Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors

Purpose To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of magnetic resonance imaging 2017-09, Vol.46 (3), p.732-739
Hauptverfasser: Sakata, Akihiko, Fushimi, Yasutaka, Okada, Tomohisa, Arakawa, Yoshiki, Kunieda, Takeharu, Minamiguchi, Sachiko, Kido, Aki, Sakashita, Naotaka, Miyamoto, Susumu, Togashi, Kaori
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 739
container_issue 3
container_start_page 732
container_title Journal of magnetic resonance imaging
container_volume 46
creator Sakata, Akihiko
Fushimi, Yasutaka
Okada, Tomohisa
Arakawa, Yoshiki
Kunieda, Takeharu
Minamiguchi, Sachiko
Kido, Aki
Sakashita, Naotaka
Miyamoto, Susumu
Togashi, Kaori
description Purpose To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative grading in patients with brain tumor. Materials and Methods Institutional Review Board approval and written informed consent were obtained. Forty‐one patients with suspected brain tumors were enrolled in the study. Single‐voxel MRS and 2D APT imaging of the same slice level were conducted using a 3T MRI scanner. Positive or negative contrast enhancement on T1‐weighted images was assessed by two neuroradiologists. Correlations among metabolite concentrations, metabolite ratios, and calculated histogram parameters, including mean APT (APTmean) and the 90th percentile of APT (APT90) were assessed using Spearman's correlation coefficient. Diagnostic performance was evaluated with receiver operating characteristic (ROC) curve analysis for contrast enhancement and MRS and APT imaging. Values of P 
doi_str_mv 10.1002/jmri.25597
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1873721185</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1928329917</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4677-8e90c1daf02046a99e7af770a370b84970a8d7dd78919aeda6d221129b77be063</originalsourceid><addsrcrecordid>eNp9kd9OHCEUh0nTpv7rTR-gIemNMY4CszPApdm2VqMxMXpNGDizstmBKTDZ7Dv40GW76oUXvSCcwHe-HPgh9JWSM0oIO18O0Z2xppH8A9qnDWMVa0T7sdSkqSsqCN9DByktCSFSzprPaI8J1pTF9tHzD6cXPqTsDB4h9iEO2hvAHeQ1gMcm-Bx1yhj80_ZiAJ9P8RhDDh7f3uM0gskxJBPGzSnW3mI9OAuvROn1qYeI3aAXzi-w83jU2RVLwmuXn3AXdTnL0xBiOkKfer1K8OVlP0SPv34-zH9XN3eXV_OLm8rMWs4rAZIYanVPGJm1Wkrguuec6JqTTsxkqYTl1nIhqdRgdWsZo5TJjvMOSFsfouOdt0z5Z4KU1eCSgdVKewhTUlTwmpcO0RT0-zt0Gaboy3SKSiZqJiXlhTrZUaZ8RYrQqzGWF8eNokRtM1LbjNS_jAr87UU5dQPYN_Q1lALQHbB2K9j8R6Wub--vdtK_1D-erA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1928329917</pqid></control><display><type>article</type><title>Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors</title><source>MEDLINE</source><source>Wiley Online Library Free Content</source><source>Wiley Online Library All Journals</source><creator>Sakata, Akihiko ; Fushimi, Yasutaka ; Okada, Tomohisa ; Arakawa, Yoshiki ; Kunieda, Takeharu ; Minamiguchi, Sachiko ; Kido, Aki ; Sakashita, Naotaka ; Miyamoto, Susumu ; Togashi, Kaori</creator><creatorcontrib>Sakata, Akihiko ; Fushimi, Yasutaka ; Okada, Tomohisa ; Arakawa, Yoshiki ; Kunieda, Takeharu ; Minamiguchi, Sachiko ; Kido, Aki ; Sakashita, Naotaka ; Miyamoto, Susumu ; Togashi, Kaori</creatorcontrib><description>Purpose To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative grading in patients with brain tumor. Materials and Methods Institutional Review Board approval and written informed consent were obtained. Forty‐one patients with suspected brain tumors were enrolled in the study. Single‐voxel MRS and 2D APT imaging of the same slice level were conducted using a 3T MRI scanner. Positive or negative contrast enhancement on T1‐weighted images was assessed by two neuroradiologists. Correlations among metabolite concentrations, metabolite ratios, and calculated histogram parameters, including mean APT (APTmean) and the 90th percentile of APT (APT90) were assessed using Spearman's correlation coefficient. Diagnostic performance was evaluated with receiver operating characteristic (ROC) curve analysis for contrast enhancement and MRS and APT imaging. Values of P &lt; 0.05 were considered statistically significant. Results Positive correlations with statistical significance were found between total concentration of choline (Cho) and APT90 (r = 0.49), and between Cho/creatine (Cr) and APTmean (r = 0.65) as well as APT90 (r = 0.49). A negative correlation with statistical significance was observed between NAA/Cr and APTmean (r = −0.52). According to ROC curves, Cho/Cr, APTmean, APT90, demonstrated higher area under the curve (AUC) values than that of contrast enhancement in grading gliomas. Conclusion Significant correlations were observed between metabolite concentrations and ratios on MRS and APT values. MRS and APT imaging showed comparable diagnostic capability for grading brain tumors, suggesting that both MRS and APT imaging offer potential for quantitatively assessing similar biological characteristics in brain tumors on noncontrast MRI. Level of Evidence: 2 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:732–739</description><identifier>ISSN: 1053-1807</identifier><identifier>EISSN: 1522-2586</identifier><identifier>DOI: 10.1002/jmri.25597</identifier><identifier>PMID: 28252822</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>Adolescent ; Adult ; Aged ; Aged, 80 and over ; amide proton transfer imaging ; Brain ; Brain - diagnostic imaging ; Brain cancer ; Brain Neoplasms - diagnostic imaging ; Brain tumors ; chemical exchange saturation transfer ; Child ; Choline ; Contrast Media ; Correlation coefficient ; Correlation coefficients ; Creatine ; Diagnostic systems ; Evaluation ; Female ; Glioma ; Grading ; Humans ; Image contrast ; Image enhancement ; Image Enhancement - methods ; Informed consent ; Magnetic resonance imaging ; Magnetic resonance spectroscopy ; Male ; Mathematical analysis ; Middle Aged ; Neuroimaging ; Patients ; Proton Magnetic Resonance Spectroscopy - methods ; Reproducibility of Results ; Sensitivity and Specificity ; Spectroscopic analysis ; Spectroscopy ; Spectrum analysis ; Statistical analysis ; Statistical significance ; Statistics ; Tumors ; Young Adult</subject><ispartof>Journal of magnetic resonance imaging, 2017-09, Vol.46 (3), p.732-739</ispartof><rights>2017 International Society for Magnetic Resonance in Medicine</rights><rights>2017 International Society for Magnetic Resonance in Medicine.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4677-8e90c1daf02046a99e7af770a370b84970a8d7dd78919aeda6d221129b77be063</citedby><cites>FETCH-LOGICAL-c4677-8e90c1daf02046a99e7af770a370b84970a8d7dd78919aeda6d221129b77be063</cites><orcidid>0000-0002-1982-3168</orcidid></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.25597$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjmri.25597$$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/28252822$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sakata, Akihiko</creatorcontrib><creatorcontrib>Fushimi, Yasutaka</creatorcontrib><creatorcontrib>Okada, Tomohisa</creatorcontrib><creatorcontrib>Arakawa, Yoshiki</creatorcontrib><creatorcontrib>Kunieda, Takeharu</creatorcontrib><creatorcontrib>Minamiguchi, Sachiko</creatorcontrib><creatorcontrib>Kido, Aki</creatorcontrib><creatorcontrib>Sakashita, Naotaka</creatorcontrib><creatorcontrib>Miyamoto, Susumu</creatorcontrib><creatorcontrib>Togashi, Kaori</creatorcontrib><title>Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors</title><title>Journal of magnetic resonance imaging</title><addtitle>J Magn Reson Imaging</addtitle><description>Purpose To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative grading in patients with brain tumor. Materials and Methods Institutional Review Board approval and written informed consent were obtained. Forty‐one patients with suspected brain tumors were enrolled in the study. Single‐voxel MRS and 2D APT imaging of the same slice level were conducted using a 3T MRI scanner. Positive or negative contrast enhancement on T1‐weighted images was assessed by two neuroradiologists. Correlations among metabolite concentrations, metabolite ratios, and calculated histogram parameters, including mean APT (APTmean) and the 90th percentile of APT (APT90) were assessed using Spearman's correlation coefficient. Diagnostic performance was evaluated with receiver operating characteristic (ROC) curve analysis for contrast enhancement and MRS and APT imaging. Values of P &lt; 0.05 were considered statistically significant. Results Positive correlations with statistical significance were found between total concentration of choline (Cho) and APT90 (r = 0.49), and between Cho/creatine (Cr) and APTmean (r = 0.65) as well as APT90 (r = 0.49). A negative correlation with statistical significance was observed between NAA/Cr and APTmean (r = −0.52). According to ROC curves, Cho/Cr, APTmean, APT90, demonstrated higher area under the curve (AUC) values than that of contrast enhancement in grading gliomas. Conclusion Significant correlations were observed between metabolite concentrations and ratios on MRS and APT values. MRS and APT imaging showed comparable diagnostic capability for grading brain tumors, suggesting that both MRS and APT imaging offer potential for quantitatively assessing similar biological characteristics in brain tumors on noncontrast MRI. Level of Evidence: 2 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:732–739</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>amide proton transfer imaging</subject><subject>Brain</subject><subject>Brain - diagnostic imaging</subject><subject>Brain cancer</subject><subject>Brain Neoplasms - diagnostic imaging</subject><subject>Brain tumors</subject><subject>chemical exchange saturation transfer</subject><subject>Child</subject><subject>Choline</subject><subject>Contrast Media</subject><subject>Correlation coefficient</subject><subject>Correlation coefficients</subject><subject>Creatine</subject><subject>Diagnostic systems</subject><subject>Evaluation</subject><subject>Female</subject><subject>Glioma</subject><subject>Grading</subject><subject>Humans</subject><subject>Image contrast</subject><subject>Image enhancement</subject><subject>Image Enhancement - methods</subject><subject>Informed consent</subject><subject>Magnetic resonance imaging</subject><subject>Magnetic resonance spectroscopy</subject><subject>Male</subject><subject>Mathematical analysis</subject><subject>Middle Aged</subject><subject>Neuroimaging</subject><subject>Patients</subject><subject>Proton Magnetic Resonance Spectroscopy - methods</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Spectroscopic analysis</subject><subject>Spectroscopy</subject><subject>Spectrum analysis</subject><subject>Statistical analysis</subject><subject>Statistical significance</subject><subject>Statistics</subject><subject>Tumors</subject><subject>Young Adult</subject><issn>1053-1807</issn><issn>1522-2586</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kd9OHCEUh0nTpv7rTR-gIemNMY4CszPApdm2VqMxMXpNGDizstmBKTDZ7Dv40GW76oUXvSCcwHe-HPgh9JWSM0oIO18O0Z2xppH8A9qnDWMVa0T7sdSkqSsqCN9DByktCSFSzprPaI8J1pTF9tHzD6cXPqTsDB4h9iEO2hvAHeQ1gMcm-Bx1yhj80_ZiAJ9P8RhDDh7f3uM0gskxJBPGzSnW3mI9OAuvROn1qYeI3aAXzi-w83jU2RVLwmuXn3AXdTnL0xBiOkKfer1K8OVlP0SPv34-zH9XN3eXV_OLm8rMWs4rAZIYanVPGJm1Wkrguuec6JqTTsxkqYTl1nIhqdRgdWsZo5TJjvMOSFsfouOdt0z5Z4KU1eCSgdVKewhTUlTwmpcO0RT0-zt0Gaboy3SKSiZqJiXlhTrZUaZ8RYrQqzGWF8eNokRtM1LbjNS_jAr87UU5dQPYN_Q1lALQHbB2K9j8R6Wub--vdtK_1D-erA</recordid><startdate>201709</startdate><enddate>201709</enddate><creator>Sakata, Akihiko</creator><creator>Fushimi, Yasutaka</creator><creator>Okada, Tomohisa</creator><creator>Arakawa, Yoshiki</creator><creator>Kunieda, Takeharu</creator><creator>Minamiguchi, Sachiko</creator><creator>Kido, Aki</creator><creator>Sakashita, Naotaka</creator><creator>Miyamoto, Susumu</creator><creator>Togashi, Kaori</creator><general>Wiley Subscription Services, Inc</general><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>7TK</scope><scope>8FD</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-1982-3168</orcidid></search><sort><creationdate>201709</creationdate><title>Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors</title><author>Sakata, Akihiko ; Fushimi, Yasutaka ; Okada, Tomohisa ; Arakawa, Yoshiki ; Kunieda, Takeharu ; Minamiguchi, Sachiko ; Kido, Aki ; Sakashita, Naotaka ; Miyamoto, Susumu ; Togashi, Kaori</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4677-8e90c1daf02046a99e7af770a370b84970a8d7dd78919aeda6d221129b77be063</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>amide proton transfer imaging</topic><topic>Brain</topic><topic>Brain - diagnostic imaging</topic><topic>Brain cancer</topic><topic>Brain Neoplasms - diagnostic imaging</topic><topic>Brain tumors</topic><topic>chemical exchange saturation transfer</topic><topic>Child</topic><topic>Choline</topic><topic>Contrast Media</topic><topic>Correlation coefficient</topic><topic>Correlation coefficients</topic><topic>Creatine</topic><topic>Diagnostic systems</topic><topic>Evaluation</topic><topic>Female</topic><topic>Glioma</topic><topic>Grading</topic><topic>Humans</topic><topic>Image contrast</topic><topic>Image enhancement</topic><topic>Image Enhancement - methods</topic><topic>Informed consent</topic><topic>Magnetic resonance imaging</topic><topic>Magnetic resonance spectroscopy</topic><topic>Male</topic><topic>Mathematical analysis</topic><topic>Middle Aged</topic><topic>Neuroimaging</topic><topic>Patients</topic><topic>Proton Magnetic Resonance Spectroscopy - methods</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Spectroscopic analysis</topic><topic>Spectroscopy</topic><topic>Spectrum analysis</topic><topic>Statistical analysis</topic><topic>Statistical significance</topic><topic>Statistics</topic><topic>Tumors</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sakata, Akihiko</creatorcontrib><creatorcontrib>Fushimi, Yasutaka</creatorcontrib><creatorcontrib>Okada, Tomohisa</creatorcontrib><creatorcontrib>Arakawa, Yoshiki</creatorcontrib><creatorcontrib>Kunieda, Takeharu</creatorcontrib><creatorcontrib>Minamiguchi, Sachiko</creatorcontrib><creatorcontrib>Kido, Aki</creatorcontrib><creatorcontrib>Sakashita, Naotaka</creatorcontrib><creatorcontrib>Miyamoto, Susumu</creatorcontrib><creatorcontrib>Togashi, Kaori</creatorcontrib><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>Neurosciences Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</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>Sakata, Akihiko</au><au>Fushimi, Yasutaka</au><au>Okada, Tomohisa</au><au>Arakawa, Yoshiki</au><au>Kunieda, Takeharu</au><au>Minamiguchi, Sachiko</au><au>Kido, Aki</au><au>Sakashita, Naotaka</au><au>Miyamoto, Susumu</au><au>Togashi, Kaori</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors</atitle><jtitle>Journal of magnetic resonance imaging</jtitle><addtitle>J Magn Reson Imaging</addtitle><date>2017-09</date><risdate>2017</risdate><volume>46</volume><issue>3</issue><spage>732</spage><epage>739</epage><pages>732-739</pages><issn>1053-1807</issn><eissn>1522-2586</eissn><abstract>Purpose To explore the relationship among parameters of magnetic resonance spectroscopy (MRS) and amide proton transfer (APT) imaging, and to assess the diagnostic performance of MRS and APT imaging for grading brain tumors in comparison with contrast enhancement of conventional MRI for preoperative grading in patients with brain tumor. Materials and Methods Institutional Review Board approval and written informed consent were obtained. Forty‐one patients with suspected brain tumors were enrolled in the study. Single‐voxel MRS and 2D APT imaging of the same slice level were conducted using a 3T MRI scanner. Positive or negative contrast enhancement on T1‐weighted images was assessed by two neuroradiologists. Correlations among metabolite concentrations, metabolite ratios, and calculated histogram parameters, including mean APT (APTmean) and the 90th percentile of APT (APT90) were assessed using Spearman's correlation coefficient. Diagnostic performance was evaluated with receiver operating characteristic (ROC) curve analysis for contrast enhancement and MRS and APT imaging. Values of P &lt; 0.05 were considered statistically significant. Results Positive correlations with statistical significance were found between total concentration of choline (Cho) and APT90 (r = 0.49), and between Cho/creatine (Cr) and APTmean (r = 0.65) as well as APT90 (r = 0.49). A negative correlation with statistical significance was observed between NAA/Cr and APTmean (r = −0.52). According to ROC curves, Cho/Cr, APTmean, APT90, demonstrated higher area under the curve (AUC) values than that of contrast enhancement in grading gliomas. Conclusion Significant correlations were observed between metabolite concentrations and ratios on MRS and APT values. MRS and APT imaging showed comparable diagnostic capability for grading brain tumors, suggesting that both MRS and APT imaging offer potential for quantitatively assessing similar biological characteristics in brain tumors on noncontrast MRI. Level of Evidence: 2 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:732–739</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>28252822</pmid><doi>10.1002/jmri.25597</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-1982-3168</orcidid><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 1053-1807
ispartof Journal of magnetic resonance imaging, 2017-09, Vol.46 (3), p.732-739
issn 1053-1807
1522-2586
language eng
recordid cdi_proquest_miscellaneous_1873721185
source MEDLINE; Wiley Online Library Free Content; Wiley Online Library All Journals
subjects Adolescent
Adult
Aged
Aged, 80 and over
amide proton transfer imaging
Brain
Brain - diagnostic imaging
Brain cancer
Brain Neoplasms - diagnostic imaging
Brain tumors
chemical exchange saturation transfer
Child
Choline
Contrast Media
Correlation coefficient
Correlation coefficients
Creatine
Diagnostic systems
Evaluation
Female
Glioma
Grading
Humans
Image contrast
Image enhancement
Image Enhancement - methods
Informed consent
Magnetic resonance imaging
Magnetic resonance spectroscopy
Male
Mathematical analysis
Middle Aged
Neuroimaging
Patients
Proton Magnetic Resonance Spectroscopy - methods
Reproducibility of Results
Sensitivity and Specificity
Spectroscopic analysis
Spectroscopy
Spectrum analysis
Statistical analysis
Statistical significance
Statistics
Tumors
Young Adult
title Diagnostic performance between contrast enhancement, proton MR spectroscopy, and amide proton transfer imaging in patients with brain tumors
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-04T08%3A50%3A05IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Diagnostic%20performance%20between%20contrast%20enhancement,%20proton%20MR%20spectroscopy,%20and%20amide%20proton%20transfer%20imaging%20in%20patients%20with%20brain%20tumors&rft.jtitle=Journal%20of%20magnetic%20resonance%20imaging&rft.au=Sakata,%20Akihiko&rft.date=2017-09&rft.volume=46&rft.issue=3&rft.spage=732&rft.epage=739&rft.pages=732-739&rft.issn=1053-1807&rft.eissn=1522-2586&rft_id=info:doi/10.1002/jmri.25597&rft_dat=%3Cproquest_cross%3E1928329917%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1928329917&rft_id=info:pmid/28252822&rfr_iscdi=true