There is wash out of contrast in all abdominal structures except for fibrotic tissue, because fibrotic tissue has a poor late wash out and will become relatively dense compared to normal tissue. Sometimes called "wash out phase" or "equilibrium phase". Only in this phase you will be able to detect small renal cell carcinomas. This is when all of the renal parenchyma including the medulla enhances. In this phase the liver parenchyma enhances through bloodsupply by the portal vein and you should see already some enhancement of the hepatic veins. Although hepatic phase is the most accurate term, most people use the term "late portal phase". Hepatic or late portal phase - 70-80 sec p.i.All structures that get their bloodsupply from the arteries will show optimal enhancement. Sometimes also called "arterial phase" or "early venous portal phase", because some enhancement of the portal vein can be seen. This is the phase when the contrast is still in the arteries and has not enhanced the organs and other soft tissues. Non-enhanced CT (NECT) Helpful in detecting calcifications, fat in tumors, fat-stranding as seen in inflammation like appendicitis, diverticulitis, omental infarction etc.Scroll through the images to see the enhancement in the different phases. So it is important to know in which phase a CT should be performed depending on the pathology that you are looking for. Sometimes a lesion will be hypovascular compared to the normal tissue and in some cases a lesion will be hypervascular to the surrounding tissue in a certain phase of enhancement. The purpose of contrast-enhanced CT (CECT) is to find pathology by enhancing the contrast between a lesion and the normal surrounding structures. White Matter Lesions - Differential diagnosis.
#TOMOGRAFIA RENAL CON CONTRASTE HOW TO#
How to Differentiate Carotid Obstructions.TI-RADS - Thyroid Imaging Reporting and Data System.Esophagus II: Strictures, Acute syndromes, Neoplasms and Vascular impressions.Esophagus I: anatomy, rings, inflammation.Vascular Anomalies of Aorta, Pulmonary and Systemic vessels.Contrast-enhanced MRA of peripheral vessels.Ischemic and non-ischemic cardiomyopathy.Coronary Artery Disease-Reporting and Data System.Bi-RADS for Mammography and Ultrasound 2013.Transvaginal Ultrasound for Non-Gynaecological Conditions.Acute Abdomen in Gynaecology - Ultrasound.Appendicitis - Pitfalls in US and CT diagnosis.
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