Utility of multislice computed tomography with a 64-data acquisition system for four-dimensional volumetric analysis using a pulsating phantom and considering pulsation rate and reconstruction methods

摘要: Abstract Purpose To evaluate 64-data acquisition system (DAS) MSCT (Light Speed VCT, GE) at 0.625 mm slice thickness, 0.35 s/rotation, tube 120 kV 400 mA, ECG-gated for 4-D volumetric analysis, we used pulsating phantoms to measure end-diastolic (EDV) and end-systolic (ESV) volume ejection fraction (EF) assess reconstruction methods especially higher pulsation rates. Materials A device (AZ-631N, Anzai Medical) with contrast material (300 mgI/dl) diluted 10× saline was moved 40–110 to-and-fro movements/min. performed ×5 per rate. The EDV ESV were measured using workstation (Virtual Place Advance Plus, Aze). Results mean 98, 97, 97 96, 95, 94, 101% 145, 143, 142, 144, 149, 156 160%, respectively, compared the static state. EF 80, 81, 79, 77, 73, 76% pulsations/min, when reconstructed by segmented method, but improved 82, 83, 85, 84% 80–110 beat/min burst method. latter is therefore more appropriate Conclusion This 64-DAS can even high beat rates (up 110 beats minute) Because tended be overestimated approximately 140–160% state, underestimated 73–81% However, of >70 beat/min, an method (the method) may further improve accuracy measurement.