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Article: Comparison of inter- and intraobserver agreement between three types of fetal volume measurement technique (XI VOCAL™, VOCAL™ and multiplanar)

TitleComparison of inter- and intraobserver agreement between three types of fetal volume measurement technique (XI VOCAL™, VOCAL™ and multiplanar)
Authors
Issue Date2009
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0960-7692/
Citation
Ultrasound In Obstetrics And Gynecology, 2009, v. 33 n. 3, p. 287-294 How to Cite?
AbstractObjectives To compare the new XI VOCAL™ (eXtended Imaging Virtual Organ Computer-aided Analysis) for three-dimensional (3D) ultrasound measurement of fetal volume with the conventional multiplanar technique and a rotational method using VOCAL™. Methods We acquired 3D volume datasets from 30 fetuses at 11-14 weeks of gestation using a commercially available ultrasound system. Fetal volume was calculated using XI VOCAL (with 5, 10, 15 and 20 slices), multiplanar (1-mm interval) and VOCAL (with 12°,18° and 30° rotation) techniques. The level of agreement for interobserver and intraobserver variability was determined and evaluated for all methods and reliability was assessed. Results Fetal volume measurements obtained using XI VOCAL (10 slices) showed good correlation with those obtained using VOCAL (18°)(r = 0.940, P = 0.076; intraclass correlation coefficient (ICC), 0.962 (95% CI, 0.920-0.982), P = 0.182), and XI VOCAL (15 slices) showed good correlation with VOCAL (12°)(r = 0.961, P = 0.092; ICC, 0.979 (95% CI, 0.957-0.990), P = 0.190). The mean difference between paired measurements by the XI VOCAL (10 slices) and VOCAL (18°) methods was 1.00 mL, while that by the XI VOCAL (15 slices) and VOCAL (12°) methods was 0.90 mL. 95% limits of agreement were -2.80 to 4.80 between XI VOCAL (10 slices) and VOCAL (18°)and-1.90 to 3.70 between XI VOCAL (15 slices) and VOCAL (12°). There was a small difference in the time required to complete the fetal volume measurement between XI VOCAL and VOCAL when a similar number of slices or rotational steps was used (P < 0.05), XI VOCAL taking less time. Conclusion XI VOCAL (with 10, 15 and 20 slices) can be used interchangeably with the multiplanar technique (1-mm interval) for the measurement of fetal volume. XI VOCAL (10 slices) and VOCAL (18°) can be used interchangeably, as can XI VOCAL (15 slices) and VOCAL (12°), for the measurement of fetal volume. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/180694
ISSN
2015 Impact Factor: 4.197
2015 SCImago Journal Rankings: 1.766
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheong, KBen_US
dc.contributor.authorLeung, KYen_US
dc.contributor.authorChan, HYen_US
dc.contributor.authorLee, YPen_US
dc.contributor.authorYang, Fen_US
dc.contributor.authorTang, MHYen_US
dc.date.accessioned2013-01-28T01:41:10Z-
dc.date.available2013-01-28T01:41:10Z-
dc.date.issued2009en_US
dc.identifier.citationUltrasound In Obstetrics And Gynecology, 2009, v. 33 n. 3, p. 287-294en_US
dc.identifier.issn0960-7692en_US
dc.identifier.urihttp://hdl.handle.net/10722/180694-
dc.description.abstractObjectives To compare the new XI VOCAL™ (eXtended Imaging Virtual Organ Computer-aided Analysis) for three-dimensional (3D) ultrasound measurement of fetal volume with the conventional multiplanar technique and a rotational method using VOCAL™. Methods We acquired 3D volume datasets from 30 fetuses at 11-14 weeks of gestation using a commercially available ultrasound system. Fetal volume was calculated using XI VOCAL (with 5, 10, 15 and 20 slices), multiplanar (1-mm interval) and VOCAL (with 12°,18° and 30° rotation) techniques. The level of agreement for interobserver and intraobserver variability was determined and evaluated for all methods and reliability was assessed. Results Fetal volume measurements obtained using XI VOCAL (10 slices) showed good correlation with those obtained using VOCAL (18°)(r = 0.940, P = 0.076; intraclass correlation coefficient (ICC), 0.962 (95% CI, 0.920-0.982), P = 0.182), and XI VOCAL (15 slices) showed good correlation with VOCAL (12°)(r = 0.961, P = 0.092; ICC, 0.979 (95% CI, 0.957-0.990), P = 0.190). The mean difference between paired measurements by the XI VOCAL (10 slices) and VOCAL (18°) methods was 1.00 mL, while that by the XI VOCAL (15 slices) and VOCAL (12°) methods was 0.90 mL. 95% limits of agreement were -2.80 to 4.80 between XI VOCAL (10 slices) and VOCAL (18°)and-1.90 to 3.70 between XI VOCAL (15 slices) and VOCAL (12°). There was a small difference in the time required to complete the fetal volume measurement between XI VOCAL and VOCAL when a similar number of slices or rotational steps was used (P < 0.05), XI VOCAL taking less time. Conclusion XI VOCAL (with 10, 15 and 20 slices) can be used interchangeably with the multiplanar technique (1-mm interval) for the measurement of fetal volume. XI VOCAL (10 slices) and VOCAL (18°) can be used interchangeably, as can XI VOCAL (15 slices) and VOCAL (12°), for the measurement of fetal volume. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0960-7692/en_US
dc.relation.ispartofUltrasound in Obstetrics and Gynecologyen_US
dc.subject.meshFemaleen_US
dc.subject.meshFetal Development - Physiologyen_US
dc.subject.meshFetal Diseases - Ultrasonographyen_US
dc.subject.meshGestational Ageen_US
dc.subject.meshHumansen_US
dc.subject.meshImage Processing, Computer-Assisted - Instrumentation - Methodsen_US
dc.subject.meshImaging, Three-Dimensional - Instrumentation - Methodsen_US
dc.subject.meshObserver Variationen_US
dc.subject.meshPregnancyen_US
dc.subject.meshPrognosisen_US
dc.subject.meshUltrasonography, Prenatal - Instrumentation - Methodsen_US
dc.titleComparison of inter- and intraobserver agreement between three types of fetal volume measurement technique (XI VOCAL™, VOCAL™ and multiplanar)en_US
dc.typeArticleen_US
dc.identifier.emailTang, MHY: mhytang@hkucc.hku.hken_US
dc.identifier.authorityTang, MHY=rp01701en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/uog.6255en_US
dc.identifier.pmid19248036-
dc.identifier.scopuseid_2-s2.0-61849156921en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-61849156921&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume33en_US
dc.identifier.issue3en_US
dc.identifier.spage287en_US
dc.identifier.epage294en_US
dc.identifier.isiWOS:000266505500006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridCheong, KB=26321364700en_US
dc.identifier.scopusauthoridLeung, KY=8247106900en_US
dc.identifier.scopusauthoridChan, HY=7403402562en_US
dc.identifier.scopusauthoridLee, YP=15033545100en_US
dc.identifier.scopusauthoridYang, F=35363141900en_US
dc.identifier.scopusauthoridTang, MHY=35362943900en_US

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