Frequency response of multi-phase segmented k-space phase-contrast
A theoretical analysis of the temporal frequency response of multi‐phase segmented k‐space phase‐contrast was developed. This includes the effects of both segment duration and the number of cardiac phases that are reconstructed. An increase in the number of views per segment and the corresponding in...
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| Veröffentlicht in: | Magnetic resonance in medicine 1996-05, Vol.35 (5), p.755-762 |
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| container_end_page | 762 |
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| container_issue | 5 |
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| container_title | Magnetic resonance in medicine |
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| creator | Polzin, Jason A. Frayne, Richard Grist, Thomas M. Mistretta, Charles A. |
| description | A theoretical analysis of the temporal frequency response of multi‐phase segmented k‐space phase‐contrast was developed. This includes the effects of both segment duration and the number of cardiac phases that are reconstructed. An increase in the number of views per segment and the corresponding increase in segment duration results in an increased smoothing or low‐pass filtering of the time‐resolved flow waveform. Reconstruction of all intermediate cardiac phases makes the Nyquist sampling frequency independent of the number of views per segment. This analysis was verified experimentally using a multi‐phase phase‐contrast segmented k‐space MR pulse sequence. This sequence reconstructs all intermediate cardiac phases and uses fractional segments at the end of the cardiac cycle if an entire segment does not fit. The use of fractional segments increases the portion of the cardiac cycle over which data are acquired. |
| doi_str_mv | 10.1002/mrm.1910350517 |
| format | Article |
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This includes the effects of both segment duration and the number of cardiac phases that are reconstructed. An increase in the number of views per segment and the corresponding increase in segment duration results in an increased smoothing or low‐pass filtering of the time‐resolved flow waveform. Reconstruction of all intermediate cardiac phases makes the Nyquist sampling frequency independent of the number of views per segment. This analysis was verified experimentally using a multi‐phase phase‐contrast segmented k‐space MR pulse sequence. This sequence reconstructs all intermediate cardiac phases and uses fractional segments at the end of the cardiac cycle if an entire segment does not fit. The use of fractional segments increases the portion of the cardiac cycle over which data are acquired.</description><identifier>ISSN: 0740-3194</identifier><identifier>EISSN: 1522-2594</identifier><identifier>DOI: 10.1002/mrm.1910350517</identifier><identifier>PMID: 8722827</identifier><identifier>CODEN: MRMEEN</identifier><language>eng</language><publisher>Baltimore: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Biological and medical sciences ; cardiac gating ; Cardiovascular system ; Coronary Circulation - physiology ; Electrocardiography ; flow imaging ; Heart - anatomy & histology ; Heart - physiology ; Humans ; Image Processing, Computer-Assisted ; Investigative techniques, diagnostic techniques (general aspects) ; Magnetic Resonance Imaging, Cine - methods ; Medical sciences ; Phantoms, Imaging ; Pulsatile Flow - physiology ; Radiodiagnosis. Nmr imagery. Nmr spectrometry ; Signal Processing, Computer-Assisted ; velocity mapping</subject><ispartof>Magnetic resonance in medicine, 1996-05, Vol.35 (5), p.755-762</ispartof><rights>Copyright © 1996 Wiley‐Liss, Inc., A Wiley Company</rights><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4077-e0c27b56601b6c7238cb6dbab083465d844ecc98fa75aacf84c32325c1e6d75c3</citedby><cites>FETCH-LOGICAL-c4077-e0c27b56601b6c7238cb6dbab083465d844ecc98fa75aacf84c32325c1e6d75c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmrm.1910350517$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmrm.1910350517$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3083416$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8722827$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Polzin, Jason A.</creatorcontrib><creatorcontrib>Frayne, Richard</creatorcontrib><creatorcontrib>Grist, Thomas M.</creatorcontrib><creatorcontrib>Mistretta, Charles A.</creatorcontrib><title>Frequency response of multi-phase segmented k-space phase-contrast</title><title>Magnetic resonance in medicine</title><addtitle>Magn. Reson. Med</addtitle><description>A theoretical analysis of the temporal frequency response of multi‐phase segmented k‐space phase‐contrast was developed. This includes the effects of both segment duration and the number of cardiac phases that are reconstructed. An increase in the number of views per segment and the corresponding increase in segment duration results in an increased smoothing or low‐pass filtering of the time‐resolved flow waveform. Reconstruction of all intermediate cardiac phases makes the Nyquist sampling frequency independent of the number of views per segment. This analysis was verified experimentally using a multi‐phase phase‐contrast segmented k‐space MR pulse sequence. This sequence reconstructs all intermediate cardiac phases and uses fractional segments at the end of the cardiac cycle if an entire segment does not fit. The use of fractional segments increases the portion of the cardiac cycle over which data are acquired.</description><subject>Biological and medical sciences</subject><subject>cardiac gating</subject><subject>Cardiovascular system</subject><subject>Coronary Circulation - physiology</subject><subject>Electrocardiography</subject><subject>flow imaging</subject><subject>Heart - anatomy & histology</subject><subject>Heart - physiology</subject><subject>Humans</subject><subject>Image Processing, Computer-Assisted</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Magnetic Resonance Imaging, Cine - methods</subject><subject>Medical sciences</subject><subject>Phantoms, Imaging</subject><subject>Pulsatile Flow - physiology</subject><subject>Radiodiagnosis. Nmr imagery. Nmr spectrometry</subject><subject>Signal Processing, Computer-Assisted</subject><subject>velocity mapping</subject><issn>0740-3194</issn><issn>1522-2594</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkMtPGzEQxq0KBCn0yq3SHhA3B7_tPZYI0kqESoiqR8s7O0sX9lV7I8h_z9JEqXrqaTQzv28eHyFnnM05Y-Kyje2c55xJzTS3H8iMayGo0Lk6IDNmFaOS5-qYfEzpiTGW51YdkSNnhXDCzsjVTcTfa-xgk0VMQ98lzPoqa9fNWNPhV5jShI8tdiOW2TNNQwDM_tQp9N0YQxpPyWEVmoSfdvGE_Li5flh8pbffl98WX24pKGYtRQbCFtoYxgsDVkgHhSmLUDAnldGlUwoBclcFq0OAyimQQgoNHE1pNcgTcrGdO8R-OjmNvq0TYNOEDvt18tZxa51xEzjfghD7lCJWfoh1G-LGc-bfTfOTaf6vaZPg827yumix3OM7l6b--a4fEoSmiqGDOu0x-f4BNxOWb7GXusHNf5b61f3qnxPoVlunEV_32hCfvbHSav_zbukfrpaSS7Xyd_INjaOUSg</recordid><startdate>199605</startdate><enddate>199605</enddate><creator>Polzin, Jason A.</creator><creator>Frayne, Richard</creator><creator>Grist, Thomas M.</creator><creator>Mistretta, Charles A.</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>199605</creationdate><title>Frequency response of multi-phase segmented k-space phase-contrast</title><author>Polzin, Jason A. ; Frayne, Richard ; Grist, Thomas M. ; Mistretta, Charles A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4077-e0c27b56601b6c7238cb6dbab083465d844ecc98fa75aacf84c32325c1e6d75c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Biological and medical sciences</topic><topic>cardiac gating</topic><topic>Cardiovascular system</topic><topic>Coronary Circulation - physiology</topic><topic>Electrocardiography</topic><topic>flow imaging</topic><topic>Heart - anatomy & histology</topic><topic>Heart - physiology</topic><topic>Humans</topic><topic>Image Processing, Computer-Assisted</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Magnetic Resonance Imaging, Cine - methods</topic><topic>Medical sciences</topic><topic>Phantoms, Imaging</topic><topic>Pulsatile Flow - physiology</topic><topic>Radiodiagnosis. Nmr imagery. Nmr spectrometry</topic><topic>Signal Processing, Computer-Assisted</topic><topic>velocity mapping</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Polzin, Jason A.</creatorcontrib><creatorcontrib>Frayne, Richard</creatorcontrib><creatorcontrib>Grist, Thomas M.</creatorcontrib><creatorcontrib>Mistretta, Charles A.</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>Polzin, Jason A.</au><au>Frayne, Richard</au><au>Grist, Thomas M.</au><au>Mistretta, Charles A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Frequency response of multi-phase segmented k-space phase-contrast</atitle><jtitle>Magnetic resonance in medicine</jtitle><addtitle>Magn. Reson. Med</addtitle><date>1996-05</date><risdate>1996</risdate><volume>35</volume><issue>5</issue><spage>755</spage><epage>762</epage><pages>755-762</pages><issn>0740-3194</issn><eissn>1522-2594</eissn><coden>MRMEEN</coden><abstract>A theoretical analysis of the temporal frequency response of multi‐phase segmented k‐space phase‐contrast was developed. This includes the effects of both segment duration and the number of cardiac phases that are reconstructed. An increase in the number of views per segment and the corresponding increase in segment duration results in an increased smoothing or low‐pass filtering of the time‐resolved flow waveform. Reconstruction of all intermediate cardiac phases makes the Nyquist sampling frequency independent of the number of views per segment. This analysis was verified experimentally using a multi‐phase phase‐contrast segmented k‐space MR pulse sequence. This sequence reconstructs all intermediate cardiac phases and uses fractional segments at the end of the cardiac cycle if an entire segment does not fit. The use of fractional segments increases the portion of the cardiac cycle over which data are acquired.</abstract><cop>Baltimore</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>8722827</pmid><doi>10.1002/mrm.1910350517</doi><tpages>8</tpages></addata></record> |
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| ispartof | Magnetic resonance in medicine, 1996-05, Vol.35 (5), p.755-762 |
| issn | 0740-3194 1522-2594 |
| language | eng |
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| source | Wiley Online Library - AutoHoldings Journals; MEDLINE |
| subjects | Biological and medical sciences cardiac gating Cardiovascular system Coronary Circulation - physiology Electrocardiography flow imaging Heart - anatomy & histology Heart - physiology Humans Image Processing, Computer-Assisted Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Imaging, Cine - methods Medical sciences Phantoms, Imaging Pulsatile Flow - physiology Radiodiagnosis. Nmr imagery. Nmr spectrometry Signal Processing, Computer-Assisted velocity mapping |
| title | Frequency response of multi-phase segmented k-space phase-contrast |
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