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Multiphase time-resolved contrast-enhanced portal MRA in normal dogs
1Rosenthal Imaging and Treatment Center, Section of Radiology, University of Pennsylvania School of Veterinary Medicine, 3900 Delancey Street, Philadelphia, PA 19104, USA. wmai@vet.upenn.edu
Summary
A new contrast-enhanced magnetic resonance angiography (CE-MRA) protocol enables rapid 3D imaging of the portal venous system in dogs. This fast, noninvasive technique aids in diagnosing portal vascular anomalies in small animals.
Area of Science:
- Veterinary Radiology
- Medical Imaging
Background:
- Portal vein anomalies are prevalent in canine and feline patients.
- Accurate diagnosis via imaging is crucial for effective treatment planning.
- Current imaging modalities for the portal system have limitations.
Purpose of the Study:
- To develop and evaluate a fast 3D contrast-enhanced magnetic resonance angiography (CE-MRA) protocol for imaging the splanchnic arterial and portal venous system in dogs.
- To assess the efficacy of CE-MRA in depicting normal canine portal vasculature.
Main Methods:
- A novel CE-MRA protocol was developed for rapid 3D imaging.
- Multiphase acquisition strategy was employed during a single breath-hold.
- Elliptical centric view ordering and parallel imaging techniques were utilized to optimize speed and coverage.
Main Results:
- The protocol achieved fast 3D imaging of the arterial splanchnic and portal venous system in normal dogs.
- Excellent signal was obtained for the portal venous phase.
- Detailed visualization of vascular anatomy, including afferent vessels and branches, was achieved.
Conclusions:
- 3D CE-MRA is a promising fast and noninvasive imaging method for diagnosing portal vascular anomalies in small animals.
- The developed protocol offers high spatial and temporal resolution for portal system assessment.
