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Abdominal magnetic resonance venography.
1Department of Radiology, New England Deaconess Hospital, Boston MA 02215.
Cardiovascular and Interventional Radiology
|January 1, 1992
Summary
Noninvasive abdominal magnetic resonance venography using fast imaging techniques eliminates the need for contrast agents. This method effectively assesses abdominal vein patency and flow, aiding in diagnosing conditions like portal disease and venous occlusions.
Area of Science:
- Medical Imaging
- Radiology
- Vascular Imaging
Background:
- Advancements in fast gradient-echo imaging enable noninvasive abdominal magnetic resonance venography.
- Traditional venography often requires contrast agents, posing potential risks.
Purpose of the Study:
- To highlight the application of 2D time-of-flight magnetic resonance venography for abdominal veins.
- To demonstrate the noninvasive assessment of venous patency and flow without contrast agents.
Main Methods:
- Utilized two-dimensional, time-of-flight (2D TOF) angiographic techniques.
- Acquired sequential, single-slice images during breath-holding, postprocessed into projected venograms.
- Employed presaturation schemes, bolus-tracking, or phase imaging for hemodynamic information.
Main Results:
- Successfully performed abdominal magnetic resonance venography noninvasively.
- Demonstrated routine applicability in patients with portal disease and suspected venous occlusions (IVC, iliac, renal).
- Validated the assessment of surgical portosystemic shunt integrity.
Conclusions:
- Noninvasive abdominal magnetic resonance venography is a viable alternative to contrast-enhanced methods.
- This technique provides crucial information on abdominal venous system patency, flow, and shunt integrity.
- Offers a safe and effective diagnostic tool for various vascular conditions.