3.0Tesla magnetic resonance angiography (MRA) for comprehensive renal evaluation of living renal donors: pilot study with computerized tomography angiography (CTA) comparison

Gulati, Mittul; Dermendjian, Harout; Gómez, Ana M.; Tan, Nelly; Margolis, Daniel; Lu, David; Gritsch, H. Albin; Raman, Steven S.

doi:10.1016/j.clinimag.2016.01.010

Cited by 10 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, it is widely accepted that the most relevant evaluation, in this context, is that of the proximal segments. Finally, despite the lack of a surgical correlation regarding the assessment of multiple arteries, we, like other authors (14,32) , believe that using surgical findings as the gold standard may create a bias, since only one of the two kidneys is chosen for harvest, usually the one with less complex anatomy. Therefore, the anatomy of the contralateral kidney would remain unknown, because it would not be submitted to the reference standard method.…”

Section: Discussionmentioning

confidence: 88%

Unenhanced magnetic resonance angiography as an accurate alternative in the preoperative assessment of potential living kidney donors with contraindications to computed tomography angiography and to contrast-enhanced magnetic resonance angiography

et al. 2020

View full text Add to dashboard Cite

Objective: To evaluate the accuracy of steady-state free precession (SSFP) unenhanced magnetic resonance angiography (MRA) at 1.5 T for the identification of multiple renal arteries, using computed tomography angiography (CTA) as the reference standard. Materials and Methods: This was a prospective study involving 39 patients (26 males; mean age, 62.6 years) who underwent CTA and unenhanced MRA to evaluate the proximal and middle segments of the renal arteries. The analysis was performed in two phases: the quality of unenhanced MRA images was classified as diagnostic or nondiagnostic for the presence of multiple renal arteries by two independent readers; two other independent readers then evaluated the images previously classified as being of diagnostic quality. The sensitivity, specificity, and overall accuracy of unenhanced MRA were calculated, CTA being used as the reference standard. The kappa statistic was used in order to calculate interobserver agreement. Results: The image quality of unenhanced MRA was considered diagnostic in 70-90% of the extrarenal arterial segments. The CTA examination revealed 19 multiple renal arteries (8 on the right and 11 on the left). The accuracy of unenhanced MRA for the identification of multiple renal arteries was greater than 90%, with a sensitivity of 72.7-100% and a specificity of 96.3-100%. Conclusion: Unenhanced MRA provides high quality imaging of the extrarenal segments of renal arteries. This method may be used as an alternative for the evaluation of the renal arteries, given that it has an accuracy comparable to that of CTA.

show abstract

Section: Discussionmentioning

confidence: 88%

Unenhanced magnetic resonance angiography as an accurate alternative in the preoperative assessment of potential living kidney donors with contraindications to computed tomography angiography and to contrast-enhanced magnetic resonance angiography

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A recent study that focus on preoperative MR Angiography in donor candidates reveal that it is possible to determine the renal arterial and venous anatomy with high accuracy when compared with CTA, though CTA was found more reliable in the depiction of small renal veins [16]. Also MRI has the capability to evaluate pre and post-transplant renal function, parenchymal volume, renal blood flow and glomerular filtration rate [171819].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Vascular Structures of Living Donor Kidneys by Multislice Computed Tomography Angiography before Transplant Surgery: Is Arterial Phase Sufficient for Determination of Both Arteries and Veins?

İkidağ

Uysal

2019

Journal of the Belgian Society of Radiology

View full text Add to dashboard Cite

Objectives: The aim of our study was to determine the efficacy of preoperative early arterial Computed tomography angiography (CTA) in donor nephrectomy, to assess the renal arterial and venous structures of donor kidneys. Materials and Methods: Seventy living donor candidates were included to this study, who had CTA for the assessment of their renal vessels in our hospital between January 2011 and January 2015. Only early arterial phase images were obtained to avoid exposing the patients from high dose of radiation. Scans were reported by two radiologists independently. The number of renal arteries, veins and their tributaries were documented. The donor kidneys were removed by two consultant surgeons, and after back-table perfusion the same details were recorded and taken as the reference findings for the operation side. Results: A total of 70 potential live kidney donors underwent renal CTA, among them fifty five patients had donor nephrectomy. A total of 140 kidneys were evaluated by CTA and the vessels of 55 harvested kidneys were compared with CTA findings. There were 40 kidneys that had at least one accessory or polar artery. There were 5 early branching renal arteries, two retroaortic and two circumaortic renal veins. Three kidneys had multiple renal veins. Operation findings were totally consistent with CTA findings in patients who underwent donor nephrectomy. Conclusion: Arterial phase CTA is sufficient for evaluation of both arterial and venous vessels of kidneys, and precontrast, venous or late phase imaging should be preserved only for chosen circumstances to avoid high radiation exposure.

show abstract

“…All living donors should have a detailed medical evaluation to ensure donor's safety: an extensive history, physical exam, blood and urine screening tests, electrocardiogram, chest X-ray, and imaging evaluation of kidney anatomy and its associated vasculature (4). Most commonly, CTA, which has been demonstrated as an accurate, safe, and cost-effective technique, is performed for anatomical evaluation of the renal donor (5,6). Some centers use MRI/MRA in selected living renal donor patients (7).…”

Section: Living Renal Donor Evaluationmentioning

confidence: 99%

“…Small studies have shown that CT and MRI are comparable techniques for living donor evaluation (9)(10)(11). A pilot study with a 3.0 Tesla MRI for kidney anatomy assessment demonstrated high sensitivity (96%) for delineating arterial anatomy, but lower sensitivity (76%) for venous anatomy (6). Another small study demonstrated that non-contrast MRI could also be a potential replacement for CTA (12).…”

Section: Cta Versus Mra In Living Renal Donor Evaluationmentioning

confidence: 99%

Vascular imaging in renal donors

Aghayev¹,

Gupta²,

Dabiri³

et al. 2019

Cardiovasc. Diagn. Ther.

View full text Add to dashboard Cite

Imaging plays a crucial role in pre-transplant evaluation to enhance the probability of a successful outcome. Its aim is to define kidney and vascular anatomy and to assess potential pathologies. Each modality has advantages and disadvantages. Computed tomography angiography (CTA) is the most commonly used imaging modality, however, magnetic resonance angiography (MRA) can be used in selected cases. The purpose of this review article is to provide an overview of available imaging modalities, their benefits, risks, advantages, and disadvantages. Imaging findings that indicate particular anomalies and pathologies that may affect living renal donor selection will be discussed.

show abstract

3.0Tesla magnetic resonance angiography (MRA) for comprehensive renal evaluation of living renal donors: pilot study with computerized tomography angiography (CTA) comparison

Cited by 10 publications

References 23 publications

Unenhanced magnetic resonance angiography as an accurate alternative in the preoperative assessment of potential living kidney donors with contraindications to computed tomography angiography and to contrast-enhanced magnetic resonance angiography

Unenhanced magnetic resonance angiography as an accurate alternative in the preoperative assessment of potential living kidney donors with contraindications to computed tomography angiography and to contrast-enhanced magnetic resonance angiography

Evaluation of Vascular Structures of Living Donor Kidneys by Multislice Computed Tomography Angiography before Transplant Surgery: Is Arterial Phase Sufficient for Determination of Both Arteries and Veins?

Vascular imaging in renal donors

Contact Info

Product

Resources

About