Single-shot half-fourier RARE sequence with ultra-short inter-echo spacing for lung imaging
Purpose To improve the image quality of pulmonary magnetic resonance (MR) imaging using an ultra‐short inter‐echo spacing half‐Fourier single shot rapid acquisition with relaxation enhancement (USHA‐RARE) sequence. Materials and Methods Pulmonary MR images were acquired by USHA‐RARE sequence with va...
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| Veröffentlicht in: | Journal of magnetic resonance imaging 2004-08, Vol.20 (2), p.336-339 |
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| container_title | Journal of magnetic resonance imaging |
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| creator | Ohno, Yoshiharu Oshio, Koichi Uematsu, Hidemasa Nakatsu, Masashi Gefter, Warren B. Hatabu, Hiroto |
| description | Purpose
To improve the image quality of pulmonary magnetic resonance (MR) imaging using an ultra‐short inter‐echo spacing half‐Fourier single shot rapid acquisition with relaxation enhancement (USHA‐RARE) sequence.
Materials and Methods
Pulmonary MR images were acquired by USHA‐RARE sequence with various inter‐echo spacings. The sequence parameters were as follows: repetition time (TR)/effective TE: infinite/39–41 msec; section thickness: 10 mm; acquisition matrix: 128 × 128; field of view: 450 × 450 mm. Inter‐echo spacing varied (2.5 msec, 3.0 msec, 3.5 msec, 4.0 msec, 4.5 msec, 5.0 msec), and the respective phase‐encoding steps were 80, 77, 75, 74, 73, and 72. Signal‐to‐noise ratios (SNRs), the signal ratios between lung and fat (lung‐to‐fat ratio: LFRs), and the signal ratios between the lung and the serratus anterior muscle (lung‐to‐muscle ratio: LMRs) of each inter‐echo spacing were calculated, and statistically evaluated.
Results
The SNRs at inter‐echo spacings of ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05). The LFRs and LMRs at inter‐echo spacing ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05).
Conclusion
USHA‐RARE sequence does improve signal intensity from the lung. J. Magn. Reson. Imaging 2004;20:336–339. © 2004 Wiley‐Liss, Inc. |
| doi_str_mv | 10.1002/jmri.20107 |
| format | Article |
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To improve the image quality of pulmonary magnetic resonance (MR) imaging using an ultra‐short inter‐echo spacing half‐Fourier single shot rapid acquisition with relaxation enhancement (USHA‐RARE) sequence.
Materials and Methods
Pulmonary MR images were acquired by USHA‐RARE sequence with various inter‐echo spacings. The sequence parameters were as follows: repetition time (TR)/effective TE: infinite/39–41 msec; section thickness: 10 mm; acquisition matrix: 128 × 128; field of view: 450 × 450 mm. Inter‐echo spacing varied (2.5 msec, 3.0 msec, 3.5 msec, 4.0 msec, 4.5 msec, 5.0 msec), and the respective phase‐encoding steps were 80, 77, 75, 74, 73, and 72. Signal‐to‐noise ratios (SNRs), the signal ratios between lung and fat (lung‐to‐fat ratio: LFRs), and the signal ratios between the lung and the serratus anterior muscle (lung‐to‐muscle ratio: LMRs) of each inter‐echo spacing were calculated, and statistically evaluated.
Results
The SNRs at inter‐echo spacings of ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05). The LFRs and LMRs at inter‐echo spacing ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05).
Conclusion
USHA‐RARE sequence does improve signal intensity from the lung. J. Magn. Reson. Imaging 2004;20:336–339. © 2004 Wiley‐Liss, Inc.</description><identifier>ISSN: 1053-1807</identifier><identifier>EISSN: 1522-2586</identifier><identifier>DOI: 10.1002/jmri.20107</identifier><identifier>PMID: 15269963</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Adult ; Fourier Analysis ; half-Fourier imaging ; Humans ; lung ; Lung - anatomy & histology ; Lung - pathology ; Lung Diseases - diagnosis ; magnetic resonance (MR) ; Magnetic Resonance Imaging - methods ; Male ; pulse sequence ; rapid imaging ; Signal Processing, Computer-Assisted</subject><ispartof>Journal of magnetic resonance imaging, 2004-08, Vol.20 (2), p.336-339</ispartof><rights>Copyright © 2004 Wiley‐Liss, Inc.</rights><rights>Copyright 2004 Wiley-Liss, Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4307-b3e7bfea10ba813330d65fc10acf6ce7ceb8bf328525678eb354117301a39be03</citedby><cites>FETCH-LOGICAL-c4307-b3e7bfea10ba813330d65fc10acf6ce7ceb8bf328525678eb354117301a39be03</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%2Fjmri.20107$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjmri.20107$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,27901,27902,45550,45551,46384,46808</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15269963$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ohno, Yoshiharu</creatorcontrib><creatorcontrib>Oshio, Koichi</creatorcontrib><creatorcontrib>Uematsu, Hidemasa</creatorcontrib><creatorcontrib>Nakatsu, Masashi</creatorcontrib><creatorcontrib>Gefter, Warren B.</creatorcontrib><creatorcontrib>Hatabu, Hiroto</creatorcontrib><title>Single-shot half-fourier RARE sequence with ultra-short inter-echo spacing for lung imaging</title><title>Journal of magnetic resonance imaging</title><addtitle>J. Magn. Reson. Imaging</addtitle><description>Purpose
To improve the image quality of pulmonary magnetic resonance (MR) imaging using an ultra‐short inter‐echo spacing half‐Fourier single shot rapid acquisition with relaxation enhancement (USHA‐RARE) sequence.
Materials and Methods
Pulmonary MR images were acquired by USHA‐RARE sequence with various inter‐echo spacings. The sequence parameters were as follows: repetition time (TR)/effective TE: infinite/39–41 msec; section thickness: 10 mm; acquisition matrix: 128 × 128; field of view: 450 × 450 mm. Inter‐echo spacing varied (2.5 msec, 3.0 msec, 3.5 msec, 4.0 msec, 4.5 msec, 5.0 msec), and the respective phase‐encoding steps were 80, 77, 75, 74, 73, and 72. Signal‐to‐noise ratios (SNRs), the signal ratios between lung and fat (lung‐to‐fat ratio: LFRs), and the signal ratios between the lung and the serratus anterior muscle (lung‐to‐muscle ratio: LMRs) of each inter‐echo spacing were calculated, and statistically evaluated.
Results
The SNRs at inter‐echo spacings of ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05). The LFRs and LMRs at inter‐echo spacing ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05).
Conclusion
USHA‐RARE sequence does improve signal intensity from the lung. J. Magn. Reson. Imaging 2004;20:336–339. © 2004 Wiley‐Liss, Inc.</description><subject>Adult</subject><subject>Fourier Analysis</subject><subject>half-Fourier imaging</subject><subject>Humans</subject><subject>lung</subject><subject>Lung - anatomy & histology</subject><subject>Lung - pathology</subject><subject>Lung Diseases - diagnosis</subject><subject>magnetic resonance (MR)</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Male</subject><subject>pulse sequence</subject><subject>rapid imaging</subject><subject>Signal Processing, Computer-Assisted</subject><issn>1053-1807</issn><issn>1522-2586</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkE1PGzEQhq2qqHz10h9Q-dQDkmFsx-vdI4ogEPEhBRBIPVheMyamm2ywdwX8exyStjc4zWj0zKOZl5AfHPY5gDh4nMWwL4CD_kK2uBKCCVUWX3MPSjJegt4k2yk9AkBVDdQ3spmhoqoKuUV-X4X5Q4MsTduOTm3jmW_7GDDSyeHkiCZ86nHukD6Hbkr7pot2icaOhnmHkaGbtjQtrMsW6ttImz43YWYf8mCXbHjbJPy-rjvk5vjoenjCzi5Hp8PDM-YGEjSrJerao-VQ25JLKeG-UN5xsM4XDrXDuqy9FKUSqtAl1lINONcSuJVVjSB3yK-VdxHbfG7qzCwkh01j59j2yRSFllwMxKdglupS86VxbwW62KYU0ZtFzE_FV8PBLDM3y8zNe-YZ_rm29vUM7_-j65AzwFfAc2jw9QOVGZ9PTv9K2WonpA5f_u3Y-Mfkb7QytxcjMz65G46vYWSEfAOwopuG</recordid><startdate>200408</startdate><enddate>200408</enddate><creator>Ohno, Yoshiharu</creator><creator>Oshio, Koichi</creator><creator>Uematsu, Hidemasa</creator><creator>Nakatsu, Masashi</creator><creator>Gefter, Warren B.</creator><creator>Hatabu, Hiroto</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><scope>BSCLL</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>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>200408</creationdate><title>Single-shot half-fourier RARE sequence with ultra-short inter-echo spacing for lung imaging</title><author>Ohno, Yoshiharu ; Oshio, Koichi ; Uematsu, Hidemasa ; Nakatsu, Masashi ; Gefter, Warren B. ; Hatabu, Hiroto</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4307-b3e7bfea10ba813330d65fc10acf6ce7ceb8bf328525678eb354117301a39be03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Adult</topic><topic>Fourier Analysis</topic><topic>half-Fourier imaging</topic><topic>Humans</topic><topic>lung</topic><topic>Lung - anatomy & histology</topic><topic>Lung - pathology</topic><topic>Lung Diseases - diagnosis</topic><topic>magnetic resonance (MR)</topic><topic>Magnetic Resonance Imaging - methods</topic><topic>Male</topic><topic>pulse sequence</topic><topic>rapid imaging</topic><topic>Signal Processing, Computer-Assisted</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ohno, Yoshiharu</creatorcontrib><creatorcontrib>Oshio, Koichi</creatorcontrib><creatorcontrib>Uematsu, Hidemasa</creatorcontrib><creatorcontrib>Nakatsu, Masashi</creatorcontrib><creatorcontrib>Gefter, Warren B.</creatorcontrib><creatorcontrib>Hatabu, Hiroto</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of magnetic resonance imaging</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ohno, Yoshiharu</au><au>Oshio, Koichi</au><au>Uematsu, Hidemasa</au><au>Nakatsu, Masashi</au><au>Gefter, Warren B.</au><au>Hatabu, Hiroto</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Single-shot half-fourier RARE sequence with ultra-short inter-echo spacing for lung imaging</atitle><jtitle>Journal of magnetic resonance imaging</jtitle><addtitle>J. Magn. Reson. Imaging</addtitle><date>2004-08</date><risdate>2004</risdate><volume>20</volume><issue>2</issue><spage>336</spage><epage>339</epage><pages>336-339</pages><issn>1053-1807</issn><eissn>1522-2586</eissn><abstract>Purpose
To improve the image quality of pulmonary magnetic resonance (MR) imaging using an ultra‐short inter‐echo spacing half‐Fourier single shot rapid acquisition with relaxation enhancement (USHA‐RARE) sequence.
Materials and Methods
Pulmonary MR images were acquired by USHA‐RARE sequence with various inter‐echo spacings. The sequence parameters were as follows: repetition time (TR)/effective TE: infinite/39–41 msec; section thickness: 10 mm; acquisition matrix: 128 × 128; field of view: 450 × 450 mm. Inter‐echo spacing varied (2.5 msec, 3.0 msec, 3.5 msec, 4.0 msec, 4.5 msec, 5.0 msec), and the respective phase‐encoding steps were 80, 77, 75, 74, 73, and 72. Signal‐to‐noise ratios (SNRs), the signal ratios between lung and fat (lung‐to‐fat ratio: LFRs), and the signal ratios between the lung and the serratus anterior muscle (lung‐to‐muscle ratio: LMRs) of each inter‐echo spacing were calculated, and statistically evaluated.
Results
The SNRs at inter‐echo spacings of ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05). The LFRs and LMRs at inter‐echo spacing ≤ 3.0 msec were significantly higher than those ≥ 4.0 msec (P < 0.05).
Conclusion
USHA‐RARE sequence does improve signal intensity from the lung. J. Magn. Reson. Imaging 2004;20:336–339. © 2004 Wiley‐Liss, Inc.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>15269963</pmid><doi>10.1002/jmri.20107</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley Online Library - AutoHoldings Journals; MEDLINE; Wiley Online Library Journals |
| subjects | Adult Fourier Analysis half-Fourier imaging Humans lung Lung - anatomy & histology Lung - pathology Lung Diseases - diagnosis magnetic resonance (MR) Magnetic Resonance Imaging - methods Male pulse sequence rapid imaging Signal Processing, Computer-Assisted |
| title | Single-shot half-fourier RARE sequence with ultra-short inter-echo spacing for lung imaging |
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