Related Experiment Videos
[Contrast media-enhanced 3D MR angiography of the peripheral vessels using a "tracking technique": preliminary
R Vosshenrich1, E Castillo, L Kopka
1Abt. Röntgendiagnostik I, Georg-August-Universität, Göttingen.
Purpose:
A single bolus contrast-enhanced (CE) 3D MR angiography (MRA) of the peripheral vessels was evaluated using a combination of two surface coils with manual incrementation of the patient table.
Methods:
Fifteen patients with peripheral arterial occlusive disease were examined using an ultrafast CE 3D MRA (TR/ TE/FA 5 ms/2 ms/30 degrees). For imaging of the vessels from the distal aorta to the arteries of the lower limbs a combination of a body-array coil and a flexible extremity coil was applied. A coil-interface was designed for a connection of the two coils. The examinations were performed after a single bolus of 0.15 mmol Gd-DTPA/kg. The tracking technique included a manual incrementation of the patient table and the coil-interface had to be switched from the body-array coil to the flexible extremity coil. For acquisition delay measurement of the MR sequence the individual transit times of the contrast material were detected by using a test bolus.
Results:
CE 3D MRA was technically successful in 14/15 cases. In one case two vascular segments were not imaged. The qualitative evaluation of all vascular segments documented a high quality without any significant differences between the proximal and the distal arteries (p < 0.05). All hemodynamically significant stenoses (n = 15) and all vessel occlusions (n = 36) were detected.
Conclusion:
The single bolus CE 3D MRA using a tracking technique is a favourable method in the evaluation of patients with peripheral arterial occlusive disease.
Insights
Single bolus contrast-enhanced 3D MR angiography (MRA) effectively evaluates peripheral arterial occlusive disease. This technique accurately detects stenoses and occlusions in lower limb arteries, offering a favorable diagnostic approach.
Area of Science:
- Radiology
- Medical Imaging
Context:
- Peripheral arterial occlusive disease (PAOD) significantly impacts lower limb circulation.
- Accurate imaging is crucial for diagnosing PAOD and guiding treatment.
- Conventional angiography carries risks, necessitating less invasive alternatives.
Purpose:
- To evaluate a single bolus contrast-enhanced (CE) 3D MR angiography (MRA) technique for peripheral vessels.
- To assess the efficacy of combining two surface coils with manual patient table incrementation.
- To determine the diagnostic performance of this CE 3D MRA method in patients with PAOD.
Summary:
- Fifteen patients with PAOD underwent ultrafast CE 3D MRA using a body-array and flexible extremity coil combination.
- A single bolus of gadolinium contrast agent was administered, with manual table incrementation for tracking.
- The technique achieved technical success in 14/15 cases, with high-quality imaging of proximal and distal arteries.
Impact:
- CE 3D MRA successfully identified all hemodynamically significant stenoses and vessel occlusions.
- The method demonstrated high diagnostic accuracy for PAOD evaluation.
- This single bolus CE 3D MRA approach is a favorable, non-invasive method for assessing peripheral arterial disease.