ABC | Volume 111, Nº2, August 2018

Original Article Marino et al 123 I-MIBG Scintigraphy in Heart Failure Arq Bras Cardiol. 2018; 111(2):182-190 Figure 5 – Dispersion graph to assess the correlation between LVEF and late HMR in CCC or non-CCC or HT patients. Late HMR: ratio of the heart/mediastinum radioactive counts estimated on 180-minute images (late uptake); LVEF: left ventricular ejection fraction. (A) CCC: chronic Chagas cardiomyopathy; (B) non-CCC: cardiomyopathy etiology other than Chagas disease; (C) HT: heart transplant. 2.5 2.0 1.5 1.0 0.5 0.0 0 10 20 30 LVEF 40 50 60 70 80 2.5 2.0 1.5 1.0 0.5 0.0 0 10 20 30 LVEF 40 50 60 70 80 2.5 2.0 1.5 1.0 0.5 0.0 0 10 20 30 LVEF 40 50 60 70 80 late HMR A r = 0.42 (p = 0.045) r = 0.49 (p = 0.015) r = 0.10 (p = 0.679) late HMR = 1.1482 + 0.014xLVEF R 2 = 0.1745 late HMR = 1.1892 + 0.0097xLVEF R 2 = 0.2397 late HMR = 1.1158 + 0.0017xLVEF R 2 = 0.0111 late HMR late HMR B C Figure 6 – Dispersion graph to assess the correlation between LVEF and WO% of 123 I-MIBG in CCC or non-CCC or HT patients. CCC: chronic Chagas cardiomyopathy; LVEF: left ventricular ejection fraction. (A) CCC: chronic Chagas cardiomyopathy; (B) non-CCC: cardiomyopathy etiology other than Chagas disease; (C) HT: heart transplant. 0 10 20 30 LVEF 40 50 60 70 80 WO% A 0 10 20 30 LVEF 40 50 60 70 80 WO% B 0 10 20 30 LVEF 40 50 60 70 80 WO% C r = –0.06 (p = 0.774) WO% = 47.41 + 0.1806xLVEF R 2 = 0.004 r = –0.18 (p = 0.389) WO% = 56.105 + 0.333xLVEF R 2 = 0.0338 r = –0.01 (p = 0.971) WO% = 38.465 + 0.0288xLVEF R 2 = 0.0001 100.0 80.0 0.0 60.0 40.0 20.0 –20.0 –40.0 100.0 80.0 0.0 60.0 40.0 20.0 –20.0 –40.0 100.0 80.0 0.0 60.0 40.0 20.0 –20.0 –40.0 187