Determinants of coronary artery compliance in subjects with and without angiographic coronary artery disease
James A. Shaw, MBBS,
Bronwyn A. Kingwell, PhD,
Anthony S. Walton, FRACP,
James D. Cameron, MD, M Eng Sc,
Prakash Pillay, MBBS,
Christoph D. Gatzka, MD and
Anthony M. Dart, FRCP, DPhil*
View larger version (97K):
[in a new window]
|
Figure 1 Intravascular ultrasound images in diastole (right) and systole (left). The inner tracing marks the lumen-intima boundary, and the outer tracing the outer margin of the intima-media layer. Plaque area was calculated as the difference between these areas. Plaque cross-sectional area decreased from 7.8 mm2 during diastole to 6.9 mm2 during systole.
|
|
View larger version (22K):
[in a new window]
|
Figure 2 The figure shows plaque area measured during diastole (gray bar) and systole (black bar) in the proximal and distal left anterior descending artery (LAD) and in the proximal circumflex (Cx). *p < 0.05, **p < 0.01 for the difference between systole and diastole.
|
|
View larger version (24K):
[in a new window]
|
Figure 3 The figure shows the relation between cross-sectional compliance and plaque compression (+ve values indicate smaller systolic than diastolic plaque area). Cx = circumflex artery; LAD = left anterior descending artery.
|
|
|
