Philippe A. Puech

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BACKGROUND Multiparametric magnetic resonance imaging (mpMRI) may have a role in detecting clinically significant prostate cancer in men with raised serum prostate-specific antigen levels. Variations in technique and the interpretation of images have contributed to inconsistency in its reported performance characteristics. OBJECTIVE Our aim was to make(More)
Accurate localization and contouring of prostate are crucial issues in prostate cancer diagnosis and/or therapies. Although several semi-automatic and automatic segmentation methods have been proposed, manual expert correction remains necessary. We introduce a new method for automatic 3D segmentation of the prostate gland from magnetic resonance imaging(More)
PURPOSE To compare biopsy performance of two approaches for multiparametric magnetic resonance (MR)-targeted biopsy (TB) with that of extended systematic biopsy (SB) in prostate cancer (PCa) detection. MATERIALS AND METHODS This institutional review board-approved multicenter prospective study (May 2009 to January 2011) included 95 patients with informed(More)
PURPOSE To investigate the performance of a new method of automatic segmentation of prostatic multispectral magnetic resonance images into two zones: the peripheral zone and the central gland. METHODS The proposed method is based on a modified version of the evidential C-means clustering algorithm. The evidential C-means optimization process was modified(More)
OBJECTIVE •To compare magnetic resonance imaging (MRI)-targeted biopsies with extended systematic biopsies for the detection of significant prostate cancer. METHODS •In all, 555 consecutive patients with suspicion of prostate cancer had pre-biopsy dynamic contrast-enhanced 1.5-tesla (T) MRI with pelvic coil, 10-12 transrectal ultrasound-guided extended(More)
BACKGROUND A systematic literature review of magnetic resonance imaging (MRI)-targeted prostate biopsy demonstrates poor adherence to the Standards for the Reporting of Diagnostic Accuracy (STARD) recommendations for the full and transparent reporting of diagnostic studies. OBJECTIVE To define and recommend Standards of Reporting for MRI-targeted Biopsy(More)
PURPOSE We assessed the value of pelvic phased array dynamic contrast enhanced magnetic resonance imaging for predicting the intraprostatic location and volume of clinically localized prostate cancers. MATERIALS AND METHODS Suspicious areas on prospective pre-biopsy magnetic resonance imaging in 24 patients were assigned a magnetic resonance imaging(More)
OBJECTIVES To determine the diagnostic performance of dynamic contrast-enhanced-magnetic resonance imaging (DCE-MRI) in the identification of intraprostatic cancer foci related to cancer volume at histopathology, in patients with clinically localized cancer treated by radical prostatectomy, with whole-mount histopathologic sections as the reference(More)
PURPOSE Computerized detection of prostate cancer on T2-weighted MR images. METHODS The authors combined fractal and multifractal features to perform textural analysis of the images. The fractal dimension was computed using the Variance method; the multifractal spectrum was estimated by an adaptation of a multifractional Brownian motion model. Voxels were(More)
Uncomplicated infection of the urinary tract is frequent and usually resolves rapidly with treatment and imaging is unnecessary. Progression to complex infection often occurs in patients with predisposing factors. Imaging assists in evaluating the extent of disease, plays a role in directing therapy and guides interventional procedures if necessary. This(More)