게이트 심장 혈액풀 스캔에서 좌전사위상 각도의 변화에 따른 정량적 지표 비교

• 영문명: The Comparison of Quantitative Indices by Changing an Angle of LAO View in Multi-Gated Cardiac Blood Pool Scan
• 발행기관: 대한핵의학기술학회
• 저자명: 윤순상(Soon Sang Yoon) 남기표(Ki Pyo Nam) 류재광(Jae Kwang Ryu) 김성환(Seong Hwan Kim)
• 간행물 정보: 『핵의학기술』Vol.16 No.1, 57~61쪽, 전체 5쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2012.04.30

영문 초록

Purpose: The multi-gated cardiac blood pool scan is to evaluate the function of left ventricle (LV) and usefully observe a value of ejection fraction (EF) for a patient who is receiving chemotherapy. To calculate LVEF, we should adjust an angle of left anterior oblique (LAO) view to separate both ventricles. And by overlapped ventricles, it is possible to affect LVEF. The purpose of this study is to investigate and compare quantitative indices by changing an angle of LAO view. Materials and methods: We analyzed the 49 patients who were examined by multi-gated cardiac blood pool scan in department of nuclear medicine at Asan Medical Center from June to September 2011. Firstly, we acquired “Best septal” view. And then, we got images by addition and subtraction of angle for LAO view to anterior and lateral. We compared three LAO views for 20 people by 5 degrees and 39 people by 10 degrees. And we analyzed quantitative indices, EF, end diastole and end systole counts, by automated and manual region of interest (ROI) modes. Results: Firstly, we analyzed quantitative indices by automated ROI mode. In case of 5 degrees, the averages of EF are 61.0±7.5, 62.1±7.1, 60.9±6.7% (p=0.841) in LAO, LAO -5° and LAO +5° respectively. And there is no difference in end diastole and end systole counts (p<0.05). In case of 10 degrees, the averages of EF are 62.4±9.5, 62.3±10.8, 61.6±.9.3% (p=0.938) in LAO, LAO -10° and LAO +10° respectively. And there is no difference in end diastole and end systole counts (p<0.05). Secondly, we analyzed quantitative indices by manual ROI mode. In case of 5 degrees, the averages of EF are 62.8±7.1, 63.6±7.5, 62.7±7.3% (p=0.903) in LAO, LAO -5° and LAO +5˚ respectively. And there is no difference in end diastole and end systole counts (p<0.05). In case of 10 degrees, the averages of EF are 65.5±9.0, 66.3±8.7, 63.5±.9.3% (p=0.473) in LAO, LAO -10° and LAO +10° respectively. And there is no difference in end diastole and end systole counts (p<0.05). Conclusion: When an image is nearly “Best septal” view, the difference of LAO angle would not affect to change LVEF. Although there was no difference in quantitative analysis, deviations could happen when to interpret wall motion qualitatively by reading physicians.

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키워드

Multi-gated cardiac blood pool scan left anterior oblique (LAO) ejection fraction (EF)