes performing a fluoroscopy scanning on the article to be detected, to obtain mass data per unit area or unit volume for each point of the article to be detected; obtaining corresponding dose distribution data based on the mass data per unit area or unit volume and a preset mapping model, wherein the preset mapping model includes a mapping relationship between mass per unit area or unit volume and the dose distribution of the article under irradiation of a preset amount of energy; and matching the dose distribution data with a fluoroscopy image of the article to be detected, to generate and display a radiation image.

A mammography system includes a biopsy guidance system that employs a simplified robot arm support, to enable previously unusable locations for the mounting of the biopsy device directly to the mammography system, such as on a compression paddle, combined with a vision guidance and control system. The vision system operates to determine the position of the biopsy device and the biopsy needle tip, as well as to control the movement/operation of the biopsy guidance system, such as movement to the final end-pose or pre-firing position of the biopsy device to perform the biopsy procedure. The vision system utilizes one or more cameras to visually determine the position the biopsy device relative to a region of interest being biopsied within the required tolerances for the biopsy procedure without the need for precise positional information to be provided by the biopsy guidance system to the mammography system.

An image acquisition unit acquires a radiographic image set including a plurality of radiographic images, which have been generated by alternately irradiating a subject with radiation emitted from a plurality of radiation sources provided at different positions and alternately detecting the radiation transmitted through the subject using one detection unit, at a predetermined time interval. A feature point detection unit detects at least one common feature point in the subject from each of the plurality of radiographic images included in the radiographic image set. A positional information derivation unit derives three-dimensional positional information of the at least one feature point in the subject using a positional relationship between a position of the at least one feature point detected from each of the plurality of radiographic images on a detection surface of the detection unit and positions of the plurality of radiation sources.

A medical apparatus for X-ray analysis, includes a source for X-rays, a detector defining a detection plane, a probe with a needle for treating the patient, an immobiliser, a frame supporting the source, the detector, the immobiliser and the probe. A control unit connects to the source and detector. The probe is connected to the frame movably along a first direction, a second direction perpendicular to the first direction and a third direction at right angles to the detection plane, the first direction and the second direction lying in a plane parallel to the detection plane. The apparatus moves the probe in a zone above the immobiliser and positions the needle, along the first direction, in the zone and in the right and left side relative to the immobiliser. The immobiliser is connected to the frame and is movable, independently of the probe, along the third direction.

A method of providing by a diagnostic medical imaging device, medical image data representing a diagnostic medical image of the tissue of the patient. The method comprises segmenting, using an image segmentation criterion, in the diagnostic medical image data a diseased area image data representing a diseased area of the tissue, defining, in the segmented image data of the diagnostic medical image data, at least one treatment location, identifying, in the diagnostic medial image data, a treatment surface of the tissue, positioning the interventional device to face the treatment surface, determining a normal to a local tangent plane of the treatment surface of the tissue, the local tangent plane facing the treatment location, imaging, by an interventional medical imaging device, at least a part of the interventional device and the treatment location from a first direction perpendicular to the normal to obtain first interventional image data, verifying, using the first interventional image data, a position of the interventional device in a direction of the normal and in a second direction perpendicular to the normal and perpendicular to the first direction, imaging, by the interventional medical imaging system, at least a part of the interventional device and the treatment location from a third direction having a component in the first direction to obtain a second interventional image data, and verifying, using the second interventional image data, a position of the interventional device in the first direction.