In an automatic exposure control method for X-ray imaging, a visible light image of a subject under test is acquired, an initial region of interest (ROI) is defined on the visible light image, the subject under test is pre-exposed with a set pre-exposure dose to obtain a first image, an ROI on the first image is defined based on the initial ROI, a reference pixel value is defined based on the ROI, and a main exposure dose for an actual exposure is calculated according to the reference pixel value. With the imaging quality guaranteed, a physical automatic exposure control (AEC) chamber may be omitted, and the number, positions and sizes of ROIs can be adjusted according to the actual requirements.

The disclosure relates to a mobile X-ray device having an equipment cart that is movable on wheels and has a lifting device on which a support assembly is arranged. A C-arm is mounted to the support assembly so as to be displaceable along the circumference of the support assembly, wherein the C-arm has an X-ray source and an X-ray receiver arranged opposite the X-ray source. In order to simplify the handling of a mechanical zoom on mobile X-ray devices, a motion controller is provided by which, in any given pose of the C-arm, a movement of the C-arm is controlled in such a way that the central axis extending between X-ray source and X-ray receiver is fixed in space.

A radiographing system that can attach a dose index for a composition image and perform dose management in a composition image is provided. The radiographing system includes: a dose index calculation unit configured to respectively calculate dose indices from a plurality of radiographic images, an obtaining unit configured to obtain a representative dose index from among the plurality of dose indices calculated by the dose index calculation unit, and a storage unit configured to store the representative dose index together with the composition image.

According to one embodiment, an X-ray computed tomography apparatus includes a gantry body, a column, and fixing equipment. The gantry body includes a bore to form a field of view, and also includes an X-ray tube and an X-ray detector. The column supports the gantry body so that the gantry body is vertically movable with a central axis of the bore extending vertically to a floor face. The fixing equipment fixes a subject holder so that the subject holder is located on a passage of the bore and partially in the bore in a phase of attaching a subject to the subject holder.

An imaging system may include an imaging detector to capture an image of human tissue and a compression paddle situated apart from the imaging detector to compress the human tissue between the compression paddle and the imaging detector. A force sensor may generate a force signal indicating a measure of force applied superior to the human tissue. A movement detection circuit may filter a movement signal from the force signal indicating a measure of movement of the compressed human tissue. A movement analysis module may determine that the movement signal is beyond a movement threshold. An image correction module to perform a corrective action based upon the determination that the movement signal is beyond a movement threshold.

Provided is a radiation imaging apparatus, including: a radiation detector configured to detect radiation; a first detector designation unit configured to designate a first radiation detector; a second detector designation unit configured to designate a second radiation detector registered in the radiation imaging apparatus in advance; and an information control unit configured to associate setting information on the second radiation detector with the first radiation detector after the first radiation detector and the second radiation detector are designated.

A radiography system comprising a radiography device and a power supply device is provided. The radiography device includes a sensor unit for obtaining a radiographic image and is capable of non-contact power reception, and the power supply device is capable of non-contact power supply to the radiography device. In a period in which a fluctuation in a power supply frequency of the power supply from the power supply device to the radiography device affects a signal obtained by the radiography device from the sensor unit, the power supply device supplies power to the radiography device at a constant power supply frequency.

A radiation imaging system includes pixel array, scanning circuit to scan rows of the pixel array, and readout circuit to read signals from the pixel array. Each pixel includes converter to generate electric signal corresponding to radiation and transistor connected to the converter. The readout circuit reads signal from the converter via the transistor. The system performs image capturing modes and conditioning mode of conditioning a threshold voltage of the transistor. In the conditioning mode, the scanning circuit supplies, to a gate of the transistor, an OFF voltage different from OFF voltages in the image capturing modes. The scanning circuit scans the rows in units of at least one row in the image capturing modes, and scans the rows in units of at least two rows in the conditioning mode.

A system and method for constructing fluoroscopic-based three dimensional volumetric data from two dimensional fluoroscopic images including a computing device configured to facilitate navigation of a medical device to a target area within a patient and a fluoroscopic imaging device configured to acquire a fluoroscopic video of the target area about a plurality of angles relative to the target area. The computing device is configured to determine a pose of the fluoroscopic imaging device for each frame of the fluoroscopic video and to construct fluoroscopic-based three dimensional volumetric data of the target area in which soft tissue objects are visible using a fast iterative three dimensional construction algorithm.

Disclosed herein are an X-ray detector having impact resistance, and an X-ray imaging apparatus including the same. An X-ray detector for detecting X-rays irradiated from an X-ray source includes a case having at least one opening and a sensing panel configured to convert the X-rays irradiated from the X-ray source into an electrical signal. A frame detachably inserted into the inside of the case through the at least one opening. The frame includes a body on which the sensing panel is disposed and a plurality of legs extending from the edges of the body in a first direction of the X-ray detector. A plurality of buffer members disposed between the plurality of legs and the case and in close contact with the plurality of legs and the case while surrounding a plurality of surfaces of each of the plurality of legs.