Proceedings of the cardiac PET summit meeting 12 may 2014: Cardiac PET and SPECT instrumentation

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• 作者：Ernest V. Garcia PhD
• 关键词：Digital PET detectors ; time of flight ; 3D PET ; hybrid PET/CT ; CZT detectors ; cost of PET instrumentation
• 刊名：Journal of Nuclear Cardiology
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：22
• 期：3
• 页码：563-570
• 全文大小：922 KB
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• 作者单位：Ernest V. Garcia PhD (1)
  
  1. Department of Radiology and Imaging Sciences, Emory University, 101 Woodruff Circle, Room 1203, Atlanta, GA, 30322, USA
  
• 刊物主题：Cardiology; Nuclear Medicine; Imaging / Radiology;
• 出版者：Springer US
• ISSN：1532-6551

文摘

Advances in PET and SPECT and imaging hardware and software are vastly improving the noninvasive evaluation of myocardial perfusion and function. PET perfusion imaging has benefitted from the introduction of novel detectors that now allow true 3D imaging, and precise attenuation correction (AC). These developments have also resulted in perfusion images with higher spatial and contrast resolution that may be acquired in shorter protocols and/or with less patient radiation exposure than traditional PET or SPECT studies. Hybrid PET/CT cameras utilize transmission computed tomographic (CT) scans for AC, and offer the additional clinical advantages of evaluating coronary calcium and myocardial anatomy but at a higher cost than PET scanners that use 68Ge radioactive line sources. As cardiac PET systems continue to improve, dedicated cardiac SPECT systems are also undergoing a profound change in their design. The scintillation camera general purpose design is being replaced with systems with multiple detectors focused on the heart yielding 5 to 10 times the sensitivity of conventional SPECT. As a result, shorter acquisition times and/or lower tracer doses produce higher quality SPECT images than were possible before. This article reviews these concepts and compares the attributes of PET and SPECT instrumentation.