Abstract:Pressure measurements remain the gold standard for aortoiliac examination, arteriography providing only morphological information. The limitations of femoral pulse palpation should be appreciated. Although MRA was faster, Duplex examination proved slightly more sensitive to stenoses. At present, colour Duplex provides the best non-invasive assessment of aortoiliac disease and could prevent unnecessary arteriograms.
“…Duplex ultrasound also has broad clinical utility for evaluation of aneurysms, arterial dissection, popliteal artery entrapment syndrome, evaluation of lymphoceles, and assessment of soft tissue masses in individuals with vascular disease. Although duplex ultrasound includes images, either in black and white or color format, the primary clinically relevant information derived from duplex studies has been validated from analysis of the velocity of blood flow (201)(202)(203)(204)(205)(206)(207)(208)(209). Quantitative criteria used to diagnose stenoses are based on peak systolic velocity and peak systolic velocity ratios within or beyond the stenosis compared with the adjacent upstream segment, the presence or absence of turbulence, and preservation of pulsatility.…”
“…Duplex ultrasound also has broad clinical utility for evaluation of aneurysms, arterial dissection, popliteal artery entrapment syndrome, evaluation of lymphoceles, and assessment of soft tissue masses in individuals with vascular disease. Although duplex ultrasound includes images, either in black and white or color format, the primary clinically relevant information derived from duplex studies has been validated from analysis of the velocity of blood flow (201)(202)(203)(204)(205)(206)(207)(208)(209). Quantitative criteria used to diagnose stenoses are based on peak systolic velocity and peak systolic velocity ratios within or beyond the stenosis compared with the adjacent upstream segment, the presence or absence of turbulence, and preservation of pulsatility.…”
“…29,30,32,40,41,54,57,60,61 In addition, 46 studies that did not meet the inclusion criteria for the review of diagnostic accuracy reported results relating to adverse events. 78,80, …”
Section: Adverse Eventsmentioning
confidence: 99%
“…One study evaluated 2D PC MRA, 66 11 evaluated 2D TOF MRA, 22,27,29,32,40,41,53,55,64,69,74 and 14 evaluated CE MRA. 9,28,36,46,49,51,53,61,65,67,68,70,73,76 There were no studies providing results for the assessment of 3D TOF MRA.…”
Section: Mramentioning
confidence: 99%
“…The 11 studies evaluating 2D TOF MRA 22,27,29,32,40,41,53,55,64,69,74 provided a total of 22 data sets. The results are reported by the anatomy assessed and the full set of diagnostic accuracy results is presented in Table 5.…”
Section: D Tof Mramentioning
confidence: 99%
“…29,34,37,39,48,53,71 The sensitivity of DUS ranged from 81% (specificity 100%) to 100% (specificity 94%). The specificity ranged from 94% (for two studies with sensitivities of 90% and 100%) to 100% (for three studies with sensitivities of 81%, 97% and 99%).…”
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Magnetic resonance angiography is highly accurate for assessment of the entire lower extremity for arterial disease. Three-dimensional Gd-enhanced MRA improves diagnostic performance compared with 2-D MRA.
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