Is there a role for free breathing non-contrast steady-state free precession renal MRA imaging for assessing live donors? A preliminary study
| Autor: | Ben Ariff, Alan Glover, Rebecca A. Quest, D Taube, C Juli, I Laurence, P Gishen, V Papalois, S. Moser |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male medicine.medical_specialty medicine.medical_treatment Collateral Circulation Contrast Media Pilot Projects Kidney Nephrectomy Preoperative care Magnetic resonance angiography Renal Artery medicine.artery Preoperative Care Living Donors medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies cardiovascular diseases Renal artery Kidney transplantation Full Paper medicine.diagnostic_test business.industry Respiration General Medicine Steady-state free precession imaging Middle Aged medicine.disease Collateral circulation Kidney Transplantation eye diseases medicine.anatomical_structure cardiovascular system Female Radiology business Magnetic Resonance Angiography circulatory and respiratory physiology |
| Zdroj: | The British Journal of Radiology. 85:e448-e454 |
| ISSN: | 1748-880X 0007-1285 |
| Popis: | Accurate pre-operative evaluation of renal vascular anatomy is essential for successful renal harvest in live donor transplantation. Non-contrast renal MR angiographic (MRA) techniques are potentially well suited to the screening of donors; however, their restricted imaging field of view (FOV) has previously been an important limitation. We sought to assess whether the addition of a large FOV balanced fast field echo (BFFE) steady-state free precession (SSFP) sequence to non-contrast SSFP MRA could overcome this problem. Comparison with contrast-enhanced MRA (CE MRA) and findings at surgery were performed.22 potential renal donors each underwent SSFP and CE MRA. 11 out of 22 potential donors subsequently underwent a donor nephrectomy.All images were diagnostic. Both SSFP MRA and CE MRA identified an equal number of arteries. Surgery confirmed two accessory renal arteries, both demonstrated with both imaging techniques. A third accessory vessel was identified with both techniques on a kidney contralateral to the donated organ. 6 out of 11 procured kidneys demonstrated early branch arteries at surgery, 5 out of 6 of which had been depicted on both SSFP and CE MRA. The median grading of image quality for main renal arteries was slightly better for CE MRA (p=0.048), but for accessory vessels it was better for SSFP MRA.This pilot study indicates that by combining free-breathing SSFP MRA with large-FOV bFFE images, an accurate depiction of renal vascular anatomy without the need for intravenous contrast administration can be obtained, as compared with surgical findings and CE MRA. |
| Databáze: | OpenAIRE |
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