Superior vena cava | Radiology Reference Article - Radiopaedia.org
2021年9月15日 · The superior vena cava (SVC) is a large valveless venous channel formed by the union of the brachiocephalic veins. It receives blood from the upper half of the body (except the heart) and returns it to the right atrium.
Superior Vena Cava Obstruction Evaluation With MDCT - AJR
Regardless of its cause, the CT diagnosis of superior vena cava obstruction includes lack of opacification of the superior vena cava, an intraluminal filling defect or severe narrowing of the superior vena cava, and visualization of collateral vascular channels .
Superior vena cava obstruction | Radiology Reference Article ...
2024年12月18日 · Enhanced CT shows the location and severity of the superior vena cava obstruction, superimposed thrombosis, a mediastinal mass or lymphadenopathy, collateral vessels, and associated lung masses. A focal hepatic hot spot sign may be visible. There may also be pseudopathologic vertebral enhancement due to intraosseous collateral venous flow 9.
In patients with suspected supe-rior vena cava syndrome, MDCT has the un-paralleled advantage of “one-stop shopping,” combining cross-sectional imaging for diag-nosis of the cause of the superior vena cava obstruction with multiplanar reformation that best delineates the level and extent of venous obstruction and is invaluable to the surgeon, ra...
Superior Vena Cava Syndrome - PMC
CT scan of superior vena cava syndrome. (A) Axial CT image shows contrast injected from the arm traveling into the azygous vein. (B) Coronal reformatted CT image shows narrowing and clot surrounding the distal catheter.
Comprehensive Imaging Review of the Superior Vena Cava
2015年10月9日 · The superior vena cava (SVC) is the largest central systemic vein in the mediastinum. Imaging (ie, radiography, computed tomography [CT], magnetic resonance [MR] venography, and conventional venography) plays an important role in identifying congenital variants and pathologic conditions that affect the SVC.
CT Venography of Superior Vena Cava | SpringerLink
2024年12月27日 · Researchers have conducted several studies on CTV technology of SVC, mainly through injection of low concentrations of contrast agent and delayed CT scanning to acquire images: 1. A total of 120 mL of diluted contrast medium (75 mg I/mL) is injected into the bilateral antecubital vein at a rate of 2 mL/s.
CT diagnosis of superior vena cava syndrome: importance of
2013年1月19日 · The presence of collateral vessels, regardless of the number and location of the vessels shown on CT scans, was highly accurate as a predictor of superior vena cava syndrome, with a sensitivity of 96% and a specificity of 92%.
Superior Vena Cava Syndrome Imaging - Medscape
2021年4月26日 · Diagnosis of SVC thrombosis by CT includes lack of SVC enhancement; intraluminal filling defects or narrowing; and visualization of the collateral vessels. The modality of choice for SVCS is...
Computed tomography of the superior vena cava - PubMed
The superior vena cava (SVC) can be visualized and reliably evaluated by computed tomography (CT). Opacification of this vessel with iodinated contrast material and multiplanar reformations can provide information concerning the patency of the lumen and the relationship of the SVC with adjacent medi …