Improved vessel visualization in MR angiography by nonlinear anisotropic filtering
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 th...
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| Veröffentlicht in: | Magnetic resonance in medicine 1997-06, Vol.37 (6), p.914-919 |
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| container_title | Magnetic resonance in medicine |
| container_volume | 37 |
| creator | Orkisz, Maciej M. Bresson, Christine Magnin, Isabelle E. Champin, Olivier Douek, Philippe C. |
| description | 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. |
| doi_str_mv | 10.1002/mrm.1910370617 |
| format | Article |
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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. 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Reson. Med</addtitle><description>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.</description><subject>Arteries - anatomy & histology</subject><subject>Biological and medical sciences</subject><subject>Cardiovascular system</subject><subject>contrast enhancement</subject><subject>Humans</subject><subject>image processing</subject><subject>Image Processing, Computer-Assisted - methods</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Magnetic Resonance Angiography - methods</subject><subject>Medical sciences</subject><subject>MR angiography</subject><subject>Radiodiagnosis. Nmr imagery. Nmr spectrometry</subject><subject>three-dimensional filtering</subject><issn>0740-3194</issn><issn>1522-2594</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1PGzEURS1ERdOULbtKs0DsJvXX2OMlRBSQSIsiaNlZHudN6uLxBHsSGn49EyUK6qorL-657_kdhE4IHhGM6dcmNiOiCGYSCyIP0IAUlOa0UPwQDbDkOGdE8Y_oU0p_MMZKSX6EjhSRJeV8gKY3zSK2K5hlK0gJfLZyaWm8ezWda0PmQjaZZibMXTuPZvF7nVXrLLTBuwAm9oFLbRfbhbNZ7XwH0YX5Z_ShNj7B8e4doodvl_fj6_z2x9XN-Pw2t1wymROlaMUMLQtbm5rKCkpbSaAF2BkWglFTGVL2ZxUzTFgpuZBClgqgsFxxzNkQnW3n9gc8LyF1unHJgvcmQLtMWirMCiE34GgL2timFKHWi-gaE9eaYL2RqHuJ-l1iX_iym7ysGpjt8Z21Pj_d5SZZ4-tognVpj1GhmGKkx9QWe3Ee1v9ZqifTyT9fyLddlzr4u--a-KRFb6_Qv75fafLzQjwKeqfv2Bvc1Zoe</recordid><startdate>199706</startdate><enddate>199706</enddate><creator>Orkisz, Maciej M.</creator><creator>Bresson, Christine</creator><creator>Magnin, Isabelle E.</creator><creator>Champin, Olivier</creator><creator>Douek, Philippe C.</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Williams & Wilkins</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>199706</creationdate><title>Improved vessel visualization in MR angiography by nonlinear anisotropic filtering</title><author>Orkisz, Maciej M. ; Bresson, Christine ; Magnin, Isabelle E. ; Champin, Olivier ; Douek, Philippe C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4737-1992b3a285cfaf27be8cb7e25ecd06632aba183705d013874676789ee5c494043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Arteries - anatomy & histology</topic><topic>Biological and medical sciences</topic><topic>Cardiovascular system</topic><topic>contrast enhancement</topic><topic>Humans</topic><topic>image processing</topic><topic>Image Processing, Computer-Assisted - methods</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Magnetic Resonance Angiography - methods</topic><topic>Medical sciences</topic><topic>MR angiography</topic><topic>Radiodiagnosis. 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Nmr spectrometry</topic><topic>three-dimensional filtering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Orkisz, Maciej M.</creatorcontrib><creatorcontrib>Bresson, Christine</creatorcontrib><creatorcontrib>Magnin, Isabelle E.</creatorcontrib><creatorcontrib>Champin, Olivier</creatorcontrib><creatorcontrib>Douek, Philippe C.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Magnetic resonance in medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Orkisz, Maciej M.</au><au>Bresson, Christine</au><au>Magnin, Isabelle E.</au><au>Champin, Olivier</au><au>Douek, Philippe C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improved vessel visualization in MR angiography by nonlinear anisotropic filtering</atitle><jtitle>Magnetic resonance in medicine</jtitle><addtitle>Magn. Reson. Med</addtitle><date>1997-06</date><risdate>1997</risdate><volume>37</volume><issue>6</issue><spage>914</spage><epage>919</epage><pages>914-919</pages><issn>0740-3194</issn><eissn>1522-2594</eissn><coden>MRMEEN</coden><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.</abstract><cop>Baltimore</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>9178244</pmid><doi>10.1002/mrm.1910370617</doi><tpages>6</tpages></addata></record> |
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| ispartof | Magnetic resonance in medicine, 1997-06, Vol.37 (6), p.914-919 |
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| language | eng |
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| source | MEDLINE; Access via Wiley Online Library |
| subjects | Arteries - anatomy & histology Biological and medical sciences Cardiovascular system contrast enhancement Humans image processing Image Processing, Computer-Assisted - methods Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Angiography - methods Medical sciences MR angiography Radiodiagnosis. Nmr imagery. Nmr spectrometry three-dimensional filtering |
| title | Improved vessel visualization in MR angiography by nonlinear anisotropic filtering |
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