Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration
Endorectal coils (ERCs) are used for acquiring high spatial resolution magnetic resonance (MR) images of the human prostate. The goal of this study is to determine the impact of an expandable versus a rigid ERC on changes in the location and deformation of the prostate gland and subsequently on regi...
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| Veröffentlicht in: | Medical physics (Lancaster) 2005-12, Vol.32 (12), p.3569-3578 |
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| creator | Kim, Yongbok Hsu, I-Chow J. Pouliot, Jean Noworolski, Susan Moyher Vigneron, Daniel B. Kurhanewicz, John |
| description | Endorectal coils (ERCs) are used for acquiring high spatial resolution magnetic resonance (MR) images of the human prostate. The goal of this study is to determine the impact of an expandable versus a rigid ERC on changes in the location and deformation of the prostate gland and subsequently on registering prostate images acquired with and without an ERC. Sagittal and axial
T
2
weighted MR images were acquired from 25 patients receiving a combined MR imaging/MR spectroscopic imaging staging exam for prostate cancer. Within the same exam, images were acquired using an external pelvic phased array coil both alone and in combination with either an expandable ERC (MedRad, Pittsburgh, PA) or a rigid ERC (USA Instruments, Aurora, OH). Rotations, translations and deformations caused by the ERC were measured and compared. The ability to register images acquired with and without the ERC using a manual rigid-body registration was assessed using a similarity index (SI). Both ERCs caused the prostate to tilt anteriorly with an average tilt of
18.5
°
(
17.4
±
9.9
and
19.5
±
11.3
°
,
mean
±
standard
deviation
, for expandable and rigid ERC, respectively). However, the expandable coil caused a significantly larger distortion of the prostate as compared to the rigid coil; compressing the prostate in the anterior/posterior direction by
4.1
±
3.0
mm
vs
1.2
±
2.2
mm
(14.5% vs 4.8%)
(
p
<
0.0001
)
, and widening the prostate in the right/left direction by
3.8
±
3.7
mm
vs
1.5
±
3.1
mm
(8.3% vs 3.4%)
(
p
=
0.004
)
. Additionally, the ability to manually align prostate images acquired with and without ERC was significantly
(
p
<
0.0001
)
better for the rigid coil (
SI
=
0.941
±
0.008
vs
0.899
±
0.033
, for the rigid and expandable coils, respectively). In conclusion, the manual rigid-body alignment of prostate MR images acquired with and without the ERC can be improved through the use of a rigid ERC. |
| doi_str_mv | 10.1118/1.2122467 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmed_primary_16475755</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>70130333</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4467-fa0f00588d5150e107f4b8a7bc193e15ebd1f720c3caca9d3518e4e44c85f2303</originalsourceid><addsrcrecordid>eNp9kU9LAzEQxYMoWqsHv4DkJChsnewm3a0HQaRqQVFEzyGbTEpk212TrX--vdEuVJCay4OZX15mXgg5YDBgjBWnbJCyNOXDfIP0Up5nCU9htEl6ACOepBzEDtkN4QUAhpmAbbLDhjwXuRA94scfjZobVVZIo1Lvps5QnJvao25VRXXtqkBt7Wnj69CqFund4-SMTmaN0i2t56u6caGtfetibWXlZmqK1OM0Nr36bu6RLauqgPud9snz1fjp8ia5vb-eXF7cJprHVRKrwAKIojCCCUAGueVlofJSs1GGTGBpmM1T0JlWWo1MJliBHDnXhbBpBlmfHC1944CvCwytnLmgsarUHOtFkDmwSMXTJ8dLUMdNgkcrGx_H9p-SgfwOWDLZBRzZw850Uc7QrMgu0QgkS-DdVfi53knePXSG50s-aNf-5LP-zuqvZFT5E3A0OFln8Fb7Xw82xv4H_931C0XttZo</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>70130333</pqid></control><display><type>article</type><title>Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration</title><source>MEDLINE</source><source>Wiley Online Library All Journals</source><creator>Kim, Yongbok ; Hsu, I-Chow J. ; Pouliot, Jean ; Noworolski, Susan Moyher ; Vigneron, Daniel B. ; Kurhanewicz, John</creator><creatorcontrib>Kim, Yongbok ; Hsu, I-Chow J. ; Pouliot, Jean ; Noworolski, Susan Moyher ; Vigneron, Daniel B. ; Kurhanewicz, John</creatorcontrib><description>Endorectal coils (ERCs) are used for acquiring high spatial resolution magnetic resonance (MR) images of the human prostate. The goal of this study is to determine the impact of an expandable versus a rigid ERC on changes in the location and deformation of the prostate gland and subsequently on registering prostate images acquired with and without an ERC. Sagittal and axial
T
2
weighted MR images were acquired from 25 patients receiving a combined MR imaging/MR spectroscopic imaging staging exam for prostate cancer. Within the same exam, images were acquired using an external pelvic phased array coil both alone and in combination with either an expandable ERC (MedRad, Pittsburgh, PA) or a rigid ERC (USA Instruments, Aurora, OH). Rotations, translations and deformations caused by the ERC were measured and compared. The ability to register images acquired with and without the ERC using a manual rigid-body registration was assessed using a similarity index (SI). Both ERCs caused the prostate to tilt anteriorly with an average tilt of
18.5
°
(
17.4
±
9.9
and
19.5
±
11.3
°
,
mean
±
standard
deviation
, for expandable and rigid ERC, respectively). However, the expandable coil caused a significantly larger distortion of the prostate as compared to the rigid coil; compressing the prostate in the anterior/posterior direction by
4.1
±
3.0
mm
vs
1.2
±
2.2
mm
(14.5% vs 4.8%)
(
p
<
0.0001
)
, and widening the prostate in the right/left direction by
3.8
±
3.7
mm
vs
1.5
±
3.1
mm
(8.3% vs 3.4%)
(
p
=
0.004
)
. Additionally, the ability to manually align prostate images acquired with and without ERC was significantly
(
p
<
0.0001
)
better for the rigid coil (
SI
=
0.941
±
0.008
vs
0.899
±
0.033
, for the rigid and expandable coils, respectively). In conclusion, the manual rigid-body alignment of prostate MR images acquired with and without the ERC can be improved through the use of a rigid ERC.</description><identifier>ISSN: 0094-2405</identifier><identifier>EISSN: 2473-4209</identifier><identifier>DOI: 10.1118/1.2122467</identifier><identifier>PMID: 16475755</identifier><identifier>CODEN: MPHYA6</identifier><language>eng</language><publisher>United States: American Association of Physicists in Medicine</publisher><subject>Anatomy ; Antenna arrays ; biological organs ; biomechanics ; biomedical MRI ; Biophysical Phenomena ; Biophysics ; cancer ; coils ; expandable endorectal coil ; Humans ; Image analysis ; Image Processing, Computer-Assisted ; image registration ; Magnetic resonance imaging ; Magnetic Resonance Imaging - instrumentation ; Magnetic Resonance Spectroscopy - instrumentation ; Male ; Mechanical and electrical properties of tissues and organs ; Medical image spatial resolution ; Medical imaging ; Medical magnetic resonance imaging ; MRI ; Neoplasm Staging ; Phased array imaging ; prostate distortion ; Prostatic Neoplasms - diagnosis ; Prostatic Neoplasms - pathology ; rigid endorectal coil ; rigid image registration ; Spatial resolution ; tumours ; Ultrasonography</subject><ispartof>Medical physics (Lancaster), 2005-12, Vol.32 (12), p.3569-3578</ispartof><rights>American Association of Physicists in Medicine</rights><rights>2005 American Association of Physicists in Medicine</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4467-fa0f00588d5150e107f4b8a7bc193e15ebd1f720c3caca9d3518e4e44c85f2303</citedby><cites>FETCH-LOGICAL-c4467-fa0f00588d5150e107f4b8a7bc193e15ebd1f720c3caca9d3518e4e44c85f2303</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1118%2F1.2122467$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1118%2F1.2122467$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16475755$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Yongbok</creatorcontrib><creatorcontrib>Hsu, I-Chow J.</creatorcontrib><creatorcontrib>Pouliot, Jean</creatorcontrib><creatorcontrib>Noworolski, Susan Moyher</creatorcontrib><creatorcontrib>Vigneron, Daniel B.</creatorcontrib><creatorcontrib>Kurhanewicz, John</creatorcontrib><title>Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration</title><title>Medical physics (Lancaster)</title><addtitle>Med Phys</addtitle><description>Endorectal coils (ERCs) are used for acquiring high spatial resolution magnetic resonance (MR) images of the human prostate. The goal of this study is to determine the impact of an expandable versus a rigid ERC on changes in the location and deformation of the prostate gland and subsequently on registering prostate images acquired with and without an ERC. Sagittal and axial
T
2
weighted MR images were acquired from 25 patients receiving a combined MR imaging/MR spectroscopic imaging staging exam for prostate cancer. Within the same exam, images were acquired using an external pelvic phased array coil both alone and in combination with either an expandable ERC (MedRad, Pittsburgh, PA) or a rigid ERC (USA Instruments, Aurora, OH). Rotations, translations and deformations caused by the ERC were measured and compared. The ability to register images acquired with and without the ERC using a manual rigid-body registration was assessed using a similarity index (SI). Both ERCs caused the prostate to tilt anteriorly with an average tilt of
18.5
°
(
17.4
±
9.9
and
19.5
±
11.3
°
,
mean
±
standard
deviation
, for expandable and rigid ERC, respectively). However, the expandable coil caused a significantly larger distortion of the prostate as compared to the rigid coil; compressing the prostate in the anterior/posterior direction by
4.1
±
3.0
mm
vs
1.2
±
2.2
mm
(14.5% vs 4.8%)
(
p
<
0.0001
)
, and widening the prostate in the right/left direction by
3.8
±
3.7
mm
vs
1.5
±
3.1
mm
(8.3% vs 3.4%)
(
p
=
0.004
)
. Additionally, the ability to manually align prostate images acquired with and without ERC was significantly
(
p
<
0.0001
)
better for the rigid coil (
SI
=
0.941
±
0.008
vs
0.899
±
0.033
, for the rigid and expandable coils, respectively). In conclusion, the manual rigid-body alignment of prostate MR images acquired with and without the ERC can be improved through the use of a rigid ERC.</description><subject>Anatomy</subject><subject>Antenna arrays</subject><subject>biological organs</subject><subject>biomechanics</subject><subject>biomedical MRI</subject><subject>Biophysical Phenomena</subject><subject>Biophysics</subject><subject>cancer</subject><subject>coils</subject><subject>expandable endorectal coil</subject><subject>Humans</subject><subject>Image analysis</subject><subject>Image Processing, Computer-Assisted</subject><subject>image registration</subject><subject>Magnetic resonance imaging</subject><subject>Magnetic Resonance Imaging - instrumentation</subject><subject>Magnetic Resonance Spectroscopy - instrumentation</subject><subject>Male</subject><subject>Mechanical and electrical properties of tissues and organs</subject><subject>Medical image spatial resolution</subject><subject>Medical imaging</subject><subject>Medical magnetic resonance imaging</subject><subject>MRI</subject><subject>Neoplasm Staging</subject><subject>Phased array imaging</subject><subject>prostate distortion</subject><subject>Prostatic Neoplasms - diagnosis</subject><subject>Prostatic Neoplasms - pathology</subject><subject>rigid endorectal coil</subject><subject>rigid image registration</subject><subject>Spatial resolution</subject><subject>tumours</subject><subject>Ultrasonography</subject><issn>0094-2405</issn><issn>2473-4209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU9LAzEQxYMoWqsHv4DkJChsnewm3a0HQaRqQVFEzyGbTEpk212TrX--vdEuVJCay4OZX15mXgg5YDBgjBWnbJCyNOXDfIP0Up5nCU9htEl6ACOepBzEDtkN4QUAhpmAbbLDhjwXuRA94scfjZobVVZIo1Lvps5QnJvao25VRXXtqkBt7Wnj69CqFund4-SMTmaN0i2t56u6caGtfetibWXlZmqK1OM0Nr36bu6RLauqgPud9snz1fjp8ia5vb-eXF7cJprHVRKrwAKIojCCCUAGueVlofJSs1GGTGBpmM1T0JlWWo1MJliBHDnXhbBpBlmfHC1944CvCwytnLmgsarUHOtFkDmwSMXTJ8dLUMdNgkcrGx_H9p-SgfwOWDLZBRzZw850Uc7QrMgu0QgkS-DdVfi53knePXSG50s-aNf-5LP-zuqvZFT5E3A0OFln8Fb7Xw82xv4H_931C0XttZo</recordid><startdate>200512</startdate><enddate>200512</enddate><creator>Kim, Yongbok</creator><creator>Hsu, I-Chow J.</creator><creator>Pouliot, Jean</creator><creator>Noworolski, Susan Moyher</creator><creator>Vigneron, Daniel B.</creator><creator>Kurhanewicz, John</creator><general>American Association of Physicists in Medicine</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>7X8</scope></search><sort><creationdate>200512</creationdate><title>Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration</title><author>Kim, Yongbok ; Hsu, I-Chow J. ; Pouliot, Jean ; Noworolski, Susan Moyher ; Vigneron, Daniel B. ; Kurhanewicz, John</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4467-fa0f00588d5150e107f4b8a7bc193e15ebd1f720c3caca9d3518e4e44c85f2303</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Anatomy</topic><topic>Antenna arrays</topic><topic>biological organs</topic><topic>biomechanics</topic><topic>biomedical MRI</topic><topic>Biophysical Phenomena</topic><topic>Biophysics</topic><topic>cancer</topic><topic>coils</topic><topic>expandable endorectal coil</topic><topic>Humans</topic><topic>Image analysis</topic><topic>Image Processing, Computer-Assisted</topic><topic>image registration</topic><topic>Magnetic resonance imaging</topic><topic>Magnetic Resonance Imaging - instrumentation</topic><topic>Magnetic Resonance Spectroscopy - instrumentation</topic><topic>Male</topic><topic>Mechanical and electrical properties of tissues and organs</topic><topic>Medical image spatial resolution</topic><topic>Medical imaging</topic><topic>Medical magnetic resonance imaging</topic><topic>MRI</topic><topic>Neoplasm Staging</topic><topic>Phased array imaging</topic><topic>prostate distortion</topic><topic>Prostatic Neoplasms - diagnosis</topic><topic>Prostatic Neoplasms - pathology</topic><topic>rigid endorectal coil</topic><topic>rigid image registration</topic><topic>Spatial resolution</topic><topic>tumours</topic><topic>Ultrasonography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Yongbok</creatorcontrib><creatorcontrib>Hsu, I-Chow J.</creatorcontrib><creatorcontrib>Pouliot, Jean</creatorcontrib><creatorcontrib>Noworolski, Susan Moyher</creatorcontrib><creatorcontrib>Vigneron, Daniel B.</creatorcontrib><creatorcontrib>Kurhanewicz, John</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>Medical physics (Lancaster)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Yongbok</au><au>Hsu, I-Chow J.</au><au>Pouliot, Jean</au><au>Noworolski, Susan Moyher</au><au>Vigneron, Daniel B.</au><au>Kurhanewicz, John</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration</atitle><jtitle>Medical physics (Lancaster)</jtitle><addtitle>Med Phys</addtitle><date>2005-12</date><risdate>2005</risdate><volume>32</volume><issue>12</issue><spage>3569</spage><epage>3578</epage><pages>3569-3578</pages><issn>0094-2405</issn><eissn>2473-4209</eissn><coden>MPHYA6</coden><abstract>Endorectal coils (ERCs) are used for acquiring high spatial resolution magnetic resonance (MR) images of the human prostate. The goal of this study is to determine the impact of an expandable versus a rigid ERC on changes in the location and deformation of the prostate gland and subsequently on registering prostate images acquired with and without an ERC. Sagittal and axial
T
2
weighted MR images were acquired from 25 patients receiving a combined MR imaging/MR spectroscopic imaging staging exam for prostate cancer. Within the same exam, images were acquired using an external pelvic phased array coil both alone and in combination with either an expandable ERC (MedRad, Pittsburgh, PA) or a rigid ERC (USA Instruments, Aurora, OH). Rotations, translations and deformations caused by the ERC were measured and compared. The ability to register images acquired with and without the ERC using a manual rigid-body registration was assessed using a similarity index (SI). Both ERCs caused the prostate to tilt anteriorly with an average tilt of
18.5
°
(
17.4
±
9.9
and
19.5
±
11.3
°
,
mean
±
standard
deviation
, for expandable and rigid ERC, respectively). However, the expandable coil caused a significantly larger distortion of the prostate as compared to the rigid coil; compressing the prostate in the anterior/posterior direction by
4.1
±
3.0
mm
vs
1.2
±
2.2
mm
(14.5% vs 4.8%)
(
p
<
0.0001
)
, and widening the prostate in the right/left direction by
3.8
±
3.7
mm
vs
1.5
±
3.1
mm
(8.3% vs 3.4%)
(
p
=
0.004
)
. Additionally, the ability to manually align prostate images acquired with and without ERC was significantly
(
p
<
0.0001
)
better for the rigid coil (
SI
=
0.941
±
0.008
vs
0.899
±
0.033
, for the rigid and expandable coils, respectively). In conclusion, the manual rigid-body alignment of prostate MR images acquired with and without the ERC can be improved through the use of a rigid ERC.</abstract><cop>United States</cop><pub>American Association of Physicists in Medicine</pub><pmid>16475755</pmid><doi>10.1118/1.2122467</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-2405 |
| ispartof | Medical physics (Lancaster), 2005-12, Vol.32 (12), p.3569-3578 |
| issn | 0094-2405 2473-4209 |
| language | eng |
| recordid | cdi_pubmed_primary_16475755 |
| source | MEDLINE; Wiley Online Library All Journals |
| subjects | Anatomy Antenna arrays biological organs biomechanics biomedical MRI Biophysical Phenomena Biophysics cancer coils expandable endorectal coil Humans Image analysis Image Processing, Computer-Assisted image registration Magnetic resonance imaging Magnetic Resonance Imaging - instrumentation Magnetic Resonance Spectroscopy - instrumentation Male Mechanical and electrical properties of tissues and organs Medical image spatial resolution Medical imaging Medical magnetic resonance imaging MRI Neoplasm Staging Phased array imaging prostate distortion Prostatic Neoplasms - diagnosis Prostatic Neoplasms - pathology rigid endorectal coil rigid image registration Spatial resolution tumours Ultrasonography |
| title | Expandable and rigid endorectal coils for prostate MRI: Impact on prostate distortion and rigid image registration |
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