PMID- 11050634 OWN - NLM STAT- MEDLINE DCOM- 20001214 LR - 20220318 IS - 1053-1807 (Print) IS - 1053-1807 (Linking) VI - 12 IP - 5 DP - 2000 Nov TI - Staging of rectal cancer by double-contrast MR imaging using the rectally administered superparamagnetic iron oxide contrast agent ferristene and IV gadodiamide injection: results of a multicenter phase II trial. PG - 651-60 AB - The aim of this study was to assess the accuracy of double-contrast magnetic resonance imaging (MRI) with rectal application of the superparamagnetic iron oxide contrast agent (SPIO) ferristene and IV gadodiamide for preoperative staging of rectal cancer. In a randomized phase II dose-ranging trial, 113 patients were studied preoperatively with one of four different formulations of ferristene (Abdoscan) as an enema before MRI. T1-weighted spin-echo (T1w SE) and T2w turbo spin-echo (TSE) single-contrast images were obtained as well as T1w SE and gradient-echo (GRE) double-contrast images after IV gadodiamide injection (Omniscan). Images were assessed qualitatively, and TNM tumor stage was compared with histopathology. High-viscosity ferristene formulations were superior to low-viscosity formulations in tumor staging (accuracy 90% vs 74%, P < 0.01). There was no significant difference between high and low iron content ferristene. MRI had a sensitivity of 97%, specificity of 50%, and accuracy of 82% for staging of rectal carcinoma higher than T2 stage. At receiver operator characteristic (ROC) analysis, MR differentiation between T1/T2 and T3/T4 tumor stages yielded a ROC index of 0.848. Double-contrast MRI is an accurate method for preoperative staging of rectal cancer. FAU - Maier, A G AU - Maier AG AD - Department of Radiology, University of Vienna, 1090 Vienna, Austria. andrea.maier@univie.ac.at FAU - Kersting-Sommerhoff, B AU - Kersting-Sommerhoff B FAU - Reeders, J W AU - Reeders JW FAU - Judmaier, W AU - Judmaier W FAU - Schima, W AU - Schima W FAU - Annweiler, A A AU - Annweiler AA FAU - Meusel, M AU - Meusel M FAU - Wallengren, N O AU - Wallengren NO LA - eng PT - Clinical Trial PT - Clinical Trial, Phase II PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PL - United States TA - J Magn Reson Imaging JT - Journal of magnetic resonance imaging : JMRI JID - 9105850 RN - 0 (Contrast Media) RN - 0 (Ferric Compounds) RN - 155773-56-1 (ferristene) RN - 84F6U3J2R6 (gadodiamide) RN - K2I13DR72L (Gadolinium DTPA) SB - IM EIN - J Magn Reson Imaging 2001 Mar;13(3):481 MH - Adenocarcinoma/diagnosis/*pathology/surgery MH - Administration, Rectal MH - Adult MH - Aged MH - Biopsy, Needle MH - Chi-Square Distribution MH - *Contrast Media MH - Dose-Response Relationship, Drug MH - Female MH - *Ferric Compounds MH - *Gadolinium DTPA MH - Humans MH - Image Processing, Computer-Assisted MH - Injections, Intravenous MH - Magnetic Resonance Imaging/*methods MH - Male MH - Middle Aged MH - Neoplasm Staging/methods MH - Preoperative Care MH - Probability MH - ROC Curve MH - Rectal Neoplasms/diagnosis/*pathology/surgery MH - Sensitivity and Specificity EDAT- 2000/10/26 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/10/26 11:00 PHST- 2000/10/26 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/10/26 11:00 [entrez] AID - 10.1002/1522-2586(200011)12:5<651::AID-JMRI1>3.0.CO;2-R [pii] AID - 10.1002/1522-2586(200011)12:5<651::aid-jmri1>3.0.co;2-r [doi] PST - ppublish SO - J Magn Reson Imaging. 2000 Nov;12(5):651-60. doi: 10.1002/1522-2586(200011)12:5<651::aid-jmri1>3.0.co;2-r.