C-SPECT - a Clinical Cardiac SPECT/Tct Platform: Design Concepts and Performance Potential.
C-SPECT - a Clinical Cardiac SPECT/Tct Platform: Design Concepts and Performance Potential.
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DOI：
10.1109/tns.2009.2028138
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发表时间：
2009-10-06
影响因子：
1.8
通讯作者：
Liu J
中科院分区：
文献类型：
--
作者：
Chang W;Ordonez CE;Liang H;Li Y;Liu J
由于心脏发出的光子很少，临床心脏SPECT成像主要受到光子统计学的限制。当前SPECT系统的次优检测效率不仅限制了临床心脏SPECT成像的质量，而且使得更先进的潜在应用难以实现。我们提出了一个高性能的系统平台- C-SPECT，它具有其采样几何优化的质量和数量的检测发射的光子。C-SPECT具有围绕患者胸腔左前侧的固定C形机架。机架中的固定C形准直器和检测器系统提供光子发射的有效且高效的检测和采样。对于心脏成像，C-SPECT平台可以在相同的采样分辨率下实现传统SPECT系统的2至4倍的系统几何效率。该平台还包括用于衰减校正的集成透射CT。C-SPECT系统执行连续高质量发射和透射成像的能力可以为临床成像带来具有成本效益的高性能。此外，C-SPECT系统可以提供高检测效率，以适应门控和动态心脏成像的快速采集速率。本文介绍了C-SPECT的设计概念和性能潜力，并说明了如何在一个基本的系统中实现这些概念。
Because of scarcity of photons emitted from the heart, clinical cardiac SPECT imaging is mainly limited by photon statistics. The sub-optimal detection efficiency of current SPECT systems not only limits the quality of clinical cardiac SPECT imaging but also makes more advanced potential applications difficult to be realized. We propose a high-performance system platform - C-SPECT, which has its sampling geometry optimized for detection of emitted photons in quality and quantity. The C-SPECT has a stationary C-shaped gantry that surrounds the left-front side of a patient’s thorax. The stationary C-shaped collimator and detector systems in the gantry provide effective and efficient detection and sampling of photon emission. For cardiac imaging, the C-SPECT platform could achieve 2 to 4 times the system geometric efficiency of conventional SPECT systems at the same sampling resolution. This platform also includes an integrated transmission CT for attenuation correction. The ability of C-SPECT systems to perform sequential high-quality emission and transmission imaging could bring cost-effective high-performance to clinical imaging. In addition, a C-SPECT system could provide high detection efficiency to accommodate fast acquisition rate for gated and dynamic cardiac imaging. This paper describes the design concepts and performance potential of C-SPECT, and illustrates how these concepts can be implemented in a basic system.