The number of defects in initial supine imaging by myocardial regions for male (left) and female patients (right). The numbers of defects that disappeared in prone imaging are in parentheses. Of the 26 defects seen in the male population (left circle), 22 (85%) were seen in the inferior wall, 3 (12%) were apical defects and only 1 was in the anterior region of the left ventricle. Of the 22 inferior defects, 14 (64%) disappeared in the prone position and of the 3 apical defects 1 disappeared. The anterior defect persisted in prone position. Of the 37 defects seen in the female population (right circle) 16 (43%) were seen in the anterior wall, 11 (30%) were located apically and 9 (24%) were inferior defects. In the female population most defects disappeared in the inferior wall, 8 out of 9 (89%), 8 of the 11 apical defects also disappeared (73%) but only 6 of the 16 anterior defects disappeared (38%). The one septal defect persisted.