Venography
Venography - Related Videos
06:08
A Novel Method: Super-selective Adrenal Venous Sampling
0 Views •
Cited by 44 •
2017
'Super-selective' adrenal venous sampling (ssAVS, also called segmental adrenal venous sampling: sAVS) was performed using a micro-catheter to identify adrenal segment(s) that produce excessive amounts of hormones. The ssAVS technique was described, cases in which adrenal segmental lesion(s) were identified by ssAVS were presented, and the usefulness of ssAVS in future adrenal research was discussed.
06:59
Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
0 Views •
2025
Pulmonary vein stenosis (PVS) is a life-threatening complication of fibrosing mediastinitis (FM), with a poor prognosis if not properly treated. Currently, catheter-based endovascular angioplasty is a promising therapeutic strategy for FM-associated PVS. This protocol primarily outlines a stepwise approach to the transcatheter procedure for FM-associated PVS.
09:02
Percutaneous Hepatic Perfusion (PHP) with Melphalan as a Treatment for Unresectable Metastases Confined to the Liver
0 Views •
Cited by 12 •
2016
In this manuscript, we describe percutaneous isolated hepatic perfusion with simultaneous chemofiltration as treatment for unresectable liver metastases. This procedure is performed under general anaesthesia in the angiosuite by an experienced team, consisting of an interventional radiologist, a clinical perfusionist and anaesthesiologist.
11:03
Direct Pressure Monitoring Accurately Predicts Pulmonary Vein Occlusion During Cryoballoon Ablation
0 Views •
Cited by 18 •
2013
Effective pulmonary vein isolation utilizing a cryoballoon depends on complete pulmonary vein occlusion. The point of occlusion can be effectively predicted by direct analysis of pulmonary vein pressure waveform analysis during balloon inflation using a simple and reproducible technique.
FAQs
A radiopaque contrast agent makes the venous pathway visible on sequential X-ray images as it moves through the vessels. Tracking this movement helps clinicians assess venous blood flow and identify areas where the pathway may be obstructed or narrowed. The contrast-enhanced view can therefore provide anatomical and flow information that may be difficult to establish from symptoms or preliminary evaluation alone.
Venography can help evaluate several causes of abnormal venous findings, including obstruction, narrowing, malformations, and thrombosis. Sequential imaging shows how contrast passes through the venous system, while the resulting anatomy can clarify whether the concern involves altered vessel structure or impaired passage. This distinction supports more focused diagnostic assessment and helps clinicians understand the extent of venous involvement.
Conventional venography uses contrast injection followed by sequential X-ray imaging, whereas computed tomography and magnetic resonance techniques offer alternative ways to view the venous system. These approaches can provide different perspectives on venous anatomy and blood flow. Their inclusion in clinical evaluation expands the available imaging options when clinicians need additional information beyond a conventional venographic examination.
The procedure begins with injection of a radiopaque contrast agent into a vein. Clinicians then obtain sequential X-ray images while the contrast moves through the venous system. Reviewing this series allows them to follow venous blood flow and examine the anatomy for obstruction, narrowing, malformation, or thrombosis. The workflow is designed to connect contrast movement with the suspected vascular problem.
Clinicians may consider venography when noninvasive ultrasound findings are inconclusive and the venous abnormality remains uncertain. In that setting, contrast-enhanced sequential imaging can provide additional information about venous anatomy and flow. This is particularly relevant when evaluating suspected deep vein thrombosis, chronic venous disease, or vascular abnormalities that require clearer characterization for clinical decision-making.
Venographic images can clarify venous anatomy before or during treatment, allowing clinicians to relate a suspected abnormality to the surrounding venous pathway. The information may assist planning for conditions such as deep vein thrombosis, chronic venous disease, or vascular abnormalities. Because the images show the course of contrast through the veins, they can also help guide interventions when procedural anatomical detail is needed.