Predicting the Clinical Course in Hypertrophic Cardiomyopathy Using Thallium-201 Myocardial Scintigraphy

Figure 1. (A) Continuous changes in thallium‐201 myocardial scintigraphy and (B) left ventricular division into five regions on bull's‐eye polar map. (A) The data examined at different examinations. Column ① was the data at the first examination, and columns ②, ③, and ④ were the data at 2, 6, and 8 years after the first examination, respectively. (B) The five segments that are divided to confirm the site of the lesion. SD, standard deviation.

Figure 2. Incidence of the region with areas of uptake >2 standard deviations (SDs). The incidence of the site of the lesion. The apex region was most frequently affected, and its incidence was significantly higher than that of the septal, anterior, and lateral regions.

Figure 3. Continuous changes in (A) thallium‐201 myocardial scintigraphy, (B) total 12‐lead QRS voltage, and (C) short‐axial echocardiogram. In each figure, ① corresponds the first examination, and ⑥, ⑪, and ④ in (A)–(C) correspond to the last examination. Over time, the uptake of thallium‐201, total 12‐lead QRS voltage, and wall thickness gradually decreased. LV, left ventricle; RV, right ventricle.

Figure 4. (A) Correlation between extent score and mean count change and (B) comparisons of mean count change (upper panel) and extent score (lower panel) between Groups A and B. As shown in (A), there was a significant correlation between extent score and mean count change. As shown in (B), both the mean count change and the extent score were significantly greater in Group A than in Group B, but an overlap between both groups was greater in the extent score than in the mean count change.

Figure 5. Comparisons of cardiovascular complications between patients with and without left ventricular heart failure. The incidence of atrial fibrillation and apoplexy was significantly higher in patients with left ventricular heart failure. AVR, aortic valve replacement; ICD, implantable cardioverter defibrillator; MVR, mitral valve replacement; PM, pacemaker.