https://www.selleckchem.com/pr....oducts/dexketoprofen
Veins are thin-walled tubes. Their lumen is roughly circular with an aspect ratio close to 11 under physiologic pressures. When they collapse owing to decreased internal pressure or external compression, the aspect ratio changes. The vertical diameter is usually diminished more than the transverse, with a considerable decrease in the lumen area. The recent emergence of stent correction of many venous compression syndromes, particularly iliac vein stenosis, has brought attention to the importance of the aspect ratio, qui
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