Contrast-bolus MR angiography of the transplanted kidney with a low-field (0.5-T) scanner: diagnostic accuracy, sensitivity and specificity of images and reconstructions in the evaluation of vascular complications

Stecco, Alessandro; Oronzo, Paolo; Armienti, Felice; Borraccino, C.; Fossaceca, Rita; Canalis, L.; Carriero, Alessandro

doi:10.1007/s11547-007-0203-z

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…It was often assumed that more advanced imaging techniques are difficult to use, especially at static field strengths below 0.5 T. In addition to noncontrast MRA, such as the time-of-flight MRA, contrast-enhanced MRA using a Gd contrast agent can be imaged on low-field MR scanners. 69 , 70 Rinck and Muller 47 reported that the contrast effect of contrast agents in low-field MRI systems is lower than that in high-field MRI systems, which seems to be a disadvantage. However, one of the most important imaging parameters for contrast-enhanced MRA is sufficiently short TE.…”

Section: In Vivo Applications From the Past To The Presentmentioning

confidence: 99%

Low-Field Magnetic Resonance Imaging

et al. 2021

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Low-field magnetic resonance imaging (MRI) systems have seen a renaissance recently due to improvements in technology (both hardware and software). Originally, the performance of low-field MRI systems was rated lower than their actual clinical usefulness, and they were viewed as low-cost but poorly performing systems. However, various applications similar to high-field MRI systems (1.5 T and 3 T) have gradually become possible, culminating with high-performance low-field MRI systems and their adaptations now being proposed that have unique advantages over high-field MRI systems in various aspects. This review article describes the physical characteristics of low-field MRI systems and presents both their advantages and disadvantages for clinical use (past to present), along with their cutting-edge clinical applications.

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Section: In Vivo Applications From the Past To The Presentmentioning

confidence: 99%

Low-Field Magnetic Resonance Imaging

et al. 2021

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“…Compared to DSA, NCE-MRA displays a sensitivity up to 100%, a specificity ranging from 85.7 to 90% and an accuracy of 91-96.6% [104,105,111,112]. Studies using CE-MRA report a comparable sensitivity and specificity [113][114][115][116][117]. It is difficult to distinguish between the results of the CE and NCE-MRA studies, due to the low number of inclusions and technical improvement of MRA techniques over the years.…”

Section: Long-term Vascular Complicationsmentioning

confidence: 99%

MRI for diagnosis of post-renal transplant complications: current state-of-the-art and future perspectives

Schutter

Lantinga

Borra

et al. 2019

Magn Reson Mater Phy

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Kidney transplantation has developed into a widespread procedure to treat end stage renal failure, with transplantation results improving over the years. Postoperative complications have decreased over the past decades, but are still an important cause of morbidity and mortality. Early accurate diagnosis and treatment is the key to prevent renal allograft impairment or even graft loss. Ideally, a diagnostic tool should be able to detect post-transplant renal dysfunction, differentiate between the different causes and monitor renal function during and after therapeutic interventions. Non-invasive imaging modalities for diagnostic purposes show promising results. Magnetic resonance imaging (MRI) techniques have a number of advantages, such as the lack of ionizing radiation and the possibility to obtain relevant tissue information without contrast, reducing the risk of contrast-induced nephrotoxicity. However, most techniques still lack the specificity to distinguish different types of parenchymal diseases. Despite some promising outcomes, MRI is still barely used in the post-transplantation diagnostic process. The aim of this review is to survey the current literature on the relevance and clinical applicability of diagnostic MRI modalities for the detection of various types of complications after kidney transplantation.

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