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Gadolinium-enhanced...
Gadolinium-enhanced magnetic resonance angiography, digital subtraction angiography and duplex of the iliac arteries compared with intra-arterial pressure gradient measurements
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- Wikström, Johan (författare)
- Uppsala universitet,Institutionen för onkologi, radiologi och klinisk immunologi,Enheten för radiologi,RAD
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- Holmberg, A. (författare)
- Uppsala universitet,Institutionen för kirurgiska vetenskaper,Vascular Surgery
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- Johansson, Lars (författare)
- Uppsala universitet,Institutionen för onkologi, radiologi och klinisk immunologi,Enheten för radiologi,RAD
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- Löfberg, Anne-Marie (författare)
- Uppsala universitet,Institutionen för onkologi, radiologi och klinisk immunologi,RAD
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- Smedby, Örjan (författare)
- Uppsala universitet,Institutionen för onkologi, radiologi och klinisk immunologi,RAD
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- Karacagil, Sadettin (författare)
- Uppsala universitet,Institutionen för kirurgiska vetenskaper,Vascular Surgery
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- Ahlström, Håkan (författare)
- Uppsala universitet,Institutionen för onkologi, radiologi och klinisk immunologi,Enheten för radiologi,RAD
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(creator_code:org_t)
- Elsevier BV, 2000
- 2000
- Engelska.
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Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier BV. - 1078-5884 .- 1532-2165. ; 19:5, s. 516-523
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- PURPOSE: to compare gadolinium-enhanced magnetic resonance angiography (Gd-MRA), digital subtraction angiography (DSA) and duplex of the iliac arteries with intra-arterial pressure gradient measurement as the reference method. MATERIALS AND METHODS: Gd-MRA, DSA and duplex examinations of the iliac arteries were performed in 30 patients (60 arteries) with lower-limb arterial occlusive disease. In 29 arteries, pressure measurements were made (n=25) or the artery was found to be occluded on catheterisation (n=4). An aortofemoral peak systolic pressure gradient of 20 mmHg or more was regarded as haemodynamically significant. Stenoses with a diameter reduction of 50% or more on MRA or DSA, or an increase in peak systolic velocity greater than 150% (duplex) were considered significant. MRA examinations were evaluated by means of maximum intensity projections (MRA-MIP) and using source images and curved multiplanar reconstruction (MRA-MPR). RESULTS: the sensitivity (specificity) for a significant iliac artery stenosis were 81% (75%) for MRA-MIP, 76% (75%) for MRA-MPR, 86% (88%) for DSA, and 72% (88%) for duplex. CONCLUSION: with intra-arterial pressure measurements as the reference method, similar results were achieved with Gd-MRA, DSA and duplex concerning the detection of haemodynamically significant iliac artery stenoses. The use of source images and multiplanar reconstructions resulted in higher accuracy for the detection of occlusions.
Nyckelord
- MRA
- Gadolinium
- DSA
- Duplex
- Pressure measurement
- Iliac artery
- MEDICINE
- MEDICIN
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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