14 results about "Scout Scan" patented technology

A method for a radiation therapy system comprises: causing a graphical representation of a movable support couch of the X-ray imaging system to be displayed, wherein the graphical representation includes one or more reference markers that each correspond to a respective physical feature of the movable support couch; receiving a first user input that includes a first position indicator that corresponds to a first boundary of an X-ray imaging region; and generating an X-ray image of the X-ray imaging region, wherein a first edge of the X-ray image corresponds to the first boundary.

A system for combining a plurality of scans in a computed tomography (CT) imaging workflow, the system comprising: a protocol selection module configured to select two or more scan protocols for a patient; a scan combining module configured to combine scans associated with the selected scan protocol into a combined scan, where the scans are continuous or discontinuous based on the anatomical landmark; and a scan execution module configured to control the CT scanner to perform the combined scan on the patient.

In magnetic resonance imaging, shape estimation is used to limit patient burns. A localizer image or scout scan is used to determine some of the patient shape and corresponding position. A missing part, such as the arm not in the scout scan field of view, is inferred from the localizer image. The position of the inferred body part is used to predict the risk of burn, allowing generation of a warning to reposition the patient and / or change the scan settings.

A system for combining multiple scans in a computed tomography (CT) imaging workflow, comprising a protocol selection module configured to select two or more scan protocols for a patient, a scan combination module configured to combine the scans associated with the selected scan protocols into a combined scan, wherein the scan is either contiguous or non-contiguous based on anatomical landmarks, and a scan execution module configured to control a CT scan machine to execute the combined scan on the patient.

In magnetic resonance imaging, shape estimation is used to limit patient burns. A localizer image or scout scan is used to determine some of the patient shape and corresponding position. A missing part, such as the arm not in the scout scan field of view, is inferred from the localizer image. The position of the inferred body part is used to predict the risk of burn, allowing generation of a warning to reposition the patient and / or change the scan settings.

A method for positioning of a subject for imaging includes generating an anatomical reference image of the subject based on scan data acquired during a scout scan and causing display, on a graphical user interface, of the anatomical reference image with a sensitivity ruler and a scan range. The sensitivity ruler indicates a detection sensitivity along an axial field of view of an emission tomography scanner. The method includes automatically adjusting a position of the subject so that a region of interest to be imaged is centered within the axial field of view to maximize the detection sensitivity during a diagnostic scan with the emission tomography scanner. The method includes acquiring emission tomography scan data of the region of interest during the diagnostic scan and reconstructing a diagnostic image based on the emission tomography scan data. The diagnostic image has higher image quality than the anatomical reference image.

A frequency offset is selected based on similarity measures of multiple MRI images obtained from frequency scout measurements associated with multiple frequency offsets from a reference frequency of a magnetization excitation pulse. The similarity measure for each respective MRI image of the multiple MRI images is determined based on a comparison between at least one reference image and the respective MRI image. The at least one reference image is determined from the multiple MRI images based on spectrum information of each of the multiple MRI images. Such methods facilitate automatically determining / selecting a more optimal frequency offset for an MRI scan following a frequency scout scan, in particular, for an SSFP or a bSSFP pulse sequence, and thereby banding artifacts and / or flow-related artifacts can be reduced for the MRI scan.

An apparatus for performing automatic exposure control in a computed tomography (CT) imaging system including an X-ray source is provided. The apparatus includes processing circuitry configured to acquire helical scan data from a scout scan performed on a first imaging object, determine a target noise standard deviation (STD) for an imaging scan to be performed on the first imaging object after the scout scan, retrieve a pre-stored attenuation-noise-dose relationship relating attenuation of X-rays from the X-ray source that pass through a second imaging object, noise present in reconstructed images of the second imaging object, and tube current values applied to the X-ray source, use the acquired helical scan data and the determined target noise STD to generate a tube current modulation curve, based on the retrieved attenuation-noise-dose relationship, and perform the imaging scan on the first imaging object using the generated tube current modulation curve.

An apparatus (1) for use in conjunction with a medical imaging device (2) having an imaging device controller (4) that displays a graphical user interface (GUI) (8) including a preview image viewport (9). The apparatus includes at least one electronic processor (20) programmed to: receive a video feed (17) of the GUI displayed on the imaging device controller; extract a preview image (12) displayed in the preview image viewport from the live video feed of the GUI; perform an image analysis (38) on the extracted preview image to detect one or more image features (42) indicative of one or more potential problems associated with a medical imaging examination performed with the medical imaging device; and output an alert (30) when one or more potential problems associated with the medical imaging examination is detected from the one or more image features.

A magnetic resonance imaging support method according to an embodiment includes an acquisition step, a multi-planar reconstruction step, a first determination step, and a second determination step. The acquisition step acquires, by performing a scout scan on a subject, a plurality of first slice images corresponding to different slice positions, the plurality of first slice images corresponding to either sagittal planes or coronal planes. The multi-planar reconstruction step generates a second slice image corresponding to the axial plane by performing multi-planar reconstruction based on the plurality of first slice images. The first determination step determines a position corresponding to a specific part of the subject based on the second slice image. The second determination step determines a range to be scanned in a main scan based on the plurality of first slice images at the position determined by the first determination step.

The invention relates to the field of nondestructive testing of medical metal parts, and discloses a medical metal part multi-dimensional detection system and a medical metal part multi-dimensional detection method. The system integrates an X-ray transmission imaging module, an X-ray diffraction module and a synchronous optical three-dimensional shape measurement module; the external geometrical morphology, the internal three-dimensional structure and the material internal crystal structure information of the medical metal piece can be synchronously collected in the single clamping and scanning process. According to the method, a high-risk area is identified through reconnaissance scanning, and a self-adaptive scanning strategy is generated according to the high-risk area so as to optimize data acquisition efficiency and quality. The core technology of the method comprises the steps that a high-precision external three-dimensional shape model is generated through optical data, boundary constraint is applied to the iterative CT reconstruction process of an internal three-dimensional structure model, and therefore the reconstruction precision of a near-surface area is remarkably improved. On the basis, the system further generates a three-dimensional stress field and phase field model, and anisotropic feature mapping can be carried out on the additive manufacturing part.

An apparatus for performing X-ray exposure control in a computed tomography (CT) imaging system including an X-ray source is provided. The apparatus includes processing circuitry configured to acquire scout scan data from a scout scan performed on an imaging object, in a slice-by-slice manner, generate a plurality of view-group-based noise images for slices of the CT imaging system, based on the acquired scout scan data, identify an ROI with respect to which the X-ray exposure control is to be performed, determine a target noise SD to be achieved by performing the X-ray exposure control, generate a tube current modulation curve with respect to the identified ROI, based on the generated plurality of view-group-based noise images and the determined target noise SD, and perform an imaging scan on the imaging object, with a tube current applied to the X-ray source being modulated based on the generated tube current modulation curve.

To provide a magnetic resonance imaging support method for supporting generation of a scan plan of an appropriate actual scan.SOLUTION: The method includes an acquisition step, a multiplanar reconstruction step, a first determination step, and a second determination step. In the acquisition step, a plurality of first slice images corresponding to different slice positions and corresponding to one of a sagittal plane and a coronal plane are acquired by performing a scout scan on a subject. In the multi-planar reconstruction step, a second slice image corresponding to an axial plane by multi-planar reconstruction is generated based on the plurality of first slice images. In the first determination step, a position corresponding to a specific site of the subject is determined based on the second slice image. In the second determination step, a range to be scanned in the actual scan is determined based on the plurality of first slice images at the position determined in the first determination step.SELECTED DRAWING: Figure 2