Polyp measurement based on CT colonography and colonoscopy: variability and systematic differences
| Autor: | Shandra Bipat, Paul Fockens, Frans M. Vos, Evelien Dekker, Jaap Stoker, Roel Truyen, Jasper Florie, Johannes B. Reitsma, E.M.H. Mathus-Vliegen, Ayso H. de Vries, Roel van der Kraan, Marjolein H. Liedenbaum, Aeilko H. Zwinderman |
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| Přispěvatelé: | Radiology and Nuclear Medicine, ACS - Amsterdam Cardiovascular Sciences, AGEM - Amsterdam Gastroenterology Endocrinology Metabolism, CCA -Cancer Center Amsterdam, Gastroenterology and Hepatology, APH - Amsterdam Public Health, Epidemiology and Data Science, ANS - Amsterdam Neuroscience, Faculteit der Geneeskunde |
| Jazyk: | angličtina |
| Předmět: |
Male
Gastrointestinal medicine.medical_specialty genetic structures Colon Colonic Polyps Colonoscopy Sensitivity and Specificity CT colonography otorhinolaryngologic diseases medicine Humans Radiology Nuclear Medicine and imaging 2D Aged Cancer Neuroradiology Measurement medicine.diagnostic_test business.industry Reproducibility of Results Interventional radiology General Medicine Middle Aged medicine.disease eye diseases digestive system diseases Optical colonoscopy Radiology Nuclear Medicine and imaging Female sense organs Radiology business Colonography Computed Tomographic 3D |
| Zdroj: | European radiology, 20(6), 1404-1413. Springer Verlag European Radiology, 20(6), 1404-1413. Springer Verlag European Radiology |
| ISSN: | 0938-7994 |
| DOI: | 10.1007/s00330-009-1683-0 |
| Popis: | Objective To assess the variability and systematic differences in polyp measurements on optical colonoscopy and CT colonography. Materials Gastroenterologists measured 51 polyps by visual estimation, forceps comparison and linear probe. CT colonography observers randomly assessed polyp size two-dimensionally (abdominal and intermediate window) and three-dimensionally (manually and semi-automatically). Linear mixed models were used to assess the variability and systematic differences between CT colonography and optical colonoscopy techniques. Results The variability of forceps and linear probe measurements was comparable and both showed less variability than measurement by visual assessment. Measurements by linear probe were 0.7 mm smaller than measurements by visual assessment or by forceps. The variability of all CT colonography techniques was lower than for measurements by forceps or visual assessment and sometimes lower (only 2D intermediate window and manual 3D) compared with measurements by linear probe. All CT colonography measurements judged polyps to be larger than optical colonoscopy, with differences ranging from 0.7 to 2.3 mm. Conclusion A linear probe does not reduce the measurement variability of endoscopists compared with the forceps. Measurement differences between observers on CT colonography were usually smaller than at optical colonoscopy. Polyps appeared larger when using various CT colonography techniques than when measured during optical colonoscopy. |
| Databáze: | OpenAIRE |
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