Apparent wall thickening of cystic renal lesions on MRI
dc.contributor.author | Gulani, Vikas | en_US |
dc.contributor.author | Adusumilli, Saroja | en_US |
dc.contributor.author | Hussain, Hero K. | en_US |
dc.contributor.author | Vazquez, Alberto L. | en_US |
dc.contributor.author | Francis, Isaac R. | en_US |
dc.contributor.author | Noll, Douglas C. | en_US |
dc.date.accessioned | 2008-08-04T15:14:36Z | |
dc.date.available | 2009-07-06T16:34:52Z | en_US |
dc.date.issued | 2008-07 | en_US |
dc.identifier.citation | Gulani, Vikas; Adusumilli, Saroja; Hussain, Hero K.; Vazquez, Alberto L.; Francis, Isaac R.; Noll, Douglas C. (2008). "Apparent wall thickening of cystic renal lesions on MRI." Journal of Magnetic Resonance Imaging 28(1): 103-110. <http://hdl.handle.net/2027.42/60469> | en_US |
dc.identifier.issn | 1053-1807 | en_US |
dc.identifier.issn | 1522-2586 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/60469 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=18581399&dopt=citation | en_US |
dc.description.abstract | Purpose To show that cystic renal lesions that would otherwise meet criteria for simple cysts can demonstrate perceptible walls or increased wall thickness on MRI, sometimes causing these lesions to be “upgraded.” It was hypothesized that thickening of cyst walls on MRI can be artifactual, due to data truncation, applied filtering, and low signal-to-noise ratio (SNR). Materials and Methods k-Space data for a 4-cm cyst were created in a 40-cm field of view (FOV) (512 × 512 matrix). Additional data sets were created using the central 512 × 256 and 512 × 128 points. Noise was simulated so that the cyst SNR was approximately 7, 14, and 20, respectively. Actual wall thickness was set at 0.25 mm, and cyst:wall signal at 1:4. An inverse two-dimensional (2D) fast Fourier transform (FFT) yielded simulated images. A Fermi filter was applied to reduce ringing. Images/projections were examined for wall thickening. Seven patients with initially thick-walled cysts on fat-saturated spoiled gradient-echo (FS-SPGR) images were scanned with increasing resolution (256 × 128 and 256 × 256; four patients were also scanned with 512 × 512). Average wall thickness at each resolution was compared using a two-tailed paired Student's t -test. Results Simulations showed apparent wall thickening at low resolution, improving with higher resolutions. Low SNR and application of the Fermi filter made it difficult to identify ringing as the cause of this thickening. The simulation results were confirmed on seven patients, whose cyst walls proved to be artifactually thickened ( P < 0.01). Conclusion Thickening of cyst walls on MRI can be artifactual. Upon encountering thick-walled cystic renal lesions, high-resolution images can be acquired to exclude apparent thickening. J. Magn. Reson. Imaging 2008;28103–110. © 2008 Wiley-Liss, Inc. | en_US |
dc.format.extent | 491173 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Life and Medical Sciences | en_US |
dc.subject.other | Imaging | en_US |
dc.title | Apparent wall thickening of cystic renal lesions on MRI | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Medicine (General) | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA ; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationother | Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA ; Department of Radiology, University Hospitals of Cleveland, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106 | en_US |
dc.contributor.affiliationother | University of Pittsburgh, Department of Radiology, Pittsburgh, Pennsylvania, USA | en_US |
dc.identifier.pmid | 18581399 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/60469/1/21376_ftp.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1002/jmri.21376 | en_US |
dc.identifier.source | Journal of Magnetic Resonance Imaging | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.