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Figure 7 Aortic valve with volume rendering technique (VRT) (A) versus multiplanar reformation (B): aortic valve area appeared split and was calculated by the addition of both area 1 (A1) and area 2 (A2). White arrow denotes aortic valve calcification, which can be displayed better with VRT. LCC = left coronary cusp; NCC = non-coronary cusp; RCC = right coronary cusp.