一台计算机化旋转层流放射性核素相机。

A computerized rotating laminar radionuclide camera.

作者信息

Mauderli W, Luthmann R W, Fitzgerald L T, Urie M M, Williams C M, Tosswill C H, Entine G

出版信息

J Nucl Med. 1979 Apr;20(4):341-4.

Abstract

We have constructed a radionuclide camera that embodies a unique detector-collimator concept and provides a radically new approach to imaging. The heart of the instrument is a linear array of semiconductor detectors separated by thin tungsten plates that confine the field of view of each detector to one dimension. This collimator design has a higher collection efficiency than the standard parallel-hole collimator but cannot directly produce a two-dimensional image. When multiple measurements are taken as the array rotates through 180 degrees, a computerized image restoration algorithm can then produce two-dimensional images with resolution determined by the width of the detectors. A small prototype camera has produced images with resolution superior to conventional Anger cameras.

摘要

我们构建了一种放射性核素相机，它体现了独特的探测器 - 准直器概念，并为成像提供了一种全新的方法。该仪器的核心是由薄钨板隔开的半导体探测器线性阵列，这些钨板将每个探测器的视场限制在一个维度上。这种准直器设计比标准平行孔准直器具有更高的收集效率，但不能直接产生二维图像。当阵列旋转180度进行多次测量时，一种计算机化图像恢复算法随后可以生成分辨率由探测器宽度决定的二维图像。一台小型原型相机所产生的图像分辨率优于传统的安格尔相机。