Cardiac-gated MR angiography of the entire lower extremity: a prospective comparison with conventional angiography.

Glickerman, David J.; Obregon, Richard G.; Schmiedl, U P; Harrison, Scott; Macaulay, Shane E.; Simon, Howard; Kohler, Ted R.

doi:10.2214/ajr.167.2.8686623

Cited by 44 publications

(11 citation statements)

References 13 publications

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“…Noninvasive evaluation of the arterial tree with two-dimensional inflow MR angiography is well described (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23). Because of their reliance on inflow phenomena, time-of-flight images are prone to saturation effects with resultant artifactual stenosis or overestimation of the degree of stenosis in areas where vessels run a more horizontal course, such as in the pelvis and around the proximal anterior tibial artery (14,22).…”

Section: Discussionmentioning

confidence: 99%

“…Although noninvasive evaluation of the lower limb arteries is possible with twodimensional time-of-flight imaging, this technique is susceptible to artifacts from inplane saturation and is costly because of the long examination time, and therefore, it is not widely available (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23). Recent advances in gadolinium-enhanced three-dimensional (3D) magnetic resonance (MR) angiography have facilitated rapid, high-definition imaging of the arterial tree during the arterial phase by using a gadolinium chelate bolus (24,25).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Stepping-Table Gadolinium- enhanced Digital Subtraction MR Angiography of the Aorta and Lower Extremity Arteries: Preliminary Experience

Meaney¹,

Ridgway²,

Chakraverty³

et al. 1999

Radiology

312

221

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Stepping-Table Gadolinium- enhanced Digital Subtraction MR Angiography of the Aorta and Lower Extremity Arteries: Preliminary Experience

Meaney¹,

Ridgway²,

Chakraverty³

et al. 1999

Radiology

312

221

View full text Add to dashboard Cite

show abstract

“…Although early experience with time-of-flight (TOF) MRA was encouraging [5,6,7,8,9,10,11], scan times were long and artefacts were common; however, using TOF MRA as the sole pre-operative test for patients undergoing bypass procedures, Carpenter et al reported cost savings of US$1288 per patient, implying that MRA is a cost-effective option compared with DSA in institutions where it can be performed [6], so there are strong reasons for striving to improve the diagnostic quality of this method.…”

Section: Introductionmentioning

confidence: 99%

Gadobutrol-enhanced moving-table magnetic resonance angiography in patients with peripheral vascular disease: a prospective, multi-centre blinded comparison with digital subtraction angiography

Hentsch¹,

Aschauer

Balzer

et al. 2003

Eur Radiol

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The purpose of this study was to compare moving-table three-dimensional contrast-enhanced magnetic resonance angiography (CE MRA), using 1.0-mol gadobutrol, with intra-arterial digital subtraction angiography (i.a. DSA) for evaluation of pelvic and peripheral arteries in patients with peripheral arterial occlusive disease. A total of 203 patients were examined in a prospective, multi-centre study at 1.0/1.5 T. Ten vessel segments of one leg were evaluated on-site and by three independent blinded reviewers off-site. One hundred eighty-two patients were evaluable in blinded reading. For pelvis and thigh, there was statistically significant diagnostic agreement between CE MRA and i.a. DSA on-site (94%) and off-site (86-88%). Overall, for detection of clinically significant stenoses, 93% sensitivity and 90% specificity were achieved in on-site evaluation, with 71-76 and 87-93% off-site; for detection of occlusion, sensitivity and specificity on-site were 91 and 97%, with 75-82 and 94-98% off-site. Evaluation was more sensitive on-site than off-site for detection of stenoses and occlusion, whereas specificity was similar. The CE MRA with 1.0-mol gadobutrol gave results comparable to those of i.a. DSA for the larger arteries of pelvis and thigh. Results for calf arteries were compromised by spatial resolution and technical limitations.

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“…However, Owen et al [3] found that runoff vessels not depicted by DSA were diagnosed to be patent by non-enhanced 2D TOF MR angiography. In the study presented by Glickerman et al [15] the sensitivity in detecting runoff vessels was 86 %, whereas another study [6] reported sensitivity between 90 and 92 %, depending on the site and severity of the disease.…”

Section: Discussionmentioning

confidence: 93%

“…However, experience in imaging peripheral vascular bypass grafts has been very limited. Glickerman et al [15] included in their report three peripheral bypass grafts, using a cardiac-gated 2D TOF technique. The results were discouraging: One bypass graft could not be visualized; in another, a stenosis was overscored; and the third showed artifacts due to metallic clips.…”

Section: Discussionmentioning

confidence: 99%

Contrast-enhanced magnetic resonance angiography in the evaluation of peripheral bypass grafts

et al. 2000

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The aim of this study was to determine the potential of contrast-enhanced magnetic resonance (MR) angiography in the evaluation of peripheral bypass grafts. Digital subtraction angiography (DSA) served as a standard of reference. Thirty-five patients with previous bypass graft surgery underwent DSA and contrast-enhanced MR angiography within 2 weeks. MR angiography was performed using a three-dimensional fast gradient-echo sequence after administration of gadopentetate dimeglumine. Every leg was divided into 11 segments and scored in five categories of stenosis. MR angiography findings were compared with those of DSA. A total of 38 bypass grafts and 454 segments in 27 patients were included in the evaluation. In 33 (87%) bypass grafts stenosis grading with both methods corresponded, and in 5 (13%) cases stenosis was overestimated on MR angiography. Agreement in detection of hemodynamically significant stenosis (stenosis =50%) was 94.7% with a sensitivity of 100% and a specificity of 91.3%. In 340 (83.0%) vascular segments there was conformity in graduation, in 69 (16.88%), there was a difference of one or more grades on MR angiograms. Forty-four segments (9.6%) were not assessable due to technical limitations. Contrast-enhanced MR angiography is an useful noninvasive tool in the detection of failing peripheral vascular bypass grafts.

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Cardiac-gated MR angiography of the entire lower extremity: a prospective comparison with conventional angiography.

Cited by 44 publications

References 13 publications

Stepping-Table Gadolinium- enhanced Digital Subtraction MR Angiography of the Aorta and Lower Extremity Arteries: Preliminary Experience

Stepping-Table Gadolinium- enhanced Digital Subtraction MR Angiography of the Aorta and Lower Extremity Arteries: Preliminary Experience

Gadobutrol-enhanced moving-table magnetic resonance angiography in patients with peripheral vascular disease: a prospective, multi-centre blinded comparison with digital subtraction angiography

Contrast-enhanced magnetic resonance angiography in the evaluation of peripheral bypass grafts

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