Non-contrast-enhanced magnetic resonance angiography: a reliable clinical tool for evaluating transplant renal artery stenosis
- 17.04.2018
- Urogenital
Erschienen in:
- Verfasst von
- Long Jiang Zhang
- Jin Peng
- Jiqiu Wen
- U. Joseph Schoepf
- Akos Varga-Szemes
- L. Parkwood Griffith
- Yuan Meng Yu
- Shu Min Tao
- Yan Jun Li
- Xue Feng Ni
- Jian Xu
- Dong Hong Shi
- Guang Ming Lu
- Erschienen in
- European Radiology | Ausgabe 10/2018
Abstract
Purpose
To evaluate image quality of non-contrast-enhanced magnetic resonance angiography (MRA) and compare transplant renal artery stenosis (TRAS) seen by non-contrast-enhanced MRA with digital subtraction angiography (DSA) as the gold standard.
Materials and methods
330 patients receiving 369 non-contrast-enhanced MRA examinations from July 2014 to June 2017 were included. Thirty patients received at least two MRA examinations. Image quality was independently assessed by two radiologists. Inter-observer agreement was analyzed. Transplant renal artery anatomy and complications were evaluated and compared with DSA. If possible, accuracy was calculated on a per-artery basis.
Results
Good or excellent image quality was found in 95.4 % (352/369) of examinations with good inter-observer agreement (K=0.760). Twenty-two patients with DSA had 28 non-contrast-enhanced MRA examinations within a 2-month period. Of these, 19 patients had TRAS, two patients had pseudoaneurysms, and one patient had a normal transplant renal artery but an occluded external iliac artery. Non-contrast-enhanced MRA correctly detected 19 TRAS and nine normal arteries, giving 96.6 % accuracy on a per-artery basis.
Conclusions
Non-contrast-enhanced MRA demonstrates a good depiction of the transplanted renal artery and shows good correlation with DSA in cases where there was TRAS.
Key Points
• Good or excellent image quality was found in 95.4 % of examinations.
• Non-contrast-enhanced MRA can clearly map transplant renal artery anatomy.
• Non-contrast-enhanced MRA is a reliable tool to detect TRAS.
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- Titel
- Non-contrast-enhanced magnetic resonance angiography: a reliable clinical tool for evaluating transplant renal artery stenosis
- Verfasst von
-
Long Jiang Zhang
Jin Peng
Jiqiu Wen
U. Joseph Schoepf
Akos Varga-Szemes
L. Parkwood Griffith
Yuan Meng Yu
Shu Min Tao
Yan Jun Li
Xue Feng Ni
Jian Xu
Dong Hong Shi
Guang Ming Lu
- Publikationsdatum
- 17.04.2018
- Verlag
- Springer Berlin Heidelberg
- Erschienen in
-
European Radiology / Ausgabe 10/2018
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084 - DOI
- https://doi.org/10.1007/s00330-018-5413-3
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