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mpMRI Prostate

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https://www.readbyqxmd.com/read/28635568/additional-value-of-magnetic-resonance-targeted-biopsies-to-standard-transrectal-ultrasound-guided-biopsies-for-detection-of-clinically-significant-prostate-cancer
#1
Catrin von Below, Cecilia Wassberg, Mona Norberg, Anna Tolf, Joel Kullberg, Sam Ladjevardi, Michael Häggman, Anna Bill Axelson, Håkan Ahlström
OBJECTIVE: The aim of this study was to evaluate the additional value of magnetic resonance imaging-targeted biopsy (MRI-TB) to standard transrectal ultrasound-guided biopsy (SB) for detection of clinically significant prostate cancer (PCa). An additional aim was to compare the biopsy results to MRI evaluation using a Likert scale. MATERIALS AND METHODS: Patients with newly diagnosed localized PCa (n = 53) by clinical routine SB were prospectively included. The majority of the patients were scheduled for curative therapy before enrollment...
February 24, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28635336/new-advances-in-focal-therapy-for-early-stage-prostate-cancer
#2
Kae Jack Tay, Ariel A Schulman, Christina Sze, Efrat Tsivian, Thomas J Polascik
Prostate focal therapy offers men the opportunity to achieve oncological control while preserving sexual and urinary function. The prerequisites for successful focal therapy are to accurately identify, localize and completely ablate the clinically significant cancer(s) within the prostate. We aim to evaluate the evidence for current and upcoming technologies that could shape the future of prostate cancer focal therapy in the next five years. Areas Covered: Current literature on advances in patient selection using imaging, biopsy and biomarkers, ablation techniques and adjuvant treatments for focal therapy are summarized...
June 21, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28629785/-interest-using-3d-ultrasound-and-mri-fusion-biopsy-for-prostate-cancer-detection
#3
A Marien, A De Castro Abreu, I Gill, A Villers, O Ukimura
INTRODUCTION: The strategic therapy for prostate cancer depends on histo-pronostics data, which could be upgraded by obtaining targeted biopsies (TB) with MRI (magnetic resonance imagery) fusion 3D ultrasound. OBJECTIVES: To compare diagnostic yield of image fusion guided prostate biopsy using image fusion of multi-parametric MRI (mpMRI) with 3D-TRUS. MATERIALS AND METHODS: Between January 2010 and April 2013, 179 consecutive patients underwent outpatient TRUS biopsy using the real-time 3D TRUS tracking system (Urostation™)...
June 16, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28615793/classification-of-clinical-significance-of-mri-prostate-findings-using-3d-convolutional-neural-networks
#4
Alireza Mehrtash, Alireza Sedghi, Mohsen Ghafoorian, Mehdi Taghipour, Clare M Tempany, William M Wells, Tina Kapur, Parvin Mousavi, Purang Abolmaesumi, Andriy Fedorov
Prostate cancer (PCa) remains a leading cause of cancer mortality among American men. Multi-parametric magnetic resonance imaging (mpMRI) is widely used to assist with detection of PCa and characterization of its aggressiveness. Computer-aided diagnosis (CADx) of PCa in MRI can be used as clinical decision support system to aid radiologists in interpretation and reporting of mpMRI. We report on the development of a convolution neural network (CNN) model to support CADx in PCa based on the appearance of prostate tissue in mpMRI, conducted as part of the SPIE-AAPM-NCI PROSTATEx challenge...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28589399/prostate-biopsy-in-active-surveillance-protocols-immediate-re-biopsy-and-timing-of-subsequent-biopsies
#5
REVIEW
Jonathan H Wang, Tracy M Downs, E Jason Abel, Kyle A Richards, David F Jarrard
PURPOSE OF REVIEW: This manuscript reviews contemporary literature regarding prostate cancer active surveillance (AS) protocols as well as other tools that may guide the management of biopsy frequency and assess the possibility of progression in low-risk prostate cancer. RECENT FINDINGS: There is no consensus regarding the timing of surveillance biopsies; however, an immediate repeat biopsy within 12 months of diagnosis for patients considering AS confirms patients who have favorable risk disease yet also identifies patients who were undersampled initially...
July 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28589398/the-contemporary-role-of-multiparametric-magnetic-resonance-imaging-in-active-surveillance-for-prostate-cancer
#6
REVIEW
Ariel A Schulman, Christina Sze, Efrat Tsivian, Rajan T Gupta, Judd W Moul, Thomas J Polascik
PURPOSE OF REVIEW: Growing research supports the use of multiparametric magnetic resonance imaging (mpMRI) for the evaluation of localized prostate cancer (PCa). We highlight contemporary evidence supporting its use in active surveillance (AS). RECENT FINDINGS: The emerging approach to localized PCa favors risk-adapted screening, image-guided biopsies, and selective therapeutic interventions. mpMRI is increasingly critical to achieve each of these aims. Early evidence suggests a value of mpMRI before initial biopsy to guide fusion targeting and to rule out non-organ confined disease as well as in the initiation and serial monitoring of men on AS...
July 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28583630/evaluating-the-effect-of-rectal-distension-on-prostate-multiparametric-mri-image-quality
#7
Iztok Caglic, Nienke L Hansen, Rhys A Slough, Andrew J Patterson, Tristan Barrett
PURPOSE: To evaluate the effect of rectal distension on the quality of anatomical and functional prostate multiparametric (mp) MRI. MATERIALS AND METHODS: Multiparametric (mp) 3T-MRI images of 173 patients were independently evaluated by two radiologists in this retrospective study. Planimetry rectal volumes were derived and a subjective assessment of rectal distension was made using a 5-point Likert scale (1=no stool/gas, 5=large amount of stool/gas). Image quality of diffusion-weighted imaging (DWI) was evaluated using a 5-point Likert scale...
May 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28551679/multiparametric-mri-trus-fusion-prostate-biopsy-advantages-of-a-transperineal-approach
#8
Pietro Pepe, Antonio Garufi, Gian Domenico Priolo, Michele Pennisi
BACKGROUND/AIM: To evaluate the detection rate for clinically-significant prostate cancer (PCa) of transperineal (TP) vs. transrectal (TR) multiparametric MRI/TRUS (magnetic resonance imaging/transrectal ultrasound) fusion targeted-biopsy. PATIENTS AND METHODS: From January 2016 to December 2016, 150 men underwent repeat saturation transperineal prostate biopsy (SPBx; median 30 cores) combined with targeted mpMRI/TRUS TR and TP fusion biopsies (4 cores for each procedure) of suspicious MRI lesions (PI-RADS 3/5)...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28546032/application-of-prostate-imaging-reporting-and-data-system-version-2-pi-rads-v2-interobserver-agreement-and-positive-predictive-value-for-localization-of-intermediate-and-high-grade-prostate-cancers-on-multiparametric-magnetic-resonance-imaging
#9
Frank Chen, Steven Cen, Suzanne Palmer
RATIONALE AND OBJECTIVES: To evaluate interobserver agreement with the use of and the positive predictive value (PPV) of Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) for the localization of intermediate- and high-grade prostate cancers on multiparametric magnetic resonance imaging (mpMRI). MATERIALS AND METHODS: In this retrospective, institutional review board-approved study, 131 consecutive patients who had mpMRI followed by transrectal ultrasound-MR imaging fusion-guided biopsy of the prostate were included...
May 22, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28523503/hierarchical-cluster-analysis-to-aid-diagnostic-image-data-visualization-of-ms-and-other-medical-imaging-modalities
#10
Arul N Selvan, Laura M Cole, Lynne Spackman, Sarah Naylor, Chris Wright
Perceiving abnormal regions in the images of different medical modalities plays a crucial role in diagnosis and subsequent treatment planning. In medical images to visually perceive abnormalities' extent and boundaries requires substantial experience. Consequently, manually drawn region of interest (ROI) to outline boundaries of abnormalities suffers from limitations of human perception leading to inter-observer variability. As an alternative to human drawn ROI, it is proposed the use of a computer-based segmentation algorithm to segment digital medical image data...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28523355/mri-findings-in-men-on-active-surveillance-for-prostate-cancer-does-dutasteride-make-mri-visible-lesions-less-conspicuous-results-from-a-placebo-controlled-randomised-clinical-trial
#11
Francesco Giganti, Caroline M Moore, Nicola L Robertson, Neil McCartan, Charles Jameson, Simon R J Bott, Mathias Winkler, Giulio Gambarota, Brandon Whitcher, Ramiro Castro, Mark Emberton, Clare Allen, Alex Kirkham
OBJECTIVES: To investigate changes in the Apparent Diffusion Coefficient (ADC) using diffusion-weighted imaging (DWI) in men on active surveillance for prostate cancer taking dutasteride 0.5 mg or placebo. METHODS: We analysed 37 men, randomised to 6 months of daily dutasteride (n = 18) or placebo (n = 19), undergoing 3T multi-parametric Magnetic Resonance Imaging (mpMRI) scans at baseline and 6 months. Images were reviewed blind to treatment allocation and clinical information...
May 18, 2017: European Radiology
https://www.readbyqxmd.com/read/28513296/confirmatory-biopsy-of-men-under-active-surveillance-extended-versus-saturation-versus-multiparametric-magnetic-resonance-imaging-transrectal-ultrasound-fusion-prostate-biopsy
#12
Pietro Pepe, Sebastiano Cimino, Antonio Garufi, Giandomenico Priolo, Giorgio Ivan Russo, Raimondo Giardina, Giulio Reale, Michele Pennisi, Giuseppe Morgia
OBJECTIVE: The aim of this study was to evaluate the detection rate for clinically significant prostate cancer (PCa) after multiparametric magnetic resonance imaging (mpMRI)/transrectal ultrasound (TRUS) fusion biopsy versus extended biopsy or saturation prostate biopsy (SPBx) in men enrolled on active surveillance (AS). MATERIALS AND METHODS: From May 2013 to January 2016, 100 men with very low-risk PCa were enrolled on AS. Eligible criteria were: life expectancy greater than 10 years, cT1c, prostate-specific antigen (PSA) below 10 ng/ml, PSA density less than 0...
May 17, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28503230/utility-of-preoperative-3-tesla-pelvic-phased-array-multiparametric-magnetic-resonance-imaging-in-prediction-of-extracapsular-extension-and-seminal-vesicle-invasion-of-prostate-cancer-and-its-impact-on-surgical-margin-status-experience-at-a-canadian-academic
#13
Taehyoung Lee, Jen Hoogenes, Ian Wright, Edward D Matsumoto, Bobby Shayegan
INTRODUCTION: To evaluate the utility of 3 Tesla (3T) pelvic phased-array (PPA) multiparametric magnetic resonance imaging (mpMRI) to predict extracapsular extension (ECE) and seminal vesicle invasion (SVI) and its subsequent effect on radical prostatectomy (RP) surgical margin status. METHODS: A retrospective evaluation was conducted of RP patients who underwent preoperative 3T PPA mpMRI (without endorectal coil) based on clinical probability of adverse pathological features...
May 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28501565/prostate-zonal-anatomy-correlates-with-the-detection-of-prostate-cancer-on-multiparametric-magnetic-resonance-imaging-ultrasound-fusion-targeted-biopsy-in-patients-with-a-solitary-pi-rads-v2-scored-lesion
#14
Jamil S Syed, Kevin A Nguyen, Cayce B Nawaf, Ansh M Bhagat, Steffen Huber, Angelique Levi, Peter Humphrey, Jeffrey C Weinreb, Peter G Schulam, Preston C Sprenkle
PURPOSE: To evaluate the positive predictive value (PPV) of the Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) assessment method in patients with a single suspicious finding on prostate multiparametric magnetic resonance imaging (mpMRI). PATIENTS AND METHODS: A total of 176 patients underwent MRI/ultrasound fusion-targeted prostate biopsy after the detection of a single suspicious finding on mpMRI. The PPV for cancer detection was determined based on PI-RADS v2 assessment score and location...
May 10, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28488844/mri-in-prostate-cancer-detection-and-management-a-systematic-review
#15
Fabio Monni, Paolo Fontanella, Angelica Grasso, Peter Wiklund, Yen-Chuan Ou, Marco Randazzo, Bernardo Rocco, Emanuele Montanari, Giampaolo Bianchi
INTRODUCTION: The aim of our work was to evaluate the role of multi-parametric MRI (mpMRI) in detection and management of prostate cancer (PC); specifically investigating the efficacy of mpMRI-based biopsy techniques in terms of diagnostic yield of significant prostate neoplasm and the improved management of patient who choose conservative treatments or active surveillance. EVIDENCE ACQUISITION: A systematic and critical analysis through Medline, Embase, Scopus and Web of Science databases was carried out in March 2016, following the PRISMA ("Preferred Reporting Items for Systematic Reviews and Meta-Analyses") statement...
May 8, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28476529/is-suspicious-upstaging-on-multiparametric-magnetic-resonance-imaging-useful-in-improving-the-reliability-of-prostate-cancer-research-international-active-surveillance-prias-criteria-use-of-the-k-cap-registry
#16
Sangjun Yoo, Jun Hyuk Hong, Seok-Soo Byun, Ji Youl Lee, Byung Ha Chung, Choung-Soo Kim
BACKGROUND AND OBJECTIVE: To evaluate the clinical effects of suspicious upstaging on multiparametric magnetic resonance imaging (mpMRI) for improving the quality of Prostate Cancer Research International Active Surveillance (PRIAS) criteria. MATERIAL AND METHODS: A total of 363 patients with low-risk prostate cancer (PCa) were selected from the K-CaP registry (the multicenter Korean PCa Database). Patients were divided into 2 groups according to the results of mpMRI (with or without suspicious upstaging)...
May 2, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28473595/intra-individual-comparison-of-18-f-psma-1007-pet-ct-multi-parametric-mri-and-radical-prostatectomy-specimen-in-patients-with-primary-prostate-cancer-a-retrospective-proof-of-concept-study
#17
Claudia Kesch, Maria Vinsensia, Jan P Radtke, Heinz P Schlemmer, Martina Heller, Elena Ellert, Tim Holland-Letz, Stefan Duensing, Nils Grabe, Ali Afshar-Oromieh, Kathrin Wieczorek, Martin Schäfer, Oliver C Neels, Jens Cardinale, Clemens Kratochwil, Markus Hohenfellner, Klaus Kopka, Uwe Haberkorn, Boris A Hadaschik, Frederik L Giesel
Background:(68)Ga-prostate-specific membrane antigen (PSMA)-11-positron-emission-tomography (PET)/ computer-tomography (CT) represents an advanced method for staging of primary prostate cancer (PCa) and diagnosis of recurrent or metastatic PCa. However, due to the narrow availability of (68)Ga the development of alternative tracers is of high interest. Objective: To examine the value of the new PET tracer (18)F-PSMA-1007 for staging of local disease by comparing it to multiparametric magnetic resonance imaging (mpMRI) and radical prostatectomy (RP) histopathology...
May 4, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28463931/multiparametric-magnetic-resonance-imaging-of-the-prostate-repeatability-of-volume-and-apparent-diffusion-coefficient-quantification
#18
Andriy Fedorov, Mark G Vangel, Clare M Tempany, Fiona M Fennessy
OBJECTIVES: The aim of this study was to evaluate the repeatability of a region of interest (ROI) volume and mean apparent diffusion coefficient (ADC) in standard-of-care 3 T multiparametric magnetic resonance imaging (mpMRI) of the prostate obtained with the use of endorectal coil. MATERIALS AND METHODS: This prospective study was Health Insurance Portability and Accountability Act compliant, with institutional review board approval and written informed consent...
May 1, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28440325/multiparametric-mri-ultrasound-fusion-guided-biopsy-decreases-detection-of-indolent-cancer-in-african-american-men
#19
M Kongnyuy, M M Siddiqui, A K George, A Muthigi, A Sidana, M Maruf, B Turkbey, P L Choyke, B J Wood, P A Pinto
BACKGROUND: Analysis of systematic 12-core biopsies (SBx) has shown that African-American (AA) men tend to harbor higher risk prostate cancer (PCa) at presentation relative to other races. Multiparametric magnetic resonance imaging (mpMRI) and MRI-ultrasound fusion-guided biopsy (FBx) have been shown to diagnose more intermediate- and high-risk PCa in the general population; however, the efficacy in AA remains largely uncharacterized. We aim to evaluate the utility of FBx in an AA patient cohort...
April 25, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28440322/does-mpmri-improve-clinical-criteria-in-selecting-men-with-prostate-cancer-for-active-surveillance
#20
K J Tay, R T Gupta, J Holtz, R K Silverman, E Tsivian, A Schulman, J W Moul, T J Polascik
BACKGROUND: Active surveillance (AS) has excellent short to medium term outcomes in well-selected prostate cancer patients. Traditional biopsy-based selection criteria have been criticized for inaccurate determination of cancer grade and extent. We evaluated the incremental benefit of multiparametric magnetic resonance imaging (mpMRI) in patient selection using various AS criteria. METHODS: We retrospectively evaluated men who received mpMRI before radical prostatectomy between 2011 and 2014...
April 25, 2017: Prostate Cancer and Prostatic Diseases
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