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[Three-phase gadolinium infusion in moving-table three-dimensional MR angiography]
1Department of Radiology, Seichokai Fuchu Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|February 3, 2000
Summary
This study introduces a new three-phase gadolinium infusion method for three-dimensional MR angiography. It effectively visualizes peripheral arteries without deep vein superimposition, improving diagnostic accuracy.
Area of Science:
- Medical Imaging
- Radiology
- Vascular Imaging
Background:
- Moving-table three-dimensional (3D) MR angiography visualizes long arterial segments.
- Challenges include deep vein superimposition below the knee and poor visualization of peripheral arteries.
Purpose of the Study:
- To develop an improved MR angiography technique for enhanced peripheral artery visualization.
- To overcome limitations of current methods, specifically venous superimposition and incomplete peripheral artery imaging.
Main Methods:
- A novel three-phase gadolinium infusion protocol was developed.
- Infusion timing was adjusted based on leg mean blood flow velocity.
- Nineteen patients with diverse blood flow velocities were evaluated.
Main Results:
- Eighteen out of nineteen patients exhibited no deep venous superimposition.
- All nineteen patients demonstrated good peripheral artery configuration.
- Optimal visualization was achieved using 16-18 ml of gadolinium.
Conclusions:
- The proposed three-phase gadolinium infusion method significantly enhances peripheral artery visualization in MR angiography.
- This technique effectively eliminates venous superimposition, improving diagnostic utility for lower limb vascular assessment.