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How to detect and avoid myocardial perfusion SPECT artifacts

¹Department of Radiology, St. Luke's-Roosevelt Hospital, New York, NY 10025.

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine

|April 1, 1994

Summary

Artifacts in single-photon emission computed tomography (SPECT) myocardial perfusion imaging can lead to false positives. Careful attention to technical factors and imaging protocols minimizes these SPECT imaging artifacts.

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Area of Science:

Nuclear cardiology
Medical imaging physics

Background:

Single-photon emission computed tomography (SPECT) myocardial perfusion imaging is a valuable diagnostic tool.
Artifacts can compromise the accuracy and reliability of SPECT studies, leading to false-positive results.

Purpose of the Study:

To identify common sources of artifacts in SPECT myocardial perfusion imaging.
To discuss methods for avoiding, detecting, and correcting these artifacts to improve diagnostic accuracy.

Main Methods:

Review of common artifact sources including detector nonuniformity, center of rotation errors, camera misalignment, reconstruction errors, patient motion, and attenuation.
Discussion of preventative measures such as quality control and prone imaging.
Emphasis on careful image inspection and reprocessing for artifact correction.

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Main Results:

Nonuniformity, center of rotation errors, misalignment, reconstruction issues, patient motion, and attenuation are key artifact sources.
Quality control, prone positioning, and meticulous image review are crucial for artifact mitigation.
Artifacts can be avoided through strict adherence to technical protocols and awareness of attenuation.

Conclusions:

Minimizing artifacts in SPECT myocardial perfusion imaging is essential for reducing false-positive diagnoses.
A combination of quality control, optimized imaging techniques, and careful analysis is required for accurate SPECT interpretation.