Abstract: A system for automatically positioning zoom regions located on imaging surfaces of an ECT camera system during ECT rotation to track relative movement of an object that is located offset from the center of rotation of the ECT camera system. During an ECT scan session, the imaging surfaces of the camera system rotation about an object of interest that is located offset from the center of rotation of the camera system in order to minimize the separation between the imaging surfaces and the object surface. Since the object of interest is offset from the center of rotation, a predetermined zoom region located on the imaging surfaces must alter its position relative to the imaging surface during an ECT scan session in order to remain aligned with the object being imaged. The system determines this alignment position and thereby adjusts, in real-time, the location on the imaging surface of the zoom regions for increased image quality.

Abstract: A direct measurement system for proximity detection of a body profile for use within nuclear medicine. The measurement system includes two or three proximity detector units mounted on a gantry structure of a nuclear medicine camera which each emit an energy beam which is swept across a portion of a target body. Each detector is capable of directly measuring the distance from the proximity detector unit to the target body with a beam sample. The detectors then create a body profile of the target body which is used to minimize the distance between the collimator of a scanning camera and the target body surface thus improving image quality of the scanning camera. There is relative motion between the object and the gantry along a cranial-caudal axis of a target body for scanning successive body profiles. Successive body profiles are combined together to achieve a complete body contour of the target body.

Abstract: A system for automatically positioning zoom regions located on imaging surfaces of an ECT camera system during ECT rotation to track relative movement of an object that is located offset from the center of rotation of the ECT camera system. During an ECT scan session, the imaging surfaces of the camera system rotate about an object of interest that is located offset from the center of rotation of the camera system in order to minimize the separation between the imaging surfaces and the object surface. Since the object of interest is offset from the center of rotation, a predetermined zoom region located on the imaging surfaces must alter its position relative to the imaging surface during an ECT scan session in order remain aligned with the object being imaged. The system determines this alignment position and thereby adjusts, in real-time, the location on the imaging surface of the zoom regions for increased image quality.