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Soft Tissue Attenuation Patterns Associated with Upright Acquisition SPECT Myocardial Perfusion Imaging: A
Rami Doukky1, Mouyyad Rahaby, Dave Chawla
1Section of Cardiology, Rush University Medical Center, Chicago, IL, USA.
The Open Cardiovascular Medicine Journal
|March 22, 2012
Summary
Soft-tissue attenuation artifacts are common in upright SPECT myocardial perfusion imaging (MPI). Their patterns and frequency vary by gender and body habitus, impacting accurate MPI interpretation.
Area of Science:
- Medical Imaging
- Nuclear Cardiology
- Diagnostic Imaging
Background:
- Soft tissue attenuation artifacts in upright SPECT MPI are not well understood.
- This study investigates the patterns and prevalence of these artifacts.
Purpose of the Study:
- To describe attenuation artifact patterns in upright SPECT MPI.
- To explore the influence of gender and body habitus on these artifacts.
Main Methods:
- Cross-sectional study of 212 normal SPECT MPI studies.
- Acquired using an upright patient-position imaging system.
Main Results:
- Common attenuation patterns: inferior (63.7%), lateral (24.1%), anterior (6.1%).
- Anterior attenuation more prevalent in women; lateral attenuation linked to obesity.
- Inferior attenuation more common in men.
Conclusions:
- Soft tissue attenuation artifacts are frequent in upright SPECT MPI.
- Understanding artifact patterns and their relation to patient characteristics is crucial for accurate interpretation.
