PMID: 9178244Jun 1, 1997Paper

Improved vessel visualization in MR angiography by nonlinear anisotropic filtering

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
M M OrkiszP C Douek

Abstract

This paper deals with a preprocessing technique of magnetic resonance angiography (MRA) images, applied before maximum-intensity-projection (MIP). The purpose was to recover small low-intensity vessels, visible in individual slices, but lost in MIP images that usually have higher background level than the individual slices. The authors have developed a nonlinear three-dimensional spatial filtering technique (called HD filter) based on anisotropic smoothing. The filter first searches for the local orientation of the vessel. It then performs a nonlinear smoothing in the vessel's local direction so as to avoid blurring its boundaries. Noise level reduction, contrast enhancement, and improved small vessel visibility achieved by this filter are illustrated on dynamic contrast-enhanced subtraction MRA images of the lower limbs.

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Citations

Feb 19, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·A L AlexanderD L Parker
Oct 31, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·H E ClineS Ludke
Jan 28, 2014·PloS One·Alfredo Morales PinzónMarcela Hernández Hoyos
Mar 16, 2002·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Marcela Hernández-HoyosIsabelle E Magnin
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Jul 1, 2004·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Jasjit S SuriSwamy Laxminarayan
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Jul 1, 2004·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Jasjit S SuriSwamy Laxminarayan
Jun 22, 2002·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Jasjit S SuriSwamy N Laxminarayan
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Dec 18, 2014·Biomedical Engineering Online·Qingqi HongQingqiang Wu
Dec 4, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P J H de KoningJ H C Reiber
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Feb 26, 2019·Biomedical Optics Express·Michał ChlebiejMaciej Szkulmowski

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