Korean Journal of Radiology

The Korean Society of Radiology (대한영상의학회)
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Assessment of Left Ventricular Function and Volume in Patients Undergoing 128-Slice Coronary CT Angiography with ECG-Based Maximum Tube Current Modulation: a Comparison with Echocardiography

  • Lim, Soo-Jin (Department of Cardiology, Kim Hae Jungang Hospital) ;
  • Choo, Ki-Seok (Department of Radiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine) ;
  • Park, Yong-Hyun (Department of Cardiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine) ;
  • Kim, Jeong-Su (Department of Cardiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine) ;
  • Kim, June-Hong (Department of Cardiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine) ;
  • Chun, Kook-Jin (Department of Cardiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine) ;
  • Jeong, Dong-Wook (Department of Family Medicine, Pusan National University Yangsan Hospital, Pusan National University School of Medicine)
  • Published : 2011.04.01
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Abstract

Objective: To compare multi-detector CT (MDCT) using 128-slice coronary CT angiography (Definition AS+, Siemens Medical Solution, Forchheim, Germany) with ECG-based maximum tube current modulation with echocardiography for the determination of left ventricular ejection fraction (LVEF), end-diastolic volume (EDV), end-systolic volume (ESV), as well as assessing coronary artery image quality and patient radiation dose. Materials and Methods: Thirty consecutive patients (M:F = 20:10; mean age, 57.9 ${\pm}$ 11.4 years) were referred for MDCT for evaluation of atypical chest pain. EF, EDV and ESV were determined for both MDCT and echocardiography, and the correlation coefficients were assessed. Coronary artery segment subjective image quality (1, excellent; 4, poor) and radiation dose were recorded. Results: Left ventricular EF, EDV, and ESV were calculated by MDCT and echocardiography and the comparison showed a significant correlation with those estimated by echocardiography (p < 0.05). Consistently, the LVEFs calculated by MDCT and echocardiography were not statistically different. However, LV, EDV and ESV from MDCT were statistically higher than those from echocardiography (p < 0.05). The average image quality score of the coronary artery segment was 1.10 and the mean patient radiation dose was 3.99 ${\pm}$ 1.85 mSv. Conclusion: Although LV volume was overestimated by MDCT, MDCT provides comparable results to echocardiography for LVEF and LVV, with a low radiation dose.

Keywords

References

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