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In addition, in our experience, tumour sizes are generally measured on T2WI or DWI in clinical practice [3]. Lastly, variability in estimates of tumour volume between radiologists was not assessed. In conclusion, estimates of the volume of known prostate tumours using MRI tended to substantially underestimate actual tumour volumes, with wide variability in terms of the extent of this underestimation across individual http://www.selleck.cn/products/Verteporfin(Visudyne).html cases. The underestimation was more pronounced on the ADC map than on T2WI, as well as for tumours with a higher Gleason score and higher MRI suspicion score. These findings have implications for efforts to use MRI to guide risk assessment in candidate selection and choice of treatment of PCa. Future studies may explore the utility of our findings to define a volume surrounding the MRI-based lesion to be covered by targeted therapy. We would like to acknowledge Artem Mikheev for his work on the co-registration process. Funding was received from the Joseph and Diane Steinberg Charitable http://www.selleckchem.com/products/VX-770.html Trust, an Association Fran?aise d'Urologie grant (bourse de l'AFU 2012) and grant 1UL1RR029893 from the National Center for Research Resources, National Institutes of Health. J.L.N, C.O., H.R., F.-M.D., J. M. and A.B.R. have nothing to disclose. S.S.T. is a consultant for GTX, Healthtronics and Bayer, speaker for Janssen, and has royalties from Elsevier, but has no direct financial conflict of interest. ""To prospectively evaluate the effect of prostate biopsy on erectile and voiding function at multiple time points following biopsy. All men who underwent transrectal ultrasound and prostate biopsy completed an International Index of Erectile http://www.selleckchem.com/products/ch5424802.html Function (IIEF-5) and International Prostate Symptom Score (IPSS) before the procedure and at 1 week, 4 weeks, and 3 months after the biopsy. Statistical analyses used were a general descriptive analysis, continuous variables using a T test, and categorical data using chi-square analysis. A paired T test was used to compare each patient's baseline score to their own follow up surveys. 220 patients were enrolled. Mean age was 64.1 years with a mean PSA of 6.7 ng/dL. At initial presentation 38.6% reported no ED, 22.3% mild ED, 15.5% mild to moderate ED, 10% moderate ED, and 13.6% with severe ED. On paired T test there was a statistically significant reduction in IIEF-5 score at 1 week post biopsy compared to pre-biopsy (18.2 versus 15.5), p