Parameters Affecting Image Quality of Myocardial Perfusion SPECT

Abstract

Background: Cardiac SPECT imaging is crucial for diagnosing and evaluating
heart conditions, yet the quality of these images can be significantly influenced
by various acquisition parameters. This study investigates how different
acquisition settings affect the diagnostic quality of cardiac SPECT images to
enhance imaging outcomes. We evaluated different acquisition parameters,
including time per projection (15 seconds vs. 30 seconds), projection
configurations (e.g., 32 projections), rotation modes (noncircular), and angular
settings. Data were collected and analyzed in non-attenuation corrected (NAC)
scenarios. The results revealed that increasing the time per projection
significantly improved image quality, with 15-second projections yielding
results comparable to 30-second projections. Among configurations, data
obtained with 32 projections consistently showed superior quality across all
metrics. Noncircular rotation modes generally produced better image quality
than circular orbits, and an angular configuration of 76 degrees was optimal.
These findings underscore the importance of optimizing acquisition parameters
in cardiac SPECT imaging. Noncircular rotation modes and specific angular
configurations can substantially enhance image quality. By fine-tuning these
parameters, healthcare providers can achieve more accurate and reliable
imaging results, ultimately improving patient diagnosis and treatment. This
study provides a valuable foundation for ongoing research and advancements in
imaging techniques to achieve optimal image quality and diagnostic precision.