从左到右依次排列着粥样硬化的左冠状动脉的前降支从近端到远端的横断面，左边的近端冠状动脉内腔更狭窄，粥样硬化更严重。动脉粥样硬化一般是在动脉的起始部位较严重，因为这里湍流更大。
These cross sections of the left anterior descending coronary artery demonstrate more pronounced atherosclerosis with narrowing at the left, which is the proximal portion of this artery. Atherosclerosis is generally worse at the beginning of an artery where turbulence is greater.