Journal of Nuclear Cardiology

, Volume 26, Issue 1, pp 333–336 | Cite as

The impact of patient-to-detector distance on LV volumes and TID index on SPECT myocardial perfusion imaging: Emphasis on consistent patient-detector positioning in stress and rest phases

  • Mohsen QutbiEmail author
  • Mehdi Soltanshahi
Images that Teach


Correct interpretation of SPECT myocardial perfusion imaging (MPI) depends largely on comparability of stress and rest images from technical points of view. Here, we present two cases with inconsistent axial position of patient on the scanning table relative to detector in stress and rest phases. Images were acquired in one case with the orbit mode of auto-body contouring (ABC) and in the other case with fixed-radius non-circular orbit.

Case History

Patient A was an 85-year-old male referred to our laboratory for an MPI for evaluation of occasional chest pain. A same-day stress-rest Dipyridamole SPECT MPI was performed. Image acquisition parameters were set as routine, including orbit mode of ABC. Because of markedly increased TID (i.e., 1.62), the rest image was repeated. As we thought this might be resulted from the greater distance between the patient’s chest and detector surface set by ABC at rest compared to stress phase, we intended to position the patient as similar...



No conflict of interests is declared.


  1. 1.
    Holly TA, Abbott BG, Al-Mallah M, Calnon DA, Cohen MC, DiFilippo FP, et al. Single photon-emission computed tomography. J Nucl Cardiol 2010;17:941-73.CrossRefGoogle Scholar
  2. 2.
    Verberne HJ, Acampa W, Anagnostopoulos C, Ballinger J, Bengel F, De Bondt P, et al. EANM procedural guidelines for radionuclide myocardial perfusion imaging with SPECT and SPECT/CT: 2015 revision. Eur J Nucl Med Mol Imaging 2015;42:1929-40.CrossRefPubMedCentralGoogle Scholar

Copyright information

© American Society of Nuclear Cardiology 2018

Authors and Affiliations

  1. 1.Department of Nuclear Medicine, Taleghani Educational Hospital, School of MedicineShahid Beheshti University of Medical SciencesTehranIran

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