Gadolinium-enhanced Magnetic Resonance Angiography, Digital Subtraction Angiography and Duplex of the Iliac Arteries Compared with Intra-arterial Pressure Gradient Measurements

Autor: Sadettin Karacagil, Johan Wikström, Lars Johansson, Håkan Ahlström, A. Holmberg, Anne-Marie Löfberg, Örjan Smedby
Jazyk: angličtina
Předmět:
Gadolinium DTPA
medicine.medical_specialty
Contrast Media
Arterial Occlusive Diseases
Blood Pressure
Gadolinium
Iliac Artery
Sensitivity and Specificity
DSA
Magnetic resonance angiography
law.invention
law
Monitoring
Intraoperative
Catheterization
Peripheral
medicine
Humans
Prospective Studies
cardiovascular diseases
Pressure measurement
Pressure gradient
Aged
Aged
80 and over
Medicine(all)
Ultrasonography
Doppler
Duplex
medicine.diagnostic_test
business.industry
Iliac artery
Angiography
Digital Subtraction
Blood Pressure Determination
Digital subtraction angiography
Middle Aged
eye diseases
Duplex
medicine.anatomical_structure
Blood pressure
Duplex (building)
Injections
Intravenous
Angiography
cardiovascular system
MRA
Surgery
Radiology
Cardiology and Cardiovascular Medicine
business
Magnetic Resonance Angiography
Artery
circulatory and respiratory physiology
Zdroj: European Journal of Vascular and Endovascular Surgery. (5):516-523
ISSN: 1078-5884
DOI: 10.1053/ejvs.1999.1083
Popis: 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.
Databáze: OpenAIRE
Externí odkaz: