Mr Venography
Mr Venography - Related Videos
06:08
A Novel Method: Super-selective Adrenal Venous Sampling
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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
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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.
11:27
Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
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Cited by 5 •
2016
This protocol describes the preparation and characterization of a dendrimeric magnetic resonance imaging (MRI) contrast agent that carries cyclen-based macrocyclic chelates coordinating paramagnetic gadolinium ions. In a series of MRI experiments in vitro, this agent produced an amplified MRI signal when compared to the commercially available monomeric analogue.
09:02
Percutaneous Hepatic Perfusion (PHP) with Melphalan as a Treatment for Unresectable Metastases Confined to the Liver
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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.
13:04
Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells
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Cited by 13 •
2019
Cultured primary or established cell lines are commonly used to address fundamental biological and mechanistic questions as an initial approach before using animal models. This protocol describes how to prepare whole cell extracts and subcellular fractions for studies of zinc (Zn) and other trace elements with atomic absorbance spectroscopy.
FAQs
Flow-sensitive sequences are central because they emphasize the signal behavior of moving venous blood. That emphasis helps separate flowing blood from surrounding tissue, allowing MRV to represent venous pathways together with circulation. In practical terms, sequence selection determines how clearly the study displays vessels and blood movement, which directly affects assessment of venous anatomy and vascular physiology.
Gadolinium may enhance vein visibility when native flow-sensitive imaging does not provide enough separation from adjacent tissue. Its role is complementary rather than fundamental: magnetic fields, radiofrequency signals, and specialized sequences provide the imaging basis, while contrast can improve the distinction between vessels and surrounding structures. This option supports different clinical and biological imaging requirements.
MR venography obtains venous information without ionizing radiation, which distinguishes it from imaging approaches that depend on radiation exposure. This characteristic is relevant when researchers investigate venous anatomy or circulation in biological studies. The method instead derives its information from magnetic fields, radiofrequency signals, and flow-sensitive imaging, allowing vascular assessment through magnetic resonance principles.
An MRV study can provide two complementary kinds of information: the arrangement of veins and the behavior of venous blood flow. That combination helps investigators move beyond locating a vessel to evaluating whether thrombosis, sinus obstruction, vascular malformation, or another venous abnormality may be present. It also supports both biological research and clinical interpretation.
An examination combines magnetic-field imaging with radiofrequency signal detection and flow-sensitive sequences used to depict venous structures. Gadolinium may be added when enhanced vessel visibility is needed. Together, these components generate maps that distinguish flowing blood from adjacent tissue and support evaluation of the venous system. Optional contrast allows the acquisition to address different imaging questions.
Researchers and clinicians apply MRV across cerebral, abdominal, pelvic, and peripheral venous territories. The relevant region depends on the vascular question, while the same underlying approach can map venous anatomy and circulation in each area. This broad coverage makes the method useful for investigating localized abnormalities as well as wider patterns of venous organization and blood flow.
Thrombosis and sinus obstruction are important targets because each can affect venous circulation. MRV can also reveal vascular malformations and other abnormalities, providing anatomical and flow-related information for interpretation. These findings may support diagnosis and treatment planning, while also contributing evidence about how venous structures function within a biological system.
In biology, MRV links structural observation with investigation of vascular physiology. Mapping where veins lie while assessing venous blood flow allows studies to relate anatomical organization to circulation rather than treating vessels as isolated structures. In clinical research, the same information supports diagnosis, treatment planning, and examination of abnormalities across multiple venous territories.