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High-resolution magnetic resonance angiography of hands with timed arterial compression (tac-MRA)

Klaus U Wentz1, Johannes M Fröhlich, Constantin von Weymarn

  • 1MR Research Group, Institute of Radiology, Cantonal Hospital, Winterthur, Switzerland. ku.wentz@ksw.ch

Lancet (London, England)
|January 9, 2003
PubMed

Timed arterial compression (tac) of blood flow can be achieved by inflation of a blood-pressure cuff. We postulated that this technique might improve contrast-enhanced magnetic resonance angiography (MRA) of the arteries of the hands. We studied eight volunteers and six patients with occlusive arterial disease of the hands with standard MRA and tac-MRA. Compared with standard MRA, acquisition time was extended with the blood-pressure cuff by a factor of four, leading to quadrupled image resolution (512x1024). Furthermore, flow-related artifacts were not seen. Tac-MRA permits visualisation of the peripheral arterial system in finer detail than that achieved with standard MRA.

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