According to at least one aspect, a method for computed tomography (CT) fluoroscopy can include acquiring a plurality of pairs of projections of an interventional device using CT fluoroscopy. Each pair of the projections can be obtained at a predetermined first angular separation greater than a second angular separation used for a full dose CT scan of a target object, by rotating a gantry of a CT scanner. The method can include identifying a position of the interventional device in real time for each pair of the projections, using back-projection of images of the interventional device from the respective pair of projections. The method can include superimposing an image of the interventional device on a 3-D image of an anatomical region at an identified position of the interventional device.

The present invention, in one form, is a method for deriving respiratory gated PET image reconstruction from raw PET data. In reconstructing the respiratory gated images in accordance with the present invention, respiratory motion information derived from individual voxel signal fluctuations, is used in combination to create usable respiratory phase information. Employing this method allows the respiratory gated PET images to be reconstructed from PET data with out the use of external hardware, and in a fully automated manner.

An apparatus for displaying a moving region of interest located within a body includes a positioning system to determine a position and orientation (P&O) of a medical device as well as to track, using an internal position reference sensor, the motion of the region of interest over time. A compensation function block generates a motion compensation function based on the motion of the region of interest, which is configured to compensate for the motion of the region of interest between a first time, for example a time at which an image was acquired and a second time, for example a time at which a P&O of the device was measured. The measured P&O is corrected using the compensation function. A representation of the medical device is superimposed on the image in accordance with the corrected P&O.

The embodiments relate to a device for positioning an examination object when using an imaging system. The device includes a positioning device for the purpose of positioning the examination object for data capture by the imaging system, and at least one sensor fixed to the positioning device. The at least one sensor is configured to capture a movement of the examination object relative to the positioning device. The device is configured to provide the movement to the imaging system.

Systems and methods described herein generally relate to object detection for nuclear medicine (NM) imaging. The systems and methods acquire triplets representing line of sights between a plurality of receive diodes and light emitting diodes (LEDs) positioned along a circumference of a gantry with respect to one or more objects of a patient. The systems and methods identify a number of the one or more objects based on a number of triplets for one of the LEDs. When a single object is identified, the systems and methods determine a shape of the single object based on a reference point within the single object and line of sights adjacent to the single object. Alternatively, when a plurality of objects are identified, the systems and methods utilize the line of sights to identify shapes of the plurality of objects.

A method may include: obtaining a 3D CT image of a scanning area of a subject; obtaining PET data of the scanning area of the subject; gating the PET data based on a plurality of motion phases; reconstructing a plurality of gated 3D PET images; registering the plurality of gated 3D PET images with a reference 3D PET image; determining a motion vector field corresponding to a gated 3D PET image of the plurality of gated 3D PET images based on the registration; determining a motion phase for each of the plurality of CT image layers; correcting, for each of the plurality of CT image layers, the CT image layer with respect to a reference motion phase; and reconstructing a gated PET image with respect to the reference motion phase based on the corrected CT image layers and the PET data.

The present invention relates to monitoring motion in diagnostic imaging or radiation therapy. In order to improve workflow, a device is proposed that comprises an input unit, a processing unit, and an output unit. The input unit is configured to receive an electroencephalogram (EEG) signal measured from a patient. The processing unit is configured to determine a readiness potential (RP) based on the received EEG signal, to determine whether patient motion is likely to happen based on the received EEG signal, and to provide a control signal via the output unit as output, if it is predicted that patient motion is likely to happen. The control signal is usable for controlling an apparatus to perform a function to reduce motion artefacts during the medical imaging or to assure that radiation dose is delivered according to a planned dose map during the radiation therapy.

Systems and methods for medical imaging may be provided. A respiratory amplitude of a respiratory motion of a subject during a medical scan may be determined based on a respiratory signal relating to the respiratory motion. The respiratory signal may be collected using a respiratory motion detector by emitting detecting signals toward a target region of the subject. Surface information of the target region may be obtained. The respiratory amplitude may be corrected based on the surface information of the target region.

The technology relates to a methods and systems for improving medical imaging procedures. An example method includes receiving a first set of quality metrics for a plurality of medical images acquired at a first imaging facility; receiving a second set of quality metrics for a second plurality of medical images acquired at a second imaging facility; comparing the first set of quality metrics to the second set of quality metrics; based on the comparison of the first set of quality metrics to the second set of quality metrics, generating a benchmark for at least one metric in the first set of quality metrics and the second set of quality metrics; generating facility data based on the generated benchmark and the first set of quality metrics; and sending the facility data to the first imaging facility.

The present invention discloses an analysis method and system for detecting vascular structures at arterial, capillary, and venous phases from time-series digital subtraction angiographic images. The method comprises the steps of: acquiring a time-series dataset of a subject using at least one rotating x-ray source and detector pair; administrating a contrast media to a blood vessel of the subject during the data acquisition; applying a motion artifact correction to the time-series dataset; and applying a segmentation method to the time-series dataset for identifying vascular structures with different flow patterns of the contrast media. The invention offers the potential to efficiently provide quantitative flow changes inside the clinical operation room without manual selection and motion artifact error.