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Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T
Objective To compare integrated slice-specific dynamic shim (iShim) with distortion correction post-processing to conventional 3D volume shim for the reduction of artefacts and signal loss in 1.5 T whole-body diffusion-weighted imaging (WB-DWI). Methods Ten volunteers underwent WB-DWI using conventi...
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| Published in: | Magma (New York, N.Y.) N.Y.), 2021-08, Vol.34 (4), p.513-521 |
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| cites | cdi_FETCH-LOGICAL-c446t-f2ba1667ea7b55a93ecbbc144ab5ae5abf5db2b1e7d76f7107649e867b6ecaae3 |
| container_end_page | 521 |
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| container_title | Magma (New York, N.Y.) |
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| creator | McElroy, Sarah Winfield, Jessica M. Westerland, Olwen Charles-Edwards, Geoff Bell, Joanna Neji, Radhouene Stemmer, Alto Kiefer, Berthold Streetly, Matthew Goh, Vicky |
| description | Objective
To compare integrated slice-specific dynamic shim (iShim) with distortion correction post-processing to conventional 3D volume shim for the reduction of artefacts and signal loss in 1.5 T whole-body diffusion-weighted imaging (WB-DWI).
Methods
Ten volunteers underwent WB-DWI using conventional 3D volume shim and iShim. Forty-eight consecutive patients underwent WB-DWI with either volume shim (
n
= 24) or iShim (
n
= 24) only. For all subjects, displacement of the spinal cord at imaging station interfaces was measured on composed
b
= 900 s/mm
2
images. The signal intensity ratios, computed as the average signal intensity in a region of high susceptibility gradient (sternum) divided by the average signal intensity in a region of low susceptibility gradient (vertebral body), were compared in volunteers. For patients, image quality was graded from 1 to 5 (1 = Poor, 5 = Excellent). Signal intensity discontinuity scores were recorded from 1 to 4 (1 = 2 + steps, 4 = 0 steps). A
p
value of |
| doi_str_mv | 10.1007/s10334-020-00898-6 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_8338872</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2473410771</sourcerecordid><originalsourceid>FETCH-LOGICAL-c446t-f2ba1667ea7b55a93ecbbc144ab5ae5abf5db2b1e7d76f7107649e867b6ecaae3</originalsourceid><addsrcrecordid>eNp9kc9u1DAQhy0EokvhBTigHLm42PG_5IKEKiiVipBQOVu2M866SuzFTlrt2_AsPFm9bKngwmkO8803o_kh9JqSM0qIelcoYYxj0hJMSNd3WD5BG8pEizsp6VO0Ib3ssGg5O0EvSrkhpKWCsOfohDEmhKL9BpnLuMCYzQJDU6bgAJcduOCDa4Z9NHOtZRvmOcSx8Sk3d9s0AbZp2DdD8H4tIUV8B2HcHgxfvjVhNuMBNktDz8Svn9cv0TNvpgKvHuop-v7p4_X5Z3z19eLy_MMVdpzLBfvWGiqlAqOsEKZn4Kx1lHNjhQFhrBeDbS0FNSjpFSVK8h46qawEZwywU_T-6N2tdobBQVyymfQu14vyXicT9L-dGLZ6TLe6Y6zrVFsFbx8EOf1YoSx6DsXBNJkIaS265YrxulfRirZH1OVUSgb_uIYSfchGH7PRNRv9Oxst69Cbvw98HPkTRgXYESi1FUfI-iatOdan_U97D1k1nYc</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2473410771</pqid></control><display><type>article</type><title>Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T</title><source>Springer Link</source><creator>McElroy, Sarah ; Winfield, Jessica M. ; Westerland, Olwen ; Charles-Edwards, Geoff ; Bell, Joanna ; Neji, Radhouene ; Stemmer, Alto ; Kiefer, Berthold ; Streetly, Matthew ; Goh, Vicky</creator><creatorcontrib>McElroy, Sarah ; Winfield, Jessica M. ; Westerland, Olwen ; Charles-Edwards, Geoff ; Bell, Joanna ; Neji, Radhouene ; Stemmer, Alto ; Kiefer, Berthold ; Streetly, Matthew ; Goh, Vicky</creatorcontrib><description>Objective
To compare integrated slice-specific dynamic shim (iShim) with distortion correction post-processing to conventional 3D volume shim for the reduction of artefacts and signal loss in 1.5 T whole-body diffusion-weighted imaging (WB-DWI).
Methods
Ten volunteers underwent WB-DWI using conventional 3D volume shim and iShim. Forty-eight consecutive patients underwent WB-DWI with either volume shim (
n
= 24) or iShim (
n
= 24) only. For all subjects, displacement of the spinal cord at imaging station interfaces was measured on composed
b
= 900 s/mm
2
images. The signal intensity ratios, computed as the average signal intensity in a region of high susceptibility gradient (sternum) divided by the average signal intensity in a region of low susceptibility gradient (vertebral body), were compared in volunteers. For patients, image quality was graded from 1 to 5 (1 = Poor, 5 = Excellent). Signal intensity discontinuity scores were recorded from 1 to 4 (1 = 2 + steps, 4 = 0 steps). A
p
value of < 0.05 was considered significant.
Results
Spinal cord displacement artefacts were lower with iShim (
p
< 0.05) at the thoracic junction in volunteers and at the cervical and thoracic junctions in patients (
p
< 0.05). The sternum/vertebra signal intensity ratio in healthy volunteers was higher with iShim compared with the volume shim sequence (
p
< 0.05). There were no significant differences between the volume shim and iShim patient groups in terms of image quality and signal intensity discontinuity scores.
Conclusion
iShim reduced the degree of spinal cord displacement artefact between imaging stations and susceptibility-gradient-induced signal loss.</description><identifier>ISSN: 0968-5243</identifier><identifier>EISSN: 1352-8661</identifier><identifier>DOI: 10.1007/s10334-020-00898-6</identifier><identifier>PMID: 33355719</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Biomedical Engineering and Bioengineering ; Clinical Applications - Oncology ; Computer Appl. in Life Sciences ; Health Informatics ; Imaging ; Medicine ; Medicine & Public Health ; Radiology ; Research Article ; Solid State Physics</subject><ispartof>Magma (New York, N.Y.), 2021-08, Vol.34 (4), p.513-521</ispartof><rights>The Author(s) 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-f2ba1667ea7b55a93ecbbc144ab5ae5abf5db2b1e7d76f7107649e867b6ecaae3</citedby><cites>FETCH-LOGICAL-c446t-f2ba1667ea7b55a93ecbbc144ab5ae5abf5db2b1e7d76f7107649e867b6ecaae3</cites><orcidid>0000-0002-4271-5931</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33355719$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>McElroy, Sarah</creatorcontrib><creatorcontrib>Winfield, Jessica M.</creatorcontrib><creatorcontrib>Westerland, Olwen</creatorcontrib><creatorcontrib>Charles-Edwards, Geoff</creatorcontrib><creatorcontrib>Bell, Joanna</creatorcontrib><creatorcontrib>Neji, Radhouene</creatorcontrib><creatorcontrib>Stemmer, Alto</creatorcontrib><creatorcontrib>Kiefer, Berthold</creatorcontrib><creatorcontrib>Streetly, Matthew</creatorcontrib><creatorcontrib>Goh, Vicky</creatorcontrib><title>Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T</title><title>Magma (New York, N.Y.)</title><addtitle>Magn Reson Mater Phy</addtitle><addtitle>MAGMA</addtitle><description>Objective
To compare integrated slice-specific dynamic shim (iShim) with distortion correction post-processing to conventional 3D volume shim for the reduction of artefacts and signal loss in 1.5 T whole-body diffusion-weighted imaging (WB-DWI).
Methods
Ten volunteers underwent WB-DWI using conventional 3D volume shim and iShim. Forty-eight consecutive patients underwent WB-DWI with either volume shim (
n
= 24) or iShim (
n
= 24) only. For all subjects, displacement of the spinal cord at imaging station interfaces was measured on composed
b
= 900 s/mm
2
images. The signal intensity ratios, computed as the average signal intensity in a region of high susceptibility gradient (sternum) divided by the average signal intensity in a region of low susceptibility gradient (vertebral body), were compared in volunteers. For patients, image quality was graded from 1 to 5 (1 = Poor, 5 = Excellent). Signal intensity discontinuity scores were recorded from 1 to 4 (1 = 2 + steps, 4 = 0 steps). A
p
value of < 0.05 was considered significant.
Results
Spinal cord displacement artefacts were lower with iShim (
p
< 0.05) at the thoracic junction in volunteers and at the cervical and thoracic junctions in patients (
p
< 0.05). The sternum/vertebra signal intensity ratio in healthy volunteers was higher with iShim compared with the volume shim sequence (
p
< 0.05). There were no significant differences between the volume shim and iShim patient groups in terms of image quality and signal intensity discontinuity scores.
Conclusion
iShim reduced the degree of spinal cord displacement artefact between imaging stations and susceptibility-gradient-induced signal loss.</description><subject>Biomedical Engineering and Bioengineering</subject><subject>Clinical Applications - Oncology</subject><subject>Computer Appl. in Life Sciences</subject><subject>Health Informatics</subject><subject>Imaging</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Radiology</subject><subject>Research Article</subject><subject>Solid State Physics</subject><issn>0968-5243</issn><issn>1352-8661</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kc9u1DAQhy0EokvhBTigHLm42PG_5IKEKiiVipBQOVu2M866SuzFTlrt2_AsPFm9bKngwmkO8803o_kh9JqSM0qIelcoYYxj0hJMSNd3WD5BG8pEizsp6VO0Ib3ssGg5O0EvSrkhpKWCsOfohDEmhKL9BpnLuMCYzQJDU6bgAJcduOCDa4Z9NHOtZRvmOcSx8Sk3d9s0AbZp2DdD8H4tIUV8B2HcHgxfvjVhNuMBNktDz8Svn9cv0TNvpgKvHuop-v7p4_X5Z3z19eLy_MMVdpzLBfvWGiqlAqOsEKZn4Kx1lHNjhQFhrBeDbS0FNSjpFSVK8h46qawEZwywU_T-6N2tdobBQVyymfQu14vyXicT9L-dGLZ6TLe6Y6zrVFsFbx8EOf1YoSx6DsXBNJkIaS265YrxulfRirZH1OVUSgb_uIYSfchGH7PRNRv9Oxst69Cbvw98HPkTRgXYESi1FUfI-iatOdan_U97D1k1nYc</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>McElroy, Sarah</creator><creator>Winfield, Jessica M.</creator><creator>Westerland, Olwen</creator><creator>Charles-Edwards, Geoff</creator><creator>Bell, Joanna</creator><creator>Neji, Radhouene</creator><creator>Stemmer, Alto</creator><creator>Kiefer, Berthold</creator><creator>Streetly, Matthew</creator><creator>Goh, Vicky</creator><general>Springer International Publishing</general><scope>C6C</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-4271-5931</orcidid></search><sort><creationdate>20210801</creationdate><title>Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T</title><author>McElroy, Sarah ; Winfield, Jessica M. ; Westerland, Olwen ; Charles-Edwards, Geoff ; Bell, Joanna ; Neji, Radhouene ; Stemmer, Alto ; Kiefer, Berthold ; Streetly, Matthew ; Goh, Vicky</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c446t-f2ba1667ea7b55a93ecbbc144ab5ae5abf5db2b1e7d76f7107649e867b6ecaae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Biomedical Engineering and Bioengineering</topic><topic>Clinical Applications - Oncology</topic><topic>Computer Appl. in Life Sciences</topic><topic>Health Informatics</topic><topic>Imaging</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Radiology</topic><topic>Research Article</topic><topic>Solid State Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McElroy, Sarah</creatorcontrib><creatorcontrib>Winfield, Jessica M.</creatorcontrib><creatorcontrib>Westerland, Olwen</creatorcontrib><creatorcontrib>Charles-Edwards, Geoff</creatorcontrib><creatorcontrib>Bell, Joanna</creatorcontrib><creatorcontrib>Neji, Radhouene</creatorcontrib><creatorcontrib>Stemmer, Alto</creatorcontrib><creatorcontrib>Kiefer, Berthold</creatorcontrib><creatorcontrib>Streetly, Matthew</creatorcontrib><creatorcontrib>Goh, Vicky</creatorcontrib><collection>SpringerOpen</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Magma (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McElroy, Sarah</au><au>Winfield, Jessica M.</au><au>Westerland, Olwen</au><au>Charles-Edwards, Geoff</au><au>Bell, Joanna</au><au>Neji, Radhouene</au><au>Stemmer, Alto</au><au>Kiefer, Berthold</au><au>Streetly, Matthew</au><au>Goh, Vicky</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T</atitle><jtitle>Magma (New York, N.Y.)</jtitle><stitle>Magn Reson Mater Phy</stitle><addtitle>MAGMA</addtitle><date>2021-08-01</date><risdate>2021</risdate><volume>34</volume><issue>4</issue><spage>513</spage><epage>521</epage><pages>513-521</pages><issn>0968-5243</issn><eissn>1352-8661</eissn><abstract>Objective
To compare integrated slice-specific dynamic shim (iShim) with distortion correction post-processing to conventional 3D volume shim for the reduction of artefacts and signal loss in 1.5 T whole-body diffusion-weighted imaging (WB-DWI).
Methods
Ten volunteers underwent WB-DWI using conventional 3D volume shim and iShim. Forty-eight consecutive patients underwent WB-DWI with either volume shim (
n
= 24) or iShim (
n
= 24) only. For all subjects, displacement of the spinal cord at imaging station interfaces was measured on composed
b
= 900 s/mm
2
images. The signal intensity ratios, computed as the average signal intensity in a region of high susceptibility gradient (sternum) divided by the average signal intensity in a region of low susceptibility gradient (vertebral body), were compared in volunteers. For patients, image quality was graded from 1 to 5 (1 = Poor, 5 = Excellent). Signal intensity discontinuity scores were recorded from 1 to 4 (1 = 2 + steps, 4 = 0 steps). A
p
value of < 0.05 was considered significant.
Results
Spinal cord displacement artefacts were lower with iShim (
p
< 0.05) at the thoracic junction in volunteers and at the cervical and thoracic junctions in patients (
p
< 0.05). The sternum/vertebra signal intensity ratio in healthy volunteers was higher with iShim compared with the volume shim sequence (
p
< 0.05). There were no significant differences between the volume shim and iShim patient groups in terms of image quality and signal intensity discontinuity scores.
Conclusion
iShim reduced the degree of spinal cord displacement artefact between imaging stations and susceptibility-gradient-induced signal loss.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><pmid>33355719</pmid><doi>10.1007/s10334-020-00898-6</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-4271-5931</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_8338872 |
| source | Springer Link |
| subjects | Biomedical Engineering and Bioengineering Clinical Applications - Oncology Computer Appl. in Life Sciences Health Informatics Imaging Medicine Medicine & Public Health Radiology Research Article Solid State Physics |
| title | Integrated slice-specific dynamic shimming for whole-body diffusion-weighted MR imaging at 1.5 T |
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