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1. 发明授权

US5376796A Proximity detector for body contouring system of a medical camera 失效
标题翻译：医用摄像机身体轮廓系统接近检测仪
公开(公告)号：US5376796A
公开(公告)日：1994-12-27
申请号：US981833
申请日：1992-11-25
申请人： David A. Chan , Robert L. Kay , Matthew J. Murphy , Steven M. Jones , Kenneth G. Bayer , Paul Hug , Horace H. Hines
发明人： David A. Chan , Robert L. Kay , Matthew J. Murphy , Steven M. Jones , Kenneth G. Bayer , Paul Hug , Horace H. Hines
IPC分类号： G01B11/24 , G01T1/164 , G01T1/166 , G01T1/20
CPC分类号： G01B11/2433 , G01T1/1648
摘要： 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. The proximity detector units are stationary with respect to movement of the scanning camera toward said target body. Body contour data is also used for attentuation correction.
摘要翻译：用于核医学中使用的身体轮廓的接近检测的直接测量系统。测量系统包括安装在核医学照相机的台架结构上的两个或三个接近检测器单元，每个发射能量束扫过目标体的一部分。每个检测器能够使用光束样本直接测量从接近检测器单元到目标体的距离。然后，检测器产生目标体的身体轮廓，其用于最小化扫描照相机的准直器与目标体表面之间的距离，从而改善扫描照相机的图像质量。沿着目标身体的颅尾轴线，物体和台架之间存在相对运动，用于扫描连续的身体轮廓。连续的身体轮廓组合在一起以实现目标身体的完整的身体轮廓。接近检测器单元相对于扫描照相机朝向所述目标体的运动是静止的。身体轮廓数据也用于注意校正。

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