- Poster presentation
- Open Access
Continuous table movement for peripheral MRA with matrix coils at 3.0 T
© Kramer et al; licensee BioMed Central Ltd. 2009
- Published: 28 January 2009
- Peripheral Arterial Occlusive Disease
- Matrix Coil
- Fontaines Stage
- Contrast Agent Bolus
- Reconstructed Voxel Size
To compensate for the restricted field of view (FoV) of standard MRA systems for larger anatomical areas such as the peripheral arteries of the lower body part, a multistep approach was introduced and successfully implemented for MRA of the lower limb. However, even concepts of a sequential multi-step MRA with a double CA bolus include several disadvantages. The planning and separate data acquisition of multiple steps for both non-enhanced and contrast enhanced imaging is time consuming. To face and overcome these limitations, a novel technique for continuous table movement and data acquisition for MRA has been introduced at 3.0 Tesla.
To compare a standard step-by-step and a newly developed continuous table movement (ct) technique for peripheral MRA at a 3.0 Tesla MR System equipped with a matrix coil system.
All datasets could be evaluated. Due to the absence of multiple localizers and subtraction masks examination time was considerably shorter when using the ct-MRA technique. Relevant findings detected by step-by-step MRA were also detected by ct-MRA. Different results between step-by-step MRA and ct-MRA occurred in the differentiation between no vessel-wall changes/slight atherosclerotic changes and high grade stenosis/occlusion respectively.
MRA with continuous table movement is an easy applicable technique for imaging peripheral vessels without the need for planning different steps and FOV positioning, thus examination time can be reduced considerably. However, the slightly reduced spatial resolution compared to standard step-by-step MRA is a drawback especially in the most distal calf vessels.
This article is published under license to BioMed Central Ltd.