%0 Journal Article %A Huang Kemin %T Effect of different acquisition arcs on the appearance of each left ventricular wall in myocardial perfusion SPECT %D 2018 %J Journal of Nuclear Medicine %P 2108-2108 %V 59 %N supplement 1 %X 2108Aim: Effect of different acquisition arcs on the appearance of each left ventricular wall in myocardial perfusion SPECT Background: Conventional Single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) is performed in the supine position range RAO45°−LPO45°, but the effect of other acquisition arcs on imaging quality are not well described. In this study, we compared radioactivity activity over left ventricle walls as measured by different acquisition arcs to identify optima for specific applications. Methods: In total,125 low-risk coronary heart disease patients underwent 99mTc-MIBI stress MPI, of which 52 received 360° acquisition with reconstruction using different 180° projections and the remaining 73 received conventional 180° (LPO45°−RAO45°) and left-side 180°(POST180°−ANT0°) acquisition consecutively. Statistically compare the radioactive activity and defect score of each left ventricular wall from different acquisition arcs. Voluntary informed consent was obtained from all study population, and I declare that the work described in this abstract has appropriate approval under local ethical rules. Results: Myocardial slices reconstructed from POST180°−ANT0° yielded highest radioactivity uptake from inferior, lateral, and septal walls, LPO45°−RAO45° from the anterior wall, and LPO35°−RAO55° from the apical region. Compared to conventional 180° acquisition, the segments with decreased defect scores were observed in 27.67% (101/365) using left-side 180° acquisition. The proportion was significantly higher for males (P=0.035) and patients with high BMI (P=0.036). Segments with decreased defect score were mainly in inferior, septal, and lateral walls, and a greater proportion of males than females exhibited in inferior wall (P=0.004). Conclusions: The different arc of data acquisition could significantly affect the appearance of each wall of the left ventricle, POST180°−ANT0° acquisition arc represents a useful and significantly enhanced imaging quality of inferior walls especially in males. 1 %U