Uni- and bidirectional wide angle CT colonography: effect on missed areas, surface visualization, viewing time and polyp conspicuity.
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| Title: | Uni- and bidirectional wide angle CT colonography: effect on missed areas, surface visualization, viewing time and polyp conspicuity. |
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| Authors: | East JE (AUTHOR), Saunders BP (AUTHOR), Boone D (AUTHOR), Burling D (AUTHOR), Halligan S (AUTHOR), Taylor SA (AUTHOR), East, James E1 (AUTHOR), Saunders, Brian P (AUTHOR), Boone, Darren (AUTHOR), Burling, David (AUTHOR), Halligan, Steve (AUTHOR), Taylor, Stuart A (AUTHOR) |
| Source: | European Radiology. Sep2008, Vol. 18 Issue 9, p1910-1917. 8p. |
| Abstract: | The effect of field of view on mucosal visualisation and reader efficiency during three-dimensional endoluminal CT colonography (CTC) was investigated. Twenty CTC datasets were reviewed at standard 90-degree and "wide" 140-degree viewing angles using customised viewing software (V3D colon; Viatronix), which listed number and size of missed mucosal areas ("missed regions tool") and percentage mucosal visualisation. We compared: (1) unidirectional and bidirectional flythrough using 140- versus 90-degree viewing angles; (2) reader analysis time comparing unidirectional 140-degree flythrough versus bidirectional 90-degree flythrough; (3) paired image snapshots of 12 polyps taken at each field of view were reviewed to assess conspicuity. All patients underwent conventional colonoscopy. Bidirectional 140-degree review reduced the numbers of missed areas by between eight- and 40-fold depending on size category, including those >1,000 mm(2), compared with standard 90-degree bidirectional flythrough (P < 0.001). Combined prone-supine unidirectional 140-degree flythrough and missed area review was 3.8 min faster than 90-degree bidirectional review (9.3 versus 5.5 min, P < 0.0001) for the same surface visualisation. When viewed as pairs, polyps were rated more conspicuous with a 90-degree field of view, P = 0.03. Wide-angle (140-degree) CTC can reduce both numbers of missed areas and review times. However, this may be at the expense of polyp conspicuity. [ABSTRACT FROM AUTHOR] |
| Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 105552005 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Uni- and bidirectional wide angle CT colonography: effect on missed areas, surface visualization, viewing time and polyp conspicuity. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22East+JE%22">East JE</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saunders+BP%22">Saunders BP</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Boone+D%22">Boone D</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burling+D%22">Burling D</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Halligan+S%22">Halligan S</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Taylor+SA%22">Taylor SA</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22East%2C+James+E%22">East, James E</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saunders%2C+Brian+P%22">Saunders, Brian P</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Boone%2C+Darren%22">Boone, Darren</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burling%2C+David%22">Burling, David</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Halligan%2C+Steve%22">Halligan, Steve</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Taylor%2C+Stuart+A%22">Taylor, Stuart A</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Radiology%22">European Radiology</searchLink>. Sep2008, Vol. 18 Issue 9, p1910-1917. 8p. – Name: Abstract Label: Abstract Group: Ab Data: The effect of field of view on mucosal visualisation and reader efficiency during three-dimensional endoluminal CT colonography (CTC) was investigated. Twenty CTC datasets were reviewed at standard 90-degree and "wide" 140-degree viewing angles using customised viewing software (V3D colon; Viatronix), which listed number and size of missed mucosal areas ("missed regions tool") and percentage mucosal visualisation. We compared: (1) unidirectional and bidirectional flythrough using 140- versus 90-degree viewing angles; (2) reader analysis time comparing unidirectional 140-degree flythrough versus bidirectional 90-degree flythrough; (3) paired image snapshots of 12 polyps taken at each field of view were reviewed to assess conspicuity. All patients underwent conventional colonoscopy. Bidirectional 140-degree review reduced the numbers of missed areas by between eight- and 40-fold depending on size category, including those >1,000 mm(2), compared with standard 90-degree bidirectional flythrough (P < 0.001). Combined prone-supine unidirectional 140-degree flythrough and missed area review was 3.8 min faster than 90-degree bidirectional review (9.3 versus 5.5 min, P < 0.0001) for the same surface visualisation. When viewed as pairs, polyps were rated more conspicuous with a 90-degree field of view, P = 0.03. Wide-angle (140-degree) CTC can reduce both numbers of missed areas and review times. However, this may be at the expense of polyp conspicuity. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00330-008-0969-y Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 1910 Titles: – TitleFull: Uni- and bidirectional wide angle CT colonography: effect on missed areas, surface visualization, viewing time and polyp conspicuity. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: East JE – PersonEntity: Name: NameFull: Saunders BP – PersonEntity: Name: NameFull: Boone D – PersonEntity: Name: NameFull: Burling D – PersonEntity: Name: NameFull: Halligan S – PersonEntity: Name: NameFull: Taylor SA – PersonEntity: Name: NameFull: East, James E – PersonEntity: Name: NameFull: Saunders, Brian P – PersonEntity: Name: NameFull: Boone, Darren – PersonEntity: Name: NameFull: Burling, David – PersonEntity: Name: NameFull: Halligan, Steve – PersonEntity: Name: NameFull: Taylor, Stuart A IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 09387994 Numbering: – Type: volume Value: 18 – Type: issue Value: 9 Titles: – TitleFull: European Radiology Type: main |
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