Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator
Identifieur interne : 001B85 ( Pmc/Checkpoint ); précédent : 001B84; suivant : 001B86Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator
Auteurs : Venu Chalasani ; Derek W. Cool ; Shi Sherebrin ; Aaron Fenster ; Joseph Chin ; Jonathan I. IzawaSource :
- Canadian Urological Association Journal [ 1911-6470 ] ; 2011.
Abstract
We present the design, reliability, face, content and construct validity testing of a virtual reality simulator for transrectal ultrasound (TRUS), which allows doctors-in-training to perform multiple different biopsy schemes.
This biopsy system design uses a regular “end-firing” TRUS probe. Movements of the probe are tracked with a micro-magnetic sensor to dynamically slice through a phantom patient’s 3D prostate volume to provide real-time continuous TRUS views. 3D TRUS scans during prostate biopsy clinics were recorded. Intrinsic reliability was assessed by comparing the left side of the prostate to the right side of the prostate for each biopsy. A content and face validity questionnaire was administered to 26 doctors to assess the simulator. Construct validity was assessed by comparing notes from experts and novices with regards to the time taken and the accuracy of each biopsy.
Imaging data from 50 patients were integrated into the simulator. The completed VR TRUS simulator uses real patient images, and is able to provide simulation for 50 cases, with a haptic interface that uses a standard TRUS probe and biopsy needle. Intrinsic reliability was successfully demonstrated by comparing results from the left and right sides of the prostate. Face and content validity respondents noted the realism of the simulator, and its appropriateness as a teaching model. The simulator was able to distinguish between experts and novices during construct validity testing.
A virtual reality TRUS simulator has successfully been created. It has promising face, content and construct validity results.
Url:
DOI: 10.5489/cuaj.09159
PubMed: 21470507
PubMed Central: 3036750
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator</title><author><name sortKey="Chalasani, Venu" sort="Chalasani, Venu" uniqKey="Chalasani V" first="Venu" last="Chalasani">Venu Chalasani</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Cool, Derek W" sort="Cool, Derek W" uniqKey="Cool D" first="Derek W." last="Cool">Derek W. Cool</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Sherebrin, Shi" sort="Sherebrin, Shi" uniqKey="Sherebrin S" first="Shi" last="Sherebrin">Shi Sherebrin</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Fenster, Aaron" sort="Fenster, Aaron" uniqKey="Fenster A" first="Aaron" last="Fenster">Aaron Fenster</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Chin, Joseph" sort="Chin, Joseph" uniqKey="Chin J" first="Joseph" last="Chin">Joseph Chin</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Izawa, Jonathan I" sort="Izawa, Jonathan I" uniqKey="Izawa J" first="Jonathan I" last="Izawa">Jonathan I. Izawa</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21470507</idno><idno type="pmc">3036750</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036750</idno><idno type="RBID">PMC:3036750</idno><idno type="doi">10.5489/cuaj.09159</idno><date when="2011">2011</date><idno type="wicri:Area/Pmc/Corpus">001329</idno><idno type="wicri:Area/Pmc/Curation">001329</idno><idno type="wicri:Area/Pmc/Checkpoint">001B85</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator</title><author><name sortKey="Chalasani, Venu" sort="Chalasani, Venu" uniqKey="Chalasani V" first="Venu" last="Chalasani">Venu Chalasani</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Cool, Derek W" sort="Cool, Derek W" uniqKey="Cool D" first="Derek W." last="Cool">Derek W. Cool</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Sherebrin, Shi" sort="Sherebrin, Shi" uniqKey="Sherebrin S" first="Shi" last="Sherebrin">Shi Sherebrin</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Fenster, Aaron" sort="Fenster, Aaron" uniqKey="Fenster A" first="Aaron" last="Fenster">Aaron Fenster</name><affiliation><nlm:aff id="af2-cuaj-1-19"> Robarts Research Institute, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Chin, Joseph" sort="Chin, Joseph" uniqKey="Chin J" first="Joseph" last="Chin">Joseph Chin</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author><author><name sortKey="Izawa, Jonathan I" sort="Izawa, Jonathan I" uniqKey="Izawa J" first="Jonathan I" last="Izawa">Jonathan I. Izawa</name><affiliation><nlm:aff id="af1-cuaj-1-19"> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</nlm:aff><wicri:noCountry code="subfield">ON</wicri:noCountry></affiliation></author></analytic><series><title level="j">Canadian Urological Association Journal</title><idno type="ISSN">1911-6470</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objective</title><p>We present the design, reliability, face, content and construct validity testing of a virtual reality simulator for transrectal ultrasound (TRUS), which allows doctors-in-training to perform multiple different biopsy schemes.</p></sec><sec><title>Methods</title><p>This biopsy system design uses a regular “end-firing” TRUS probe. Movements of the probe are tracked with a micro-magnetic sensor to dynamically slice through a phantom patient’s 3D prostate volume to provide real-time continuous TRUS views. 3D TRUS scans during prostate biopsy clinics were recorded. Intrinsic reliability was assessed by comparing the left side of the prostate to the right side of the prostate for each biopsy. A content and face validity questionnaire was administered to 26 doctors to assess the simulator. Construct validity was assessed by comparing notes from experts and novices with regards to the time taken and the accuracy of each biopsy.</p></sec><sec><title>Results</title><p>Imaging data from 50 patients were integrated into the simulator. The completed VR TRUS simulator uses real patient images, and is able to provide simulation for 50 cases, with a haptic interface that uses a standard TRUS probe and biopsy needle. Intrinsic reliability was successfully demonstrated by comparing results from the left and right sides of the prostate. Face and content validity respondents noted the realism of the simulator, and its appropriateness as a teaching model. The simulator was able to distinguish between experts and novices during construct validity testing.</p></sec><sec><title>Conclusions</title><p>A virtual reality TRUS simulator has successfully been created. It has promising face, content and construct validity results.</p></sec></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Can Urol Assoc J</journal-id><journal-id journal-id-type="publisher-id">CUAJ</journal-id><journal-title-group><journal-title>Canadian Urological Association Journal</journal-title></journal-title-group><issn pub-type="ppub">1911-6470</issn><publisher><publisher-name>Canadian Medical Association</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">21470507</article-id><article-id pub-id-type="pmc">3036750</article-id><article-id pub-id-type="doi">10.5489/cuaj.09159</article-id><article-id pub-id-type="publisher-id">cuaj-1-19</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Research</subject></subj-group></article-categories><title-group><article-title>Development and validation of a virtual reality transrectal ultrasound guided prostatic biopsy simulator</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Chalasani</surname><given-names>Venu</given-names></name><degrees>MD</degrees><xref ref-type="aff" rid="af1-cuaj-1-19">*</xref></contrib><contrib contrib-type="author"><name><surname>Cool</surname><given-names>Derek W.</given-names></name><degrees>MD</degrees><xref ref-type="aff" rid="af2-cuaj-1-19">†</xref></contrib><contrib contrib-type="author"><name><surname>Sherebrin</surname><given-names>Shi</given-names></name><degrees>MD</degrees><xref ref-type="aff" rid="af2-cuaj-1-19">†</xref></contrib><contrib contrib-type="author"><name><surname>Fenster</surname><given-names>Aaron</given-names></name><degrees>MD</degrees><xref ref-type="aff" rid="af2-cuaj-1-19">†</xref></contrib><contrib contrib-type="author"><name><surname>Chin</surname><given-names>Joseph</given-names></name><degrees>MD, FRCSC</degrees><xref ref-type="aff" rid="af1-cuaj-1-19">*</xref></contrib><contrib contrib-type="author"><name><surname>Izawa</surname><given-names>Jonathan I</given-names></name><degrees>MD, FRCSC</degrees><xref ref-type="aff" rid="af1-cuaj-1-19">*</xref><xref ref-type="corresp" rid="c1-cuaj-1-19"></xref></contrib></contrib-group><aff id="af1-cuaj-1-19"><label>*</label> Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON</aff><aff id="af2-cuaj-1-19"><label>†</label> Robarts Research Institute, University of Western Ontario, London, ON</aff><author-notes><corresp id="c1-cuaj-1-19">Correspondence: Dr. Jonathan I. Izawa, Associate Professor, Departments of Surgery & Oncology, Divisions of Urology & Surgical Oncology, London Health Sciences Centre-Victoria Hospital, 800 Commissioners Road East, Suite C3-120, London, ON N6A 4G5; fax: 519 685 8450; jonathan. <email>izawa@lhsc.on.ca</email></corresp></author-notes><pub-date pub-type="ppub"><month>2</month><year>2011</year></pub-date><volume>5</volume><issue>1</issue><fpage>19</fpage><lpage>26</lpage><permissions><copyright-statement>Copyright: © 2011 Canadian Urological Association or its licensors</copyright-statement></permissions><abstract><sec><title>Objective</title><p>We present the design, reliability, face, content and construct validity testing of a virtual reality simulator for transrectal ultrasound (TRUS), which allows doctors-in-training to perform multiple different biopsy schemes.</p></sec><sec><title>Methods</title><p>This biopsy system design uses a regular “end-firing” TRUS probe. Movements of the probe are tracked with a micro-magnetic sensor to dynamically slice through a phantom patient’s 3D prostate volume to provide real-time continuous TRUS views. 3D TRUS scans during prostate biopsy clinics were recorded. Intrinsic reliability was assessed by comparing the left side of the prostate to the right side of the prostate for each biopsy. A content and face validity questionnaire was administered to 26 doctors to assess the simulator. Construct validity was assessed by comparing notes from experts and novices with regards to the time taken and the accuracy of each biopsy.</p></sec><sec><title>Results</title><p>Imaging data from 50 patients were integrated into the simulator. The completed VR TRUS simulator uses real patient images, and is able to provide simulation for 50 cases, with a haptic interface that uses a standard TRUS probe and biopsy needle. Intrinsic reliability was successfully demonstrated by comparing results from the left and right sides of the prostate. Face and content validity respondents noted the realism of the simulator, and its appropriateness as a teaching model. The simulator was able to distinguish between experts and novices during construct validity testing.</p></sec><sec><title>Conclusions</title><p>A virtual reality TRUS simulator has successfully been created. It has promising face, content and construct validity results.</p></sec></abstract><trans-abstract xml:lang="fr"><sec><title>Objectif</title><p>Nous présentons le plan, la fiabilité, la validité apparente, de contenu et conceptuelle d’un simulateur virtuel d’échographie transrectale permettant aux médecins en cours de formation d’exécuter de nombreux schémas différents de biopsie.</p></sec><sec><title>Méthodologie</title><p>Ce système de biopsie est muni d’une sonde à échographie transrectale habituelle à « émission verticale ». Les mouvements de la sonde sont suivis grâce à un capteur micromag-nétique permettant pratiquer des incisions de façon dynamique dans un volume prostatique virtuel en 3 dimensions et de produire des images continues en temps réel. Les images en 3 dimensions obtenues pendant des stages de biopsie prostatique ont été enreg-istrées. La fiabilité intrinsèque a été évaluée en comparant le côté gauche et le côté droit de la prostate pour chaque biopsie. On a évalué le simulateur grâce à un questionnaire portant sur le contenu et la validité apparente rempli par 26 médecins. La valid-ité conceptuelle a été évaluée en comparant les notes provenant d’experts et de débutants quant au temps requis pour effectuer les biopsies et à la précision de chaque biopsie.</p></sec><sec><title>Résultats</title><p>Les images provenant de 50 patients ont été intégrées au simulateur. Le simulateur d’échographie transrectale virtuelle utilise de vraies images de patients et peut fournir une simulation pour 50 cas, avec une interface haptique fondée sur une sonde d’échographie transrectale et une aiguille de biopsie standard. La fiabilité intrinsèque a été démontrée avec succès en comparant les résultats des côtés gauche et droit de la prostate. Les répondants des questionnaires de validité apparente et de contenu ont noté le réalisme du simulateur, et son adéquation en tant que modèle d’apprentissage. Le simulateur a été en mesure de faire la distinction entre les experts et les débutants pendant l’analyse de la validité conceptuelle.</p></sec><sec><title>Conclusions</title><p>Un simulateur virtuel d’échographie transrectale effi-cace a été créé. Il a généré des résultats prometteurs lors de tests de la validité apparente, de contenu et conceptuelle.</p></sec></trans-abstract></article-meta></front></pmc><affiliations><list></list><tree><noCountry><name sortKey="Chalasani, Venu" sort="Chalasani, Venu" uniqKey="Chalasani V" first="Venu" last="Chalasani">Venu Chalasani</name><name sortKey="Chin, Joseph" sort="Chin, Joseph" uniqKey="Chin J" first="Joseph" last="Chin">Joseph Chin</name><name sortKey="Cool, Derek W" sort="Cool, Derek W" uniqKey="Cool D" first="Derek W." last="Cool">Derek W. Cool</name><name sortKey="Fenster, Aaron" sort="Fenster, Aaron" uniqKey="Fenster A" first="Aaron" last="Fenster">Aaron Fenster</name><name sortKey="Izawa, Jonathan I" sort="Izawa, Jonathan I" uniqKey="Izawa J" first="Jonathan I" last="Izawa">Jonathan I. Izawa</name><name sortKey="Sherebrin, Shi" sort="Sherebrin, Shi" uniqKey="Sherebrin S" first="Shi" last="Sherebrin">Shi Sherebrin</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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