Comparison between in-phase and opposed-phase T1-weighted breath-hold FLASH sequences for hepatic imaging
Our goal was to compare in-phase (IP) and opposed-phase (OP) sequences for GRE breath-hold hepatic imaging. Non-contrast-enhanced IP and OP GRE breath-hold images were obtained in 104 consecutive patients referred for abdominal MRI at 1.0 T. For both sequences, the TR, FA, matrix, FOV, slice thickne...
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| Veröffentlicht in: | Journal of Computer Assisted Tomography 1996-03, Vol.20 (2), p.230-235 |
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| creator | ROFSKY, N. M WEINREB, J. C AMBROSINO, M. M SAFIR, J KRINSKY, G |
| description | Our goal was to compare in-phase (IP) and opposed-phase (OP) sequences for GRE breath-hold hepatic imaging.
Non-contrast-enhanced IP and OP GRE breath-hold images were obtained in 104 consecutive patients referred for abdominal MRI at 1.0 T. For both sequences, the TR, FA, matrix, FOV, slice thickness, interslice gap, and measurements were kept constant. Images were compared quantitatively [liver/spleen and liver/lesion signal difference/noise ratio, (SD/N)] and qualitatively (artifacts, lesion detection and conspicuity, and intrahepatic anatomy).
There was no statistically significant difference when comparing IP and OP sequences for liver/spleen and liver/lesion SD/N or for the qualitative parameters. In patients with fatty infiltration, the OP sequences yielded substantially lower values for liver/spleen and liver/lesion SD/N (0.9 and -1.2, respectively) than the IP sequences (20 and 17, respectively). Furthermore, in several cases with fatty infiltration, many more lesions were identified using IP images.
The use of IP and OP GRE sequences provides complementary diagnostic information. Focal liver lesions may be obscured in the setting of fatty infiltration if only OP sequences are employed. A complete assessment of the liver with MR should include both IP and OP imaging. |
| doi_str_mv | 10.1097/00004728-199603000-00012 |
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Non-contrast-enhanced IP and OP GRE breath-hold images were obtained in 104 consecutive patients referred for abdominal MRI at 1.0 T. For both sequences, the TR, FA, matrix, FOV, slice thickness, interslice gap, and measurements were kept constant. Images were compared quantitatively [liver/spleen and liver/lesion signal difference/noise ratio, (SD/N)] and qualitatively (artifacts, lesion detection and conspicuity, and intrahepatic anatomy).
There was no statistically significant difference when comparing IP and OP sequences for liver/spleen and liver/lesion SD/N or for the qualitative parameters. In patients with fatty infiltration, the OP sequences yielded substantially lower values for liver/spleen and liver/lesion SD/N (0.9 and -1.2, respectively) than the IP sequences (20 and 17, respectively). Furthermore, in several cases with fatty infiltration, many more lesions were identified using IP images.
The use of IP and OP GRE sequences provides complementary diagnostic information. Focal liver lesions may be obscured in the setting of fatty infiltration if only OP sequences are employed. A complete assessment of the liver with MR should include both IP and OP imaging.</description><identifier>ISSN: 0363-8715</identifier><identifier>EISSN: 1532-3145</identifier><identifier>DOI: 10.1097/00004728-199603000-00012</identifier><identifier>PMID: 8606229</identifier><identifier>CODEN: JCATD5</identifier><language>eng</language><publisher>Hagerstown, MD: Lippincott</publisher><subject>Biological and medical sciences ; BIOLOGY AND MEDICINE, BASIC STUDIES ; Female ; Gastroenterology. Liver. Pancreas. Abdomen ; Humans ; INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS ; LIVER ; Liver - pathology ; LIVER CIRRHOSIS ; Liver Diseases - diagnosis ; Liver Neoplasms - diagnosis ; Liver. Biliary tract. Portal circulation. Exocrine pancreas ; Magnetic Resonance Imaging - methods ; Male ; Medical sciences ; Middle Aged ; Neoplasm Metastasis ; NEOPLASMS ; NMR IMAGING ; Other diseases. Semiology</subject><ispartof>Journal of Computer Assisted Tomography, 1996-03, Vol.20 (2), p.230-235</ispartof><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c431t-ff67f9cb9691f3cba3ef8bb96114a4a594ce7b6f258252d3a4557d470d17bc373</citedby><cites>FETCH-LOGICAL-c431t-ff67f9cb9691f3cba3ef8bb96114a4a594ce7b6f258252d3a4557d470d17bc373</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3062526$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8606229$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/437582$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>ROFSKY, N. M</creatorcontrib><creatorcontrib>WEINREB, J. C</creatorcontrib><creatorcontrib>AMBROSINO, M. M</creatorcontrib><creatorcontrib>SAFIR, J</creatorcontrib><creatorcontrib>KRINSKY, G</creatorcontrib><title>Comparison between in-phase and opposed-phase T1-weighted breath-hold FLASH sequences for hepatic imaging</title><title>Journal of Computer Assisted Tomography</title><addtitle>J Comput Assist Tomogr</addtitle><description>Our goal was to compare in-phase (IP) and opposed-phase (OP) sequences for GRE breath-hold hepatic imaging.
Non-contrast-enhanced IP and OP GRE breath-hold images were obtained in 104 consecutive patients referred for abdominal MRI at 1.0 T. For both sequences, the TR, FA, matrix, FOV, slice thickness, interslice gap, and measurements were kept constant. Images were compared quantitatively [liver/spleen and liver/lesion signal difference/noise ratio, (SD/N)] and qualitatively (artifacts, lesion detection and conspicuity, and intrahepatic anatomy).
There was no statistically significant difference when comparing IP and OP sequences for liver/spleen and liver/lesion SD/N or for the qualitative parameters. In patients with fatty infiltration, the OP sequences yielded substantially lower values for liver/spleen and liver/lesion SD/N (0.9 and -1.2, respectively) than the IP sequences (20 and 17, respectively). Furthermore, in several cases with fatty infiltration, many more lesions were identified using IP images.
The use of IP and OP GRE sequences provides complementary diagnostic information. Focal liver lesions may be obscured in the setting of fatty infiltration if only OP sequences are employed. A complete assessment of the liver with MR should include both IP and OP imaging.</description><subject>Biological and medical sciences</subject><subject>BIOLOGY AND MEDICINE, BASIC STUDIES</subject><subject>Female</subject><subject>Gastroenterology. Liver. Pancreas. Abdomen</subject><subject>Humans</subject><subject>INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS</subject><subject>LIVER</subject><subject>Liver - pathology</subject><subject>LIVER CIRRHOSIS</subject><subject>Liver Diseases - diagnosis</subject><subject>Liver Neoplasms - diagnosis</subject><subject>Liver. Biliary tract. Portal circulation. Exocrine pancreas</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Neoplasm Metastasis</subject><subject>NEOPLASMS</subject><subject>NMR IMAGING</subject><subject>Other diseases. 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Abdomen</topic><topic>Humans</topic><topic>INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS</topic><topic>LIVER</topic><topic>Liver - pathology</topic><topic>LIVER CIRRHOSIS</topic><topic>Liver Diseases - diagnosis</topic><topic>Liver Neoplasms - diagnosis</topic><topic>Liver. Biliary tract. Portal circulation. Exocrine pancreas</topic><topic>Magnetic Resonance Imaging - methods</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Neoplasm Metastasis</topic><topic>NEOPLASMS</topic><topic>NMR IMAGING</topic><topic>Other diseases. Semiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ROFSKY, N. M</creatorcontrib><creatorcontrib>WEINREB, J. C</creatorcontrib><creatorcontrib>AMBROSINO, M. M</creatorcontrib><creatorcontrib>SAFIR, J</creatorcontrib><creatorcontrib>KRINSKY, G</creatorcontrib><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><collection>OSTI.GOV</collection><jtitle>Journal of Computer Assisted Tomography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ROFSKY, N. M</au><au>WEINREB, J. C</au><au>AMBROSINO, M. M</au><au>SAFIR, J</au><au>KRINSKY, G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison between in-phase and opposed-phase T1-weighted breath-hold FLASH sequences for hepatic imaging</atitle><jtitle>Journal of Computer Assisted Tomography</jtitle><addtitle>J Comput Assist Tomogr</addtitle><date>1996-03-01</date><risdate>1996</risdate><volume>20</volume><issue>2</issue><spage>230</spage><epage>235</epage><pages>230-235</pages><issn>0363-8715</issn><eissn>1532-3145</eissn><coden>JCATD5</coden><abstract>Our goal was to compare in-phase (IP) and opposed-phase (OP) sequences for GRE breath-hold hepatic imaging.
Non-contrast-enhanced IP and OP GRE breath-hold images were obtained in 104 consecutive patients referred for abdominal MRI at 1.0 T. For both sequences, the TR, FA, matrix, FOV, slice thickness, interslice gap, and measurements were kept constant. Images were compared quantitatively [liver/spleen and liver/lesion signal difference/noise ratio, (SD/N)] and qualitatively (artifacts, lesion detection and conspicuity, and intrahepatic anatomy).
There was no statistically significant difference when comparing IP and OP sequences for liver/spleen and liver/lesion SD/N or for the qualitative parameters. In patients with fatty infiltration, the OP sequences yielded substantially lower values for liver/spleen and liver/lesion SD/N (0.9 and -1.2, respectively) than the IP sequences (20 and 17, respectively). Furthermore, in several cases with fatty infiltration, many more lesions were identified using IP images.
The use of IP and OP GRE sequences provides complementary diagnostic information. Focal liver lesions may be obscured in the setting of fatty infiltration if only OP sequences are employed. A complete assessment of the liver with MR should include both IP and OP imaging.</abstract><cop>Hagerstown, MD</cop><pub>Lippincott</pub><pmid>8606229</pmid><doi>10.1097/00004728-199603000-00012</doi><tpages>6</tpages></addata></record> |
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| subjects | Biological and medical sciences BIOLOGY AND MEDICINE, BASIC STUDIES Female Gastroenterology. Liver. Pancreas. Abdomen Humans INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS LIVER Liver - pathology LIVER CIRRHOSIS Liver Diseases - diagnosis Liver Neoplasms - diagnosis Liver. Biliary tract. Portal circulation. Exocrine pancreas Magnetic Resonance Imaging - methods Male Medical sciences Middle Aged Neoplasm Metastasis NEOPLASMS NMR IMAGING Other diseases. Semiology |
| title | Comparison between in-phase and opposed-phase T1-weighted breath-hold FLASH sequences for hepatic imaging |
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