Magnetic resonance imaging in the assessment of urologic disease: an all-in-one approach

Verswijvel, G; Oyen, Raymond; Poppel, H. P. Van; Goethuys, H; Maes, Bart; Vaninbrouckx, J; Bosmans, Hilde; Marchal, Guy

doi:10.1007/s003300000536

Cited by 55 publications

(29 citation statements)

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“…Disadvantages of this technique are that it has a relatively long acquisition time of approximately 5-8 min, and that in some patients the respiratory triggering works suboptimally which causes movement artifacts. Others have used a different type of MR urography technique, namely gadolinium-enhanced MR urography [17,22,27,28,29,30,31,32]. The accuracy of gadolinium-enhanced MR urography has, however, not been validated in a large number of patients.…”

Section: Discussionmentioning

confidence: 98%

MR urography for the preoperative evaluation of living renal donors

Bakker

Kort

et al. 2002

Eur Radiol

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The purpose of this study was to assess the image quality and diagnostic value of MR urography in detecting abnormalities of the urinary collecting system relevant for the preoperative evaluation of living renal donors. Study subjects were selected from the existing intravenous urography (IVU) reports: 18 consecutive patients with a duplication or another abnormality of the collecting system and 20 consecutive patients with normal anatomy. They underwent a respiratory-triggered 3D T2-weighted fast spin-echo acquisition after oral administration of furosemide, without and with abdominal compression. The MR images were evaluated by two independent blinded observers. The IVU was used as the standard of reference. Image quality of the MR urograms with compression was overall better than those without compression, and the former were regarded as adequate for the evaluation of small filling defects and deformities of the pelvis and calyces in 76-81% of the kidneys and 74-79% of the patients. Both observers correctly diagnosed all 13 kidneys with a partial or complete duplication. The image quality of MR urography was inadequate to evaluate the calyces and pelvis for small filling defects or deformities in approximately 25% of the patients; however, the technique was accurate in the detection of abnormalities of the urinary collecting system relevant for the preoperative evaluation of living renal donors.

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Section: Discussionmentioning

confidence: 98%

MR urography for the preoperative evaluation of living renal donors

Bakker

Kort

et al. 2002

Eur Radiol

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“…However, when the cost of additional investigations in inconclusive IVU studies is loaded and the economics of contrast and radiation morbidity also considered, the cost of MRU does not seem prohibitive. [33] The expertise of radiologists is already rising and with newer and faster protocols, artifacts are decreasing day by day. Moreover, the acceptance of IVU like MIP images is higher among surgeons than the cross-sectional studies like USG/ CT. [1] Future directions in MRU Different MR techniques can be combined to establish an all in one imaging modality for uroradiological evaluation.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Resonance Urography in Patients with NonContributory Intravenous Urography

Singhal¹

2017

IOSR JDMS

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“…Supplemental intravenous low-dose diuretics have already proved to be effective in gadolinium-enhanced excretory MR urography [36][37][38][39][40][41]. However, only few groups currently have reported on the use of diuretics in MSCT urography [5,15,21,33].…”

Section: Diuretic-enhanced Msct Urographymentioning

confidence: 99%

Understanding multislice CT urography techniques: many roads lead to Rome

2006

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CT urography has emerged as a serious alternative to conventional urography by utilizing the advantages of modern multislice CT techniques for the visualization of the entire upper urinary tract. Several different examination techniques have been developed in multislice CT (MSCT) urography for improving the opacification and distension of the urinary tract. All efforts in performing MSCT urography have to compromise between the best possible image quality and a reasonably low radiation exposure. Initial low-dose examination protocols are already available. Operating modern MSCT urography properly is not difficult, but it presupposes basic knowledge on the variety of current MSCT urography techniques, including such issues as present-day indications, split-bolus injection, compression, saline infusion, low-dose diuretic administration, hybrid scanning, timing of the acquisition delay, examination protocols, postprocessing, image analysis, and radiation exposure. This article is not intended to provide guidelines of how to conduct MSCT urography, but everyone will be able to understand the functionality of several robust operating MSCT urography techniques, which helps making an individual selection for the clinical practice. In the near future, systematic studies are awaited evaluating the morphologic and diagnostic accuracy of MSCT urography regarding diverse urinary tract disorders.

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Magnetic resonance imaging in the assessment of urologic disease: an all-in-one approach

Cited by 55 publications

References 0 publications

MR urography for the preoperative evaluation of living renal donors

MR urography for the preoperative evaluation of living renal donors

Magnetic Resonance Urography in Patients with NonContributory Intravenous Urography

Understanding multislice CT urography techniques: many roads lead to Rome

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