Design and evaluation of HEADTOME-IV, a whole-body positron emission tomograph
Design and evaluation of HEADTOME-IV, a whole-body positron emission tomograph
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全身正电子发射断层扫描仪 HEADTOME-IV 的设计与评估
DOI：
10.1109/23.34594
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发表时间：
1989
影响因子：
1.8
通讯作者：
K. Tanaka
中科院分区：
文献类型：
--
作者：
H. Iida;S. Miura;I. Kanno;M. Murakami;K. Takahashi;K. Uemura;Y. Hirose;M. Amano;S. Yamamoto;K. Tanaka
研制了一种全身正电子发射层析成像仪Headtome-IV，并对其物理性能进行了研究。在视场中心进行固定采样，实现了4.5 mm的面内空间分辨率。直面和横面轴向切片厚度分别为9.5 mm和9.0 mm。通过轴向移动龙门架，可准同时获得14片或21片的跨轴图像。实时大规模缓存存储系统允许对死区时间和放射性核素衰变进行实时校正，并允许实时加权积分，以便快速计算速率常数图像。>
A whole-body positron emission tomograph called Headtome-IV has been developed, and its physical performance has been investigated. An in-plane spatial resolution of 4.5 mm was realized with stationary sampling at the center of the field of view. The axial slice thicknesses were 9.5 and 9.0 mm for direct and cross planes, respectively. By moving the gantry framework axially, transaxial images of 14 or 21 slices are obtained quasi-simultaneously. The real-time large-scale cache memory system allowed real-time corrections for deadtime and radionuclide decay and real-time weighted integration for the purpose of a rapid calculation of rate-constant images. >