Question 問題：

Chronic postthrombotic change is the radiographic term for residual material and wall thickening that remains in the vein after an acute DVT. How is it differentiated from an acute DVT on ultrasound??

慢性栓塞后改變是對(duì)急性DVT后靜脈內(nèi)殘留物和靜脈壁變厚的放射學(xué)術(shù)語。如何從超聲影像鑒別急性和慢性DVT？

Answer 答案：

The material is not thrombus and may be differentiated from acute DVT as it is rigid and nondeformable with compression, irregular surfaces, and integrates into the vein wall.?

殘留物并不是血栓，它可以與急性DVT通過下列特征區(qū)別：質(zhì)硬，加壓后不變形，邊緣不規(guī)則，并與靜脈壁融合。

參考文獻(xiàn)：

JACEP Open. 2020;1:1128