Nucl Med Mol Imaging.  2020 Jun;54(3):139-146. 10.1007/s13139-020-00644-9.

Computed Tomography (CT) Protocols Associated with Cardiac and Bone Single-Photon Emission Computed Tomography/CT (SPECT/CT) in Korea

  • 1Department of Nuclear Medicine, Seoul Medical Center, Seoul, Republic of Korea
  • 2Department of Nuclear Medicine, Hanyang University Guri Hospital, Guri-si, Republic of Korea
  • 3Department of Nuclear Medicine, Soonchunhyang University Bucheon Hospital, Bucheon-si, Republic of Korea
  • 4Department of Nuclear Medicine, Keimyung University Dongsan Medical Center, Daegu, Republic of Korea
  • 5Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Republic of Korea
  • 6Department of Nuclear Medicine, Injae University Haeundae Paik Hospital, Busan, Republic of Korea
  • 7Division of Nuclear Medicine, Department of Radiology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
  • 8Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
  • 9Department of Nuclear Medicine, Ajou University Medical Center, Suwon-si, Republic of Korea
  • 10Department of Electronic Engineering, Pai Chai University, Daejeon, Republic of Korea
  • 11Department of Nuclear Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
  • 12Department of Nuclear Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
  • 13Department of Nuclear Medicine, Samsung Medical Center, Seoul, Republic of Korea
  • 14Korean Society of Nuclear Medicine Quality Control Committee, Seoul, Republic of Korea


Single-photon emission computed tomography/computed tomography (SPECT/CT) is an advanced hybrid nuclear medicine technology that generates both functional and anatomical images in a single study. As utilization of SPECT/CT in Korea has been increasing, the purpose of this study was to survey its application of cardiac and skeletal SPECT/CT imaging for protocol optimization.
We surveyed CT protocols established for cardiac and skeletal SPECT/CT. We searched the guidelines for the CT protocols for SPECT/CT and reviewed the literature recently published.
Among 36 hybrid SPECT scanners equipped with four or more multi-channel detector CTs (MDCTs), 18 scanners were used to perform cardiac studies at both very low current CT (30–80 mA; 11.1%) and ultra-low current CT (13–30 mA; 88.9%). Among the 33 canners, very low current (≤ 80 mA) CT or low current CT (80–130 mA) was used in 23.5%, and 41.8% for spine disorders, and in 36.4% or 30.3% for foot/ankle disorders, respectively. In the CT reconstructions, slice thickness of 5 mm for cardiac studies was most commonly used (94.4%); thinner slices (0.6–1.0 mm) for spine and foot/ankle studies were used in 24.2% and 45.5%, respectively. We also reviewed the international guidelines.
The results and current recommendations will be helpful for optimizing CT protocols for SPECT/CT. Optimization of SPECT/CT protocols will be required for generating the proper strategy for the specific lesions and clinical purpose.


SPECT/CT; CT protocols; Optimization
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