2012年6月16日

CT contrast phase

視懷疑什麼病,決定CT要掃哪些phase
懷疑aortic dissection: Noncontrast + early arteriole phase
懷疑H.C.C: Noncontrast + late arteriole + portal vein + delayed phase
懷疑appendicitis: Noncontrast + venous phase
Early arteriole (25s): vascular lesion (ex: aortic aneurysm, dissection)
Late arteriole (35s): Hypervascular solid organ (liver, kidney, spleen, pancreas)

Portal vein(75s): H.C.C iso-/hypodense, portal vein thrombosis
Venous phase(90-120s): other solid organ(ex: appendicitis), IVC structure

Delayed phase(240s): H.C.C hypodense
Excretory phase, ex: CT urography(5 min)



張貼留言

您或許對這些文章有興趣:

Related Posts Plugin for WordPress, Blogger...