Research Topics
| Jasper FlorieSummaryAffiliation: Academic Medical Center Country: The Netherlands Publications
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Detail Information
Publications
MR colonography with limited bowel preparation compared with optical colonoscopy in patients at increased risk for colorectal cancerJasper Florie
Department of Radiology, Academic Medical Center, PO Box 22660, 1100 DD Amsterdam, The Netherlands
Radiology 243:122-31. 2007....
Feasibility study of computed tomography colonography using limited bowel preparation at normal and low-dose levels studyJasper Florie
Department of Radiology, Academic Medical Center, G1 230, P O Box 22660, 1100 DD, Amsterdam, The Netherlands
Eur Radiol 17:3112-22. 2007..001). CT colonography without cleansing is preferred to colonoscopy and shows sufficient image quality and moderate sensitivity, without impaired diagnostic value at dose-levels as low as 0.7 mSv...- MR colonography with limited bowel preparation: patient acceptance compared with that of full-preparation colonoscopyJasper Florie
Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 245:150-9. 2007..To prospectively evaluate participants' experience and preference of magnetic resonance (MR) colonography with limited bowel preparation compared with full-preparation colonoscopy in participants at increased risk for colorectal cancer... - Magnetic resonance imaging compared with ileocolonoscopy in evaluating disease severity in Crohn's diseaseJasper Florie
Department of Radiology, Academic Medical Center, Amsterdam, The Netherlands
Clin Gastroenterol Hepatol 3:1221-8. 2005..The purpose of this study was to assess the value of MRI in measuring disease activity in CD patients in comparison with ileocolonoscopy... - Colonography by computed tomographyJasper Florie
Department of Radiology, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Eur J Gastroenterol Hepatol 17:809-13. 2005..This article describes possible causes of these remarkable differences as well as advances in computed tomographic colonography... - Magnetic resonance colonography with limited bowel preparation: a comparison of three strategiesJasper Florie
Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
J Magn Reson Imaging 25:766-74. 2007..To prospectively compare three strategies of magnetic resonance colonography (MRC) with fecal tagging... - A comparison of primary two- and three-dimensional methods to review CT colonographyRogier E van Gelder
Department of Radiology, Academic Medical Center of the University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
Eur Radiol 17:1181-92. 2007..3/17; p-values > or = 0.45), number of false positives: 33.3 and 15.6, and perceptive errors : 4 and 6 (p = 0.53). No significant differences were found in the detection of large and medium-sized polyps between primary 3D and 2D review... - CT colonography and colonoscopy: assessment of patient preference in a 5-week follow-up studyRogier E van Gelder
Departments of Radiology, Social Medicine, and Gastroenterology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 233:328-37. 2004..70), while the role of experiences waned. CONCLUSION: Patients preferred CT colonography to colonoscopy; however, this preference decreased in time, while outcome considerations gradually replaced temporary experiences of inconvenience... - Computed tomographic colonography compared with colonoscopy in patients at increased risk for colorectal cancerRogier E van Gelder
Department of Radiology, Academic Medical Center of the University of Amsterdam, Amsterdam, The Netherlands
Gastroenterology 127:41-8. 2004..We prospectively investigated the ability of CT colonography to identify individuals with large (>or=10 mm) colorectal polyps in consecutive patients at increased risk for colorectal cancer... - CT colonography: feasibility of substantial dose reduction--comparison of medium to very low doses in identical patientsRogier E van Gelder
Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 232:611-20. 2004..Initial observations indicate that it is feasible to reduce the radiation dose required for CT colonography. Further studies are needed, however, to investigate the clinical value of very low-dose CT colonography... 
Does a computer-aided detection algorithm in a second read paradigm enhance the performance of experienced computed tomography colonography readers in a population of increased risk?Ayso H de Vries
Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
Eur Radiol 19:941-50. 2009..Thus, although CTC with CAD detected a few more patients than CTC without CAD, it had no statistically significant positive influence on CTC performance...- Polyp measurement based on CT colonography and colonoscopy: variability and systematic differencesAyso H de Vries
Department of Radiology, Academic Medical Centre, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Eur Radiol 20:1404-13. 2010..To assess the variability and systematic differences in polyp measurements on optical colonoscopy and CT colonography... - Performance of radiographers in the evaluation of CT colonographic imagesSebastiaan Jensch
Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, Noord Holland, The Netherlands
AJR Am J Roentgenol 188:W249-55. 2007..The purpose of this study was to compare the accuracy of radiographers with that of radiologists in the interpretation of CT colonographic images... - Feasibility of evaluating Crohn's disease activity at 3.0 TeslaKarin van Gemert-Horsthuis
Department of Radiology, Academic Medical Center, Amsterdam, The Netherlands
J Magn Reson Imaging 24:340-8. 2006..To determine whether abdominal 3.0T MRI can be used for evaluation of Crohn's disease (CD) compared with ileocolonoscopy (CS), and to determine patient preference for MRI as opposed to CS... - CT colonography polyp matching: differences between experienced readersMarjolein H Liedenbaum
Department of Radiology, Academic Medical Center, Meibergdreef 9, 1105, AZ, Amsterdam, Netherlands
Eur Radiol 19:1723-30. 2009..Experienced CTC readers agree to a considerable extent when matching polyps between CTC and subsequent OC, but non-negligible disagreement exists... - Influence of tagged fecal material on detectability of colorectal polyps at CT: phantom studyAyso H de Vries
Department of Radiology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
AJR Am J Roentgenol 191:1101. 2008..The purpose of this study was to determine the influence of tagged material on the minimal radiation dose needed to detect colorectal polyps at CT... - Incidental extracolonic findings on bright lumen MR colonography in a population at increased risk for colorectal carcinomaErlangga Yusuf
Department of Radiology, Academic Medical Center, Amsterdam, Postbus 22660, 1100 DD Amsterdam, The Netherlands
Eur J Radiol 78:135-41. 2011..In this study, we sought to determine the prevalence and the spectrum of extracolonic findings in patients with an increased risk colorectal cancer that underwent bright lumen MRC... - Image quality and patient acceptance of four regimens with different amounts of mild laxatives for CT colonographySebastiaan Jensch
Department of Radiology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
AJR Am J Roentgenol 191:158-67. 2008..The purpose of our study was to prospectively evaluate image quality and patient acceptance of CT colonography (CTC) with fecal tagging using different levels of catharsis... - Statistical models for quantifying diagnostic accuracy with multiple lesions per patientAeilko H Zwinderman
Department of Clinical Epidemiology and Biostatistics, J2 203, Amsterdam Medical Center, University of Amsterdam, PO Box 22700, 1100 DE Amsterdam, The Netherlands
Biostatistics 9:513-22. 2008..We applied our tools to simulated data and data of a study assessing diagnostic accuracy of virtual colonography with computed tomography in 200 patients suspected of having one or more polyps... - Dynamic contrast-enhanced MRI of the bowel wall for assessment of disease activity in Crohn's diseaseJasper Florie
Department of Radiology, Academic Medical Center, G1-211, PO Box 22700, Amsterdam 1100 DE, The Netherlands
AJR Am J Roentgenol 186:1384-92. 2006..41, p = 0.007). CONCLUSION: These data suggest that the enhancement ratio of bowel wall after IV administration of gadodiamide and bowel wall thickness are weak to moderate indicators of the severity of Crohn's disease... - Three-dimensional display modes for CT colonography: conventional 3D virtual colonoscopy versus unfolded cube projectionFrans M Vos
Department of Radiology, Academic Medical Center Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
Radiology 228:878-85. 2003..605 for conventional 3D display and kappa = 0.692 for unfolded cube display. Consequently, the latter method enhances the 3D endoluminal display with improved time efficiency and higher surface visibility... - Polyp measurement and size categorisation by CT colonography: effect of observer experience in a multi-centre settingDavid Burling
Intestinal Imaging Centre, St. Marks Hospital, London, UK
Eur Radiol 16:1737-44. 2006..e. large polyps misclassified as medium). Caution should be exercised for polyps whose colonographic diameter is below but close to the 1-cm boundary threshold in order to avoid potential miscategorisation of advanced adenomas... - CT colonography interpretation times: effect of reader experience, fatigue, and scan findings in a multi-centre settingDavid Burling
Intestinal Imaging Centre, St. Marks Hospital, London, UK
Eur Radiol 16:1745-9. 2006..Technicians who report more slowly are more accurate. All groups reported faster as the study period progressed...