RATIONALE AND OBJECTIVES: To improve the conspicuity of bladder tumors in a virtual environment, we developed an algorithm for color mapping the thickness of the bladder wall. The purpose of this study was to demonstrate the feasibility of this algorithm as a component of virtual CT cystoscopy. METHODS: Five subjects with a history of superficial transitional-cell carcinoma of the bladder underwent helical CT scanning after insufflation of the bladder with air. Source images were transformed into three-dimensional models, and the thickness of the bladder wall was demarcated by using a new computer algorithm and a fixed color scale. Results were compared with those obtained by conventional cystoscopy. RESULTS: Three tumors, one site of benign wall thickening, and normal wall thickness were correctly identified by using axial source images and virtual cystoscopy with color mapping. CONCLUSIONS: Color mapping of bladder wall thickness is feasible and demonstrates both normal and thickened urothelium. Its value in identification of small or sessile tumors will require further trials.
RATIONALE AND OBJECTIVES: To improve the conspicuity of bladder tumors in a virtual environment, we developed an algorithm for color mapping the thickness of the bladder wall. The purpose of this study was to demonstrate the feasibility of this algorithm as a component of virtual CT cystoscopy. METHODS: Five subjects with a history of superficial transitional-cell carcinoma of the bladder underwent helical CT scanning after insufflation of the bladder with air. Source images were transformed into three-dimensional models, and the thickness of the bladder wall was demarcated by using a new computer algorithm and a fixed color scale. Results were compared with those obtained by conventional cystoscopy. RESULTS: Three tumors, one site of benign wall thickening, and normal wall thickness were correctly identified by using axial source images and virtual cystoscopy with color mapping. CONCLUSIONS: Color mapping of bladder wall thickness is feasible and demonstrates both normal and thickened urothelium. Its value in identification of small or sessile tumors will require further trials.
Authors: Laura C Wiegand; Simon K Warfield; James J Levitt; Yoshio Hirayasu; Dean F Salisbury; Stephan Heckers; Sylvain Bouix; Daniel Schwartz; Magdalena Spencer; Chandlee C Dickey; Ron Kikinis; Ferenc A Jolesz; Robert W McCarley; Martha E Shenton Journal: Am J Psychiatry Date: 2005-01 Impact factor: 18.112
Authors: S Schroeder; A F Kopp; B Ohnesorge; H Loke-Gie; A Kuettner; A Baumbach; C Herdeg; C D Claussen; K R Karsch Journal: Heart Date: 2002-03 Impact factor: 5.994
Authors: Lennox Hoyte; Wen Ye; Linda Brubaker; Julia R Fielding; Mark E Lockhart; Marta E Heilbrun; Morton B Brown; Simon K Warfield Journal: J Magn Reson Imaging Date: 2011-03 Impact factor: 4.813
Authors: Lennox Hoyte; Linda Brubaker; Julia R Fielding; Mark E Lockhart; Marta E Heilbrun; Caryl G Salomon; Wen Ye; Morton B Brown Journal: J Magn Reson Imaging Date: 2009-08 Impact factor: 4.813
Authors: Laura C Wiegand; Simon K Warfield; James J Levitt; Yoshio Hirayasu; Dean F Salisbury; Stephan Heckers; Chandlee C Dickey; Ron Kikinis; Ferenc A Jolesz; Robert W McCarley; Martha E Shenton Journal: Biol Psychiatry Date: 2004-01-15 Impact factor: 13.382