PURPOSE: To evaluate and compare the imaging findings and staging of rectal carcinoma by using conventional magnetic resonance (MR) imaging, MR imaging with an enema of superparamagnetic ferristene-based contrast material, and MR imaging with an enema of ferristene solution plus intravenous injection of gadodiamide. MATERIALS AND METHODS: Twenty-nine patients (17 women, 12 men; age range, 39-91 years) referred with a diagnosis of rectal carcinoma were examined. Analysis of the rectal wall and staging of the tumor were performed. In all patients, the MR imaging findings were correlated with the histopathologic findings. RESULTS: The contrast material enema caused distention of the rectum and an intraluminal signal void, whereas the gadodiamide injection caused enhancement of the mucosa on T1-weighted images. This enhancement enabled evaluation of the normal rectal wall and differentiation of the mucosa, tunica muscularis, and perirectal space, which was not possible on the nonenhanced images. Double-contrast (ferristene solution plus gadodiamide) MR imaging was superior to imaging with only ferristene-based contrast material and had a sensitivity of 100%, specificity of 70%, and accuracy of 90% in distinguishing tumor stages worse than Dukes A. CONCLUSION: Double contrast material-enhanced MR imaging enables accurate rectal carcinoma staging, which is not possible at nonenhanced imaging.
PURPOSE: To evaluate and compare the imaging findings and staging of rectal carcinoma by using conventional magnetic resonance (MR) imaging, MR imaging with an enema of superparamagnetic ferristene-based contrast material, and MR imaging with an enema of ferristene solution plus intravenous injection of gadodiamide. MATERIALS AND METHODS: Twenty-nine patients (17 women, 12 men; age range, 39-91 years) referred with a diagnosis of rectal carcinoma were examined. Analysis of the rectal wall and staging of the tumor were performed. In all patients, the MR imaging findings were correlated with the histopathologic findings. RESULTS: The contrast material enema caused distention of the rectum and an intraluminal signal void, whereas the gadodiamide injection caused enhancement of the mucosa on T1-weighted images. This enhancement enabled evaluation of the normal rectal wall and differentiation of the mucosa, tunica muscularis, and perirectal space, which was not possible on the nonenhanced images. Double-contrast (ferristene solution plus gadodiamide) MR imaging was superior to imaging with only ferristene-based contrast material and had a sensitivity of 100%, specificity of 70%, and accuracy of 90% in distinguishing tumor stages worse than Dukes A. CONCLUSION: Double contrast material-enhanced MR imaging enables accurate rectal carcinoma staging, which is not possible at nonenhanced imaging.
Authors: Ken Herrmann; Ralph A Bundschuh; Robert Rosenberg; Stefan Schmidt; Christine Praus; Michael Souvatzoglou; Karen Becker; Tibor Schuster; Markus Essler; Hinrich A Wieder; Helmut Friess; Sibylle I Ziegler; Markus Schwaiger; Bernd J Krause Journal: Mol Imaging Biol Date: 2011-10 Impact factor: 3.488
Authors: Young Taik Oh; Myeong Jin Kim; Joon Seok Lim; Joo Hee Kim; Kang Young Lee; Nam Kyu Kim; Won Ho Kim; Ki Whang Kim Journal: Korean J Radiol Date: 2005 Jan-Mar Impact factor: 3.500
Authors: Hinrich A Wieder; Hans Geinitz; Robert Rosenberg; Florian Lordick; Karen Becker; Alexander Stahl; Ernst Rummeny; Jörg R Siewert; Markus Schwaiger; Jens Stollfuss Journal: Eur J Nucl Med Mol Imaging Date: 2006-12-29 Impact factor: 10.057
Authors: Elsa Iannicelli; Sara Di Renzo; Mario Ferri; Emanuela Pilozzi; Marco Di Girolamo; Alessandra Sapori; Vincenzo Ziparo; Vincenzo David Journal: Korean J Radiol Date: 2014-01-08 Impact factor: 3.500