Abstract
Truncation artifact during single-photon emission computed tomography occurs when some part of body, such as left ventricle in myocardial perfusion imaging, lies outside the field-of-view during image acquisition. Improper adjustment of axis of rotation of detectors regarding the patient on the scanning table is the main cause. Large or slim patient body habitus is reported as source of this artifact. However, there may be other sources including that in our case, in which the artifact was present in prone position but not in supine imaging. The appearance was one-sided incremental cropping of projections of one of detectors and a wedge-shaped or triangular defect in the corresponding sinogram. This finding may suggest a possible mechanical instability of the gantry during motion over the patient’s left side in prone imaging.
Keywords:
Truncation artifact, single-photon emission computed tomography, myocardial perfusion imaging
Ethics
Informed Consent: An informed written consent was obtained from the patient both for performing the scanning and also for use and anonymous publishing of the images.
Authorship Contributions
Concept: M.Q., R.A., Design: M.Q., R.A., A.A., Data Collection or Processing: R.A., Analysis or Interpretation: M.Q., R.A., A.A., Literature Search: R.A., A.A., Writing: M.Q., R.A., A.A.
Conflict of Interest: No conflicts of interest were declared by the authors.
Financial Disclosure: The authors declare that this study has received no financial support.
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