Breath-hold ultrafast three-dimensional gadolinium-enhanced MR angiography of the aorta and the renal and other visceral abdominal arteries.

Holland, George A.; Dougherty, Lawrence; Carpenter, Jeffrey P.; Golden, Michael A.; Gilfeather, Maryellyn; Slossman, F; Schnall, Mitchell D.; Axel, Leon

doi:10.2214/ajr.166.4.8610584

Cited by 226 publications

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“…Surprisingly, we could identify only two studies that compared digital subtraction angiography (DSA) with MRA in 19 [63] and 23 patients [61] with good correlation. In our own experience, with 25 patients in whom DSA and MRA were performed within 2 mo, the MRA had a 95% sensitivity and 90% specificity, compared to DSA as the "gold standard".…”

Section: Mramentioning

confidence: 99%

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Diagnosis and management of splanchnic ischemia

Kolkman¹,

Bargeman²,

Huisman³

et al. 2008

WJG

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Section: Mramentioning

confidence: 99%

“…By using contrast, so-called contrast enhanced (ce)-MRA it is possible to identify splanchnic artery stenoses and even collaterals, for example Riolan's artery [60][61][62] . Surprisingly, we could identify only two studies that compared digital subtraction angiography (DSA) with MRA in 19 [63] and 23 patients [61] with good correlation.…”

Section: Mramentioning

confidence: 99%

Diagnosis and management of splanchnic ischemia

Kolkman¹,

Bargeman²,

Huisman³

et al. 2008

WJG

View full text Add to dashboard Cite

show abstract

“…In terms of abdominal vascular imaging, the diagnosis of renal artery stenosis, variations or pathologies of the celiac trunk and in some cases mesenteric arterial disease are indications for CE-MRA [8,9,17,22]. The early venous return of the bolus signal through the renal veins must be accounted for when timing the contrast medium administration correctly.…”

Section: Discussionmentioning

confidence: 99%

Clinical utility of contrast-enhanced MR angiography

et al. 1997

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MR angiography (MRA) is a technique under ongoing discussion. Its non-invasiveness and sensitivity to flow irregularities make it an investigational technique which is easy to apply but which does not always lead to comprehensive results. It requires special skill to perform and also experience for correct interpretation of the results. The lengthiness of the procedure combined with certain physical properties tends to limit its use to mostly neurovascular applications. With the introduction of ultrafast MRA in conjunction with peripheral bolus-injection of extracellular contrast media, a new approach to the imaging of such regions as the thoracic and abdominal vasculature not to mention other vascular territories has become possible. In this paper, considerations of bolus and measurement optimization and timing protocols for dedicated indications are presented together with an overview on the experience acquired to date for CE-MRA of the carotid artery, mediastinal and pulmonary vessels, abdominal vasculature, and peripheral vessels. The main advantage of ultrafast CE-MRA is that patients are subjected to much more tolerable breath-hold investigations with the result that physiological motion such as peristalsis or major pulsation is minimised.

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“…[1][2][3][4][5] However, the quality of the imaging is still not satisfactory, especially in children. We applied 3D MR angiography to vascular lesions in children and evaluated the clinical usefulness of this technique.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional magnetic resonance angiography of vascular lesions in children

et al. 2000

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We applied three-dimensional (3D) magnetic resonance (MR) angiography to vascular lesions in children and evaluated the clinical usefulness of this technique. Ten patients, whose ages ranged from 1 month to 16 years, underwent 3D MR angiography for 12 vascular lesions, including lesions in seven pulmonary arteries, two thoracic aortae, a pair of renal arteries, and one iliac artery. Three-dimensional MR angiography was performed with body-or pelvic-phased array coils on a 1.5-T scanner using fast spoiled gradient echo sequence. Data were acquired with the following parameters: TE, 1.9 ms; TR, 10.1 ms; flip angle, 20-60 degrees ; 1 or 2 NEX; field of view, 24-48 x 18-40 cm; matrix, 256 or 512 x 128 or 256; slice thickness, 1.2-7.5 mm; and 12, 28, or 60 partitions. Vascular imaging was enhanced with 20% gadolinium-diethylenetriaminepentaacetic acid. The examination was performed under breath-holding in six patients and with shallow breathing in four patients. In a comparative study with other noninvasive methods, 3D MR angiography was superior in seven of nine cases to other noninvasive examinations and in two cases, all methods evaluated the lesions. Furthermore, six cases were compared with conventional angiography. In five of the six cases, both methods depicted the lesions similarly, and in one case, MR angiography was more effective. A quantitative comparison of vascular diameter in the MR image was made with that in the conventional angiographic image. The correlation between them was excellent: y = 1.145x-2.090 (r = 0.987; P < 0.0001), where x is the diameter in the conventional angiographic images, y is the diameter in the MR images, and r is the correlation coefficient. In conclusion, 3D MR angiography is useful for depicting peripheral vascular lesions in children.

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Breath-hold ultrafast three-dimensional gadolinium-enhanced MR angiography of the aorta and the renal and other visceral abdominal arteries.

Abstract: OBJECTIVES.The objectives of this study were to develop and show the efficacy of a breath-hold ultrafast three-dimensional (3D) spoiled gradient-echo (SPGR) gadolin-

Cited by 226 publications

References 0 publications

Diagnosis and management of splanchnic ischemia

Diagnosis and management of splanchnic ischemia

Clinical utility of contrast-enhanced MR angiography

Three-dimensional magnetic resonance angiography of vascular lesions in children

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