American Journal of Roentgenology, Vol 172, 595-599, Copyright © 1999 by American Roentgen Ray Society

ARTICLES

CT colonography: value of scanning in both the supine and prone positions

SC Chen, DS Lu, JR Hecht and BM Kadell
Department of Radiological Sciences, UCLA Medical Center, Los Angeles, CA 90095-1721, USA.

OBJECTIVE: The purpose of this study was to evaluate the effectiveness of CT colonography when patients were imaged in both the supine and prone positions. We evaluated whether imaging in two positions decreased the number of collapsed colonic segments and increased sensitivity for polyp detection. MATERIALS AND METHODS: Twenty-three patients underwent CT colonography in both the supine and prone positions. Colonic distention for each of the 46 scans was graded. Adequacy of distention for either position alone was compared with that of the combination of the two positions. Polyp data revealed by colonoscopy were reviewed, and the CT data were then retrospectively reviewed for polyp detection. RESULTS: When each scan was considered alone without benefit of the scan obtained in the opposite position, 27 (58.7%) of 46 scans showed inadequate distention. When scans obtained in both positions were considered together, 20 (87.0%) of 23 patients had adequate distention with the grading system used. However, this value increased to 23 (100%) of 23 patients when the reasons for inadequate distention in the three patients were considered. Of the 27 polyps detected with colonoscopy, 21 (77.8%) were also detected retrospectively with CT colonography. Colonoscopy showed 20 polyps that were 5 mm or larger; nineteen (95.0%) of these 20 polyps were also detected retrospectively with CT colonography, nine (47.4%) of which were seen in only one position. CONCLUSION: Use of both the supine and prone positions for patients undergoing CT colonography improves evaluation of the colon and increases sensitivity for polyp detection.
CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				R. L. Van Uitert, R. M. Summers, J. M. White, K. K. Deshpande, J. R. Choi, and P. J. Pickhardt Temporal and Multiinstitutional Quality Assessment of CT Colonography Am. J. Roentgenol., November 1, 2008; 191(5): 1503 - 1508. [Abstract] [Full Text] [PDF]

				J. Sosna, J. Bar-Ziv, E. Libson, M. Eligulashvili, and A. Blachar CT Colonography: Positioning Order and Intracolonic Pressure Am. J. Roentgenol., October 1, 2008; 191(4): W175 - W180. [Abstract] [Full Text] [PDF]

				S. Jensch, A. H. de Vries, D. Pot, J. Peringa, S. Bipat, J. Florie, R. E. van Gelder, and J. Stoker Image Quality and Patient Acceptance of Four Regimens with Different Amounts of Mild Laxatives for CT Colonography Am. J. Roentgenol., July 1, 2008; 191(1): 158 - 167. [Abstract] [Full Text] [PDF]

				K. K. Deshpande, R. M. Summers, R. L. Van Uitert, M. Franaszek, L. Brown, A. J. Dwyer, J. G. Fletcher, J. R. Choi, and P. J. Pickhardt Quality Assessment for CT Colonography: Validation of Automated Measurement of Colonic Distention and Residual Fluid Am. J. Roentgenol., December 1, 2007; 189(6): 1457 - 1463. [Abstract] [Full Text] [PDF]

				A. Huang, D. A. Roy, R. M. Summers, M. Franaszek, N. Petrick, J. R. Choi, and P. J. Pickhardt Teniae Coli-based Circumferential Localization System for CT Colonography: Feasibility Study Radiology, May 1, 2007; 243(2): 551 - 560. [Abstract] [Full Text] [PDF]

				T. Mang, A. Maier, C. Plank, C. Mueller-Mang, C. Herold, and W. Schima Pitfalls in Multi-Detector Row CT Colonography: A Systematic Approach RadioGraphics, March 1, 2007; 27(2): 431 - 454. [Abstract] [Full Text] [PDF]

				J. C. Chen and A. H. Dachman Cecal Mobility: A Potential Pitfall of CT Colonography. Am. J. Roentgenol., April 1, 2006; 186(4): 1086 - 1089. [Abstract] [Full Text] [PDF]

				S A Taylor, S Halligan, A Slater, D Burling, M Marshall, and C I Bartram Comparison of Radiologists' confidence in excluding significant colorectal neoplasia with multidetector-row CT colonography compared with double contrast barium enema. Br. J. Radiol., March 1, 2006; 79(939): 208 - 214. [Abstract] [Full Text] [PDF]

				T. Yasumoto, T. Murakami, H. Yamamoto, M. Hori, R. Iannaccone, T. Kim, H. Abe, M. Kuwabara, K. Yamasaki, N. Kikkawa, et al. Assessment of Two 3D MDCT Colonography Protocols for Observation of Colorectal Polyps Am. J. Roentgenol., January 1, 2006; 186(1): 85 - 89. [Abstract] [Full Text] [PDF]

				D. Burling, S. A. Taylor, S. Halligan, L. Gartner, M. Paliwalla, C. Peiris, L. Singh, P. Bassett, and C. Bartram Automated Insufflation of Carbon Dioxide for MDCT Colonography: Distension and Patient Experience Compared with Manual Insufflation Am. J. Roentgenol., January 1, 2006; 186(1): 96 - 103. [Abstract] [Full Text] [PDF]

				M. Macari and E. J. Bini CT Colonography: Where Have We Been and Where Are We Going? Radiology, December 1, 2005; 237(3): 819 - 833. [Abstract] [Full Text] [PDF]

				S. H. Kim, J. M. Lee, J. K. Han, J. Y. Lee, H. K. Yang, H.-J. Lee, K.-S. Shin, and B. I. Choi Effect of Adjusted Positioning on Gastric Distention and Fluid Distribution During CT Gastrography Am. J. Roentgenol., November 1, 2005; 185(5): 1180 - 1184. [Abstract] [Full Text] [PDF]

				P. Rogalla, A. Lembcke, J. C. Ruckert, E. Hein, M. Bollow, N. E. Rogalla, and B. Hamm Spasmolysis at CT Colonography: Butyl Scopolamine versus Glucagon Radiology, July 1, 2005; 236(1): 184 - 188. [Abstract] [Full Text] [PDF]

				S. Laks, M. Macari, and E. J. Bini Positional Change in Colon Polyps at CT Colonography Radiology, June 1, 2004; 231(3): 761 - 766. [Abstract] [Full Text] [PDF]

				H. Hoppe, C. Quattropani, A. Spreng, J. Mattich, P. Netzer, and H.-P. Dinkel Virtual Colon Dissection with CT Colonography Compared with Axial Interpretation and Conventional Colonoscopy: Preliminary Results Am. J. Roentgenol., May 1, 2004; 182(5): 1151 - 1158. [Abstract] [Full Text] [PDF]

				A. Filippone, R. Ambrosini, M. Fuschi, T. Marinelli, D. Genovesi, and L. Bonomo Preoperative T and N Staging of Colorectal Cancer: Accuracy of Contrast-enhanced Multi-Detector Row CT Colonography--Initial Experience Radiology, April 1, 2004; 231(1): 83 - 90. [Abstract] [Full Text] [PDF]

				R. Iannaccone, A. Laghi, C. Catalano, J. A. Brink, F. Mangiapane, S. Trenna, F. Piacentini, and R. Passariello Detection of Colorectal Lesions: Lower-Dose Multi-Detector Row Helical CT Colonography Compared with Conventional Colonoscopy Radiology, December 1, 2003; 229(3): 775 - 781. [Abstract] [Full Text] [PDF]

				J. Sosna, M. M. Morrin, J. B. Kruskal, P. T. Lavin, M. P. Rosen, and V. Raptopoulos CT Colonography of Colorectal Polyps: A Metaanalysis Am. J. Roentgenol., December 1, 2003; 181(6): 1593 - 1598. [Abstract] [Full Text] [PDF]

				S. A. Taylor, S. Halligan, V. Goh, S. Morley, P. Bassett, W. Atkin, and C. I. Bartram Optimizing Colonic Distention for Multi-Detector Row CT Colonography: Effect of Hyoscine Butylbromide and Rectal Balloon Catheter Radiology, October 1, 2003; 229(1): 99 - 108. [Abstract] [Full Text] [PDF]

				J. Wessling, R. Fischbach, N. Meier, T. Allkemper, J. Klusmeier, K. Ludwig, and W. Heindel CT Colonography: Protocol Optimization with Multi-Detector Row CT--Study in an Anthropomorphic Colon Phantom Radiology, September 1, 2003; 228(3): 753 - 759. [Abstract] [Full Text] [PDF]

				M. Macari, E. J. Bini, S. L. Jacobs, N. Lange, and Y. W. Lui Filling Defects at CT Colonography: Pseudo- and Diminutive Lesions (The Good), Polyps (The Bad), Flat Lesions, Masses, and Carcinomas (The Ugly) RadioGraphics, September 1, 2003; 23(5): 1073 - 1091. [Abstract] [Full Text] [PDF]

				J. Sosna, M. M. Morrin, J. B. Kruskal, R. J. Farrell, I. Nasser, and V. Raptopoulos Colorectal Neoplasms: Role of Intravenous Contrast-enhanced CT Colonography Radiology, July 1, 2003; 228(1): 152 - 156. [Abstract] [Full Text] [PDF]

				J. Yee, N. N. Kumar, R. K. Hung, G. A. Akerkar, P. R. G. Kumar, and S. D. Wall Comparison of Supine and Prone Scanning Separately and in Combination at CT Colonography Radiology, March 1, 2003; 226(3): 653 - 661. [Abstract] [Full Text] [PDF]

				R. M. Summers, A. K. Jerebko, M. Franaszek, J. D. Malley, and C. D. Johnson Colonic Polyps: Complementary Role of Computer-aided Detection in CT Colonography Radiology, November 1, 2002; 225(2): 391 - 399. [Abstract] [Full Text] [PDF]

				J. Yee CT Screening for Colorectal Cancer RadioGraphics, November 1, 2002; 22(6): 1525 - 1531. [Full Text] [PDF]

				N P Power, M D Pryor, A Martin, J Horrocks, A M McLean, and R H Reznek Optimization of scanning parameters for CT colonography Br. J. Radiol., May 31, 2002; 75(893): 401 - 408. [Abstract] [Full Text] [PDF]

				M. J. Gollub, M. S. Ginsberg, C. Cooper, and H. T. Thaler Quality of Virtual Colonoscopy in Patients Who Have Undergone Radiation Therapy or Surgery: How Successful Are We? Am. J. Roentgenol., May 1, 2002; 178(5): 1109 - 1116. [Abstract] [Full Text] [PDF]

				A S Chaoui, M A Blake, and T Glucker CT colonography and colorectal screening Gut, February 1, 2002; 50(2): 284 - 284. [Full Text] [PDF]

				P. W. Hung, D. S. Paik, S. Napel, J. Yee, R. B. Jeffrey Jr, A. Steinauer-Gebauer, J. Min, A. Jathavedam, and C. F. Beaulieu Quantification of Distention in CT Colonography: Development and Validation of Three Computer Algorithms Radiology, February 1, 2002; 222(2): 543 - 554. [Abstract] [Full Text] [PDF]

				J. T. Ferrucci Colon Cancer Screening with Virtual Colonoscopy: Promise, Polyps, Politics Am. J. Roentgenol., November 1, 2001; 177(5): 975 - 988. [Full Text] [PDF]

				A. K. Hara, C. D. Johnson, R. L. MacCarty, T. J. Welch, C. H. McCollough, and W. S. Harmsen CT Colonography: Single- versus Multi-Detector Row Imaging Radiology, May 1, 2001; 219(2): 461 - 465. [Abstract] [Full Text]

				E. G. McFarland, J. A. Brink, T. K. Pilgram, J. P. Heiken, D. M. Balfe, D. A. Hirselj, L. Weinstock, and B. Littenberg Spiral CT Colonography: Reader Agreement and Diagnostic Performance with Two- and Three-dimensional Image-Display Techniques Radiology, February 1, 2001; 218(2): 375 - 383. [Abstract] [Full Text]

				J. H. Song, I. R. Francis, J. F. Platt, R. H. Cohan, J. Mohsin, S. J. Kielb, M. Korobkin, and J. E. Montie Bladder Tumor Detection at Virtual Cystoscopy Radiology, January 1, 2001; 218(1): 95 - 100. [Abstract] [Full Text]

				M. Macari and A. J. Megibow Pitfalls of Using Three-Dimensional CT Colonography with Two-Dimensional Imaging Correlation Am. J. Roentgenol., January 1, 2001; 176(1): 137 - 143. [Full Text]

				M. Macari, M. Lavelle, I. Pedrosa, A. Milano, M. Dicker, A. J. Megibow, and X. Xue Effect of Different Bowel Preparations on Residual Fluid at CT Colonography Radiology, January 1, 2001; 218(1): 274 - 277. [Abstract] [Full Text]

				M. M. Morrin, R. J. Farrell, J. B. Kruskal, K. Reynolds, J. B. McGee, and V. Raptopoulos Utility of Intravenously Administered Contrast Material at CT Colonography Radiology, December 1, 2000; 217(3): 765 - 771. [Abstract] [Full Text]

				J. G. Fletcher, C. D. Johnson, T. J. Welch, R. L. MacCarty, D. A. Ahlquist, J. E. Reed, W. S. Harmsen, and L. A. Wilson Optimization of CT Colonography Technique: Prospective Trial in 180 Patients Radiology, September 1, 2000; 216(3): 704 - 711. [Abstract] [Full Text]

				C. D. Johnson and A. H. Dachman CT Colonography: The Next Colon Screening Examination? Radiology, August 1, 2000; 216(2): 331 - 341. [Abstract] [Full Text]

				P Pescatore, T Glucker, J Delarive, R Meuli, D Pantoflickova, B Duvoisin, P Schnyder, A L Blum, and G Dorta Diagnostic accuracy and interobserver agreement of CT colonography (virtual colonoscopy) Gut, July 1, 2000; 47(1): 126 - 130. [Abstract] [Full Text] [PDF]

				M. Macari, A. Milano, M. Lavelle, P. Berman, and A. J. Megibow Comparison of Time-Efficient CT Colonography with Two-and Three-Dimensional Colonic Evaluation for Detecting Colorectal Polyps Am. J. Roentgenol., June 1, 2000; 174(6): 1543 - 1549. [Abstract] [Full Text]