Feasibility Study of 3-T DWI of the Prostate: Readout-Segmented Versus Single-Shot Echo-Planar Imaging
The purpose of this prospective study was to assess the clinical utility of generalized autocalibrating partial parallel acquisition (GRAPPA)-accelerated readout-segmented echo-planar imaging (rs-EPI) DWI and compare it with standard single-shot EPI ( ss-EPI) DWI in visualization of the prostate dur...
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Veröffentlicht in: | American journal of roentgenology (1976) 2015-07, Vol.205 (1), p.70-76 |
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creator | Li, Liang Wang, Liang Deng, Ming Liu, Hui Cai, Jie Sah, Vivek Kumar Liu, Jihong |
description | The purpose of this prospective study was to assess the clinical utility of generalized autocalibrating partial parallel acquisition (GRAPPA)-accelerated readout-segmented echo-planar imaging (rs-EPI) DWI and compare it with standard single-shot EPI ( ss-EPI) DWI in visualization of the prostate during 3-T MRI.
One hundred sixteen consecutively registered patients (mean age, 63.5 years; range 24-93 years) underwent 3-T MRI that included rs-EPI DWI and standard ss-EPI DWI with identical FOVs, slices, acceleration factors, b values, and image postprocessing procedure. The datasets were independently evaluated by two blinded radiologists. Images were evaluated for sharpness, anatomic distortion, imaging contrast, lesion conspicuity, detailed anatomic visualization, and overall image quality on a 5-point Likert scale (1, nondiagnostic; 5, excellent).
The kappa values were 0.73 for image sharpness, 0.71 for anatomic distortion, 0.54 for imaging contrast, 0.56 for lesion conspicuity, 0.61 for detailed anatomic visualization, and 0.63 for overall image quality (all p < 0.05), indicating moderate to substantial agreement between the two observers. The mean Likert scores for standard ss-EPI and rs-EPI were as follows: image sharpness, 2.9 and 4.6; distortion level, 2.8 and 4.4; contrast, 3.1 and 3.8; lesion conspicuity, 3.0 and 4.0; structure, 3.1 and 4.2; and overall image quality, 3.1 and 4.2. The rs-EPI DWI sequence was associated with significantly better image quality and fewer susceptibility artifacts than was ss-EPI (all p < 0.05). The rs-EPI sequence was considered better overall in 90% of cases.
The technique of rs-EPI DWI combined with GRAPPA enables robust prostate imaging with high image quality and may provide great benefit in routine clinical practice. |
doi_str_mv | 10.2214/AJR.14.13489 |
format | Article |
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One hundred sixteen consecutively registered patients (mean age, 63.5 years; range 24-93 years) underwent 3-T MRI that included rs-EPI DWI and standard ss-EPI DWI with identical FOVs, slices, acceleration factors, b values, and image postprocessing procedure. The datasets were independently evaluated by two blinded radiologists. Images were evaluated for sharpness, anatomic distortion, imaging contrast, lesion conspicuity, detailed anatomic visualization, and overall image quality on a 5-point Likert scale (1, nondiagnostic; 5, excellent).
The kappa values were 0.73 for image sharpness, 0.71 for anatomic distortion, 0.54 for imaging contrast, 0.56 for lesion conspicuity, 0.61 for detailed anatomic visualization, and 0.63 for overall image quality (all p < 0.05), indicating moderate to substantial agreement between the two observers. The mean Likert scores for standard ss-EPI and rs-EPI were as follows: image sharpness, 2.9 and 4.6; distortion level, 2.8 and 4.4; contrast, 3.1 and 3.8; lesion conspicuity, 3.0 and 4.0; structure, 3.1 and 4.2; and overall image quality, 3.1 and 4.2. The rs-EPI DWI sequence was associated with significantly better image quality and fewer susceptibility artifacts than was ss-EPI (all p < 0.05). The rs-EPI sequence was considered better overall in 90% of cases.
The technique of rs-EPI DWI combined with GRAPPA enables robust prostate imaging with high image quality and may provide great benefit in routine clinical practice.</description><identifier>ISSN: 0361-803X</identifier><identifier>EISSN: 1546-3141</identifier><identifier>DOI: 10.2214/AJR.14.13489</identifier><identifier>PMID: 26102382</identifier><language>eng</language><publisher>United States</publisher><subject>Adult ; Aged ; Aged, 80 and over ; Diffusion Magnetic Resonance Imaging - methods ; Echo-Planar Imaging - methods ; Feasibility Studies ; Humans ; Image Interpretation, Computer-Assisted ; Male ; Middle Aged ; Prostatic Neoplasms - pathology</subject><ispartof>American journal of roentgenology (1976), 2015-07, Vol.205 (1), p.70-76</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-20d4fb2039d77ea1fdf436569e992df8fa3cad2dac8936d026360cc220b561a13</citedby><cites>FETCH-LOGICAL-c291t-20d4fb2039d77ea1fdf436569e992df8fa3cad2dac8936d026360cc220b561a13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,4106,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26102382$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Liang</creatorcontrib><creatorcontrib>Wang, Liang</creatorcontrib><creatorcontrib>Deng, Ming</creatorcontrib><creatorcontrib>Liu, Hui</creatorcontrib><creatorcontrib>Cai, Jie</creatorcontrib><creatorcontrib>Sah, Vivek Kumar</creatorcontrib><creatorcontrib>Liu, Jihong</creatorcontrib><title>Feasibility Study of 3-T DWI of the Prostate: Readout-Segmented Versus Single-Shot Echo-Planar Imaging</title><title>American journal of roentgenology (1976)</title><addtitle>AJR Am J Roentgenol</addtitle><description>The purpose of this prospective study was to assess the clinical utility of generalized autocalibrating partial parallel acquisition (GRAPPA)-accelerated readout-segmented echo-planar imaging (rs-EPI) DWI and compare it with standard single-shot EPI ( ss-EPI) DWI in visualization of the prostate during 3-T MRI.
One hundred sixteen consecutively registered patients (mean age, 63.5 years; range 24-93 years) underwent 3-T MRI that included rs-EPI DWI and standard ss-EPI DWI with identical FOVs, slices, acceleration factors, b values, and image postprocessing procedure. The datasets were independently evaluated by two blinded radiologists. Images were evaluated for sharpness, anatomic distortion, imaging contrast, lesion conspicuity, detailed anatomic visualization, and overall image quality on a 5-point Likert scale (1, nondiagnostic; 5, excellent).
The kappa values were 0.73 for image sharpness, 0.71 for anatomic distortion, 0.54 for imaging contrast, 0.56 for lesion conspicuity, 0.61 for detailed anatomic visualization, and 0.63 for overall image quality (all p < 0.05), indicating moderate to substantial agreement between the two observers. The mean Likert scores for standard ss-EPI and rs-EPI were as follows: image sharpness, 2.9 and 4.6; distortion level, 2.8 and 4.4; contrast, 3.1 and 3.8; lesion conspicuity, 3.0 and 4.0; structure, 3.1 and 4.2; and overall image quality, 3.1 and 4.2. The rs-EPI DWI sequence was associated with significantly better image quality and fewer susceptibility artifacts than was ss-EPI (all p < 0.05). The rs-EPI sequence was considered better overall in 90% of cases.
The technique of rs-EPI DWI combined with GRAPPA enables robust prostate imaging with high image quality and may provide great benefit in routine clinical practice.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Diffusion Magnetic Resonance Imaging - methods</subject><subject>Echo-Planar Imaging - methods</subject><subject>Feasibility Studies</subject><subject>Humans</subject><subject>Image Interpretation, Computer-Assisted</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Prostatic Neoplasms - pathology</subject><issn>0361-803X</issn><issn>1546-3141</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kE1PwkAQhjdGI4jePJs9enBxP9ql640gKIZEQvHj1my7s1DTUuxuD_x7i6Cnd5J58mbmQeia0T7nLLgfviz6LOgzEUTqBHVZGEgiWMBOUZcKyUhExWcHXTj3RSkdRGpwjjpcMspFxLvITkC7PM2L3O9w7Buzw5XFgizx48d0P_o14HldOa89POAFaFM1nsSwKmHjweB3qF3jcJxvVgWQeF15PM7WFZkXeqNrPC31ql1dojOrCwdXx-yht8l4OXoms9en6Wg4IxlXzBNOTWBTToUygwFoZo0NhAylAqW4sZHVItOGG51FSkhDuRSSZhnnNA0l00z00O2hd1tX3w04n5S5y6Boj4GqcQmTivGI01C26N0BzdrvXA022dZ5qetdwmiyN5u0ZpM2fs22-M2xuUlLMP_wn0rxAyIBcps</recordid><startdate>201507</startdate><enddate>201507</enddate><creator>Li, Liang</creator><creator>Wang, Liang</creator><creator>Deng, Ming</creator><creator>Liu, Hui</creator><creator>Cai, Jie</creator><creator>Sah, Vivek Kumar</creator><creator>Liu, Jihong</creator><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>201507</creationdate><title>Feasibility Study of 3-T DWI of the Prostate: Readout-Segmented Versus Single-Shot Echo-Planar Imaging</title><author>Li, Liang ; Wang, Liang ; Deng, Ming ; Liu, Hui ; Cai, Jie ; Sah, Vivek Kumar ; Liu, Jihong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c291t-20d4fb2039d77ea1fdf436569e992df8fa3cad2dac8936d026360cc220b561a13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Diffusion Magnetic Resonance Imaging - methods</topic><topic>Echo-Planar Imaging - methods</topic><topic>Feasibility Studies</topic><topic>Humans</topic><topic>Image Interpretation, Computer-Assisted</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Prostatic Neoplasms - pathology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Liang</creatorcontrib><creatorcontrib>Wang, Liang</creatorcontrib><creatorcontrib>Deng, Ming</creatorcontrib><creatorcontrib>Liu, Hui</creatorcontrib><creatorcontrib>Cai, Jie</creatorcontrib><creatorcontrib>Sah, Vivek Kumar</creatorcontrib><creatorcontrib>Liu, Jihong</creatorcontrib><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>American journal of roentgenology (1976)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Liang</au><au>Wang, Liang</au><au>Deng, Ming</au><au>Liu, Hui</au><au>Cai, Jie</au><au>Sah, Vivek Kumar</au><au>Liu, Jihong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Feasibility Study of 3-T DWI of the Prostate: Readout-Segmented Versus Single-Shot Echo-Planar Imaging</atitle><jtitle>American journal of roentgenology (1976)</jtitle><addtitle>AJR Am J Roentgenol</addtitle><date>2015-07</date><risdate>2015</risdate><volume>205</volume><issue>1</issue><spage>70</spage><epage>76</epage><pages>70-76</pages><issn>0361-803X</issn><eissn>1546-3141</eissn><abstract>The purpose of this prospective study was to assess the clinical utility of generalized autocalibrating partial parallel acquisition (GRAPPA)-accelerated readout-segmented echo-planar imaging (rs-EPI) DWI and compare it with standard single-shot EPI ( ss-EPI) DWI in visualization of the prostate during 3-T MRI.
One hundred sixteen consecutively registered patients (mean age, 63.5 years; range 24-93 years) underwent 3-T MRI that included rs-EPI DWI and standard ss-EPI DWI with identical FOVs, slices, acceleration factors, b values, and image postprocessing procedure. The datasets were independently evaluated by two blinded radiologists. Images were evaluated for sharpness, anatomic distortion, imaging contrast, lesion conspicuity, detailed anatomic visualization, and overall image quality on a 5-point Likert scale (1, nondiagnostic; 5, excellent).
The kappa values were 0.73 for image sharpness, 0.71 for anatomic distortion, 0.54 for imaging contrast, 0.56 for lesion conspicuity, 0.61 for detailed anatomic visualization, and 0.63 for overall image quality (all p < 0.05), indicating moderate to substantial agreement between the two observers. The mean Likert scores for standard ss-EPI and rs-EPI were as follows: image sharpness, 2.9 and 4.6; distortion level, 2.8 and 4.4; contrast, 3.1 and 3.8; lesion conspicuity, 3.0 and 4.0; structure, 3.1 and 4.2; and overall image quality, 3.1 and 4.2. The rs-EPI DWI sequence was associated with significantly better image quality and fewer susceptibility artifacts than was ss-EPI (all p < 0.05). The rs-EPI sequence was considered better overall in 90% of cases.
The technique of rs-EPI DWI combined with GRAPPA enables robust prostate imaging with high image quality and may provide great benefit in routine clinical practice.</abstract><cop>United States</cop><pmid>26102382</pmid><doi>10.2214/AJR.14.13489</doi><tpages>7</tpages></addata></record> |
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subjects | Adult Aged Aged, 80 and over Diffusion Magnetic Resonance Imaging - methods Echo-Planar Imaging - methods Feasibility Studies Humans Image Interpretation, Computer-Assisted Male Middle Aged Prostatic Neoplasms - pathology |
title | Feasibility Study of 3-T DWI of the Prostate: Readout-Segmented Versus Single-Shot Echo-Planar Imaging |
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