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https://www.readbyqxmd.com/read/28194505/adenomatous-dominant-benign-prostatic-hyperplasia-adbph-as-a-predictor-for-clinical-success-following-prostate-artery-embolization-an-age-matched-case-control-study
#1
M W Little, P Boardman, A C Macdonald, N Taylor, R Macpherson, J Crew, C R Tapping
PURPOSE: To investigate the clinical impact of performing prostate artery embolization (PAE) on patients with adenomatous-dominant benign prostatic hyperplasia (AdBPH). MATERIALS AND METHODS: Twelve patients from the ongoing proSTatic aRtery EmbolizAtion for the treatMent of benign prostatic hyperplasia (STREAM) trial were identified as having AdBPH; defined as two or more adenomas within the central gland of ≥1 cm diameter on multi-parametric MRI (MP-MRI). These patients were age-matched with patients from the STREAM cohort, without AdBPH...
February 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28182304/benign-prostatic-hyperplasia-after-prostatic-arterial-embolization-in-a-canine-model-a-3t-multiparametric-mri-and-whole-mount-step-section-pathology-correlated-longitudinal-study
#2
Basen Li, Anhui Xu, Nan Wang, Xiangde Min, Zhaoyan Feng, Ming Deng, Liang Li, Jie Cai, Zhen Kang, Kehua Jiang, Dong Kuang, Liang Wang
PURPOSE: To explore the morphological and functional characteristics of prostatic arterial embolization (PAE) in a canine model of benign prostatic hyperplasia (BPH) with 3T multiparametric magnetic resonance imaging (mp-MRI) and whole-mount step-section pathology correlation. MATERIALS AND METHODS: Eight adult male beagle dogs with hormone-induced BPH underwent 3T mp-MRI before and 1, 3, and 6 months after PAE, with subsequent whole-mount step-section pathologic assessment...
February 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28169303/prostate-cancer-improving-diagnosis-can-mp-mri-fulfil-its-promis
#3
David Killock
No abstract text is available yet for this article.
February 7, 2017: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/28157066/multiparametric-mri-in-detection-and-staging-of-prostate-cancer
#4
Lars Boesen
BACKGROUND: Prostate cancer (PCa) is the second leading cause of cancer-related mortality and the most frequently diagnosed male malignant disease among men in the Nordic countries. The manifestation of PCa ranges from indolent to highly aggressive disease and due to this high variation in PCa progression, the diagnosis and subsequent treatment planning can be challenging. The current diagnostic approach with PSA testing and digital rectal examination followed by transrectal ultrasound biopsies (TRUS-bx) lack in both sensitivity and specificity in PCa detection and offers limited information about the aggressiveness and stage of the cancer...
February 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28144814/intravoxel-incoherent-motion-ivim-%C3%A2-diffusion-weighted-imaging-dwi-in-the-periferic-prostate-cancer-detection-and-stratification
#5
Filippo Pesapane, Francesca Patella, Enrico Maria Fumarola, Silvia Panella, Anna Maria Ierardi, Giovanni Guido Pompili, Giuseppe Franceschelli, Salvatore Alessio Angileri, Alberto Magenta Biasina, Gianpaolo Carrafiello
The aim of this study was to compare the Intravoxel Incoherent Motion (IVIM) parameters between healthy Peripheral Zone (PZ), Benign Prostatic Hyperplasia (BPH) and Prostate Cancer (PCa) and compare them to assess whether there was correlation with Gleason Score (GS) grading system. Thirty-one patients with suspect of PCa underwent 1.5T Multi-Parametric Magnetic Resonance Imaging (MP-MRI) with endorectal coil with a protocol including T2WI, DWI using 10 b values (0, 10, 20, 30, 50, 80, 100, 200, 400, 1000 s/mm(2)) and DCE...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28143868/pre-biopsy-mp-mri-can-help-to-improve-the-predictive-performance-in-prostate-cancer-a-prospective-study-in-1478-consecutive-patients
#6
Rui Wang, Jing Wang, Ge Gao, Juan Hu, Yuanyuan Jiang, Zhenlong Zhao, Xiaodong Zhang, Yu-Dong Zhang, Xiaoying Wang
PURPOSE: To investigate whether pre-biopsy multi-parametric (mp) MRI can help to improve predictive performance in prostate cancer (PCa). EXPERIMENTAL DESIGN: Based on a support vector machine (SVM) analysis, we prospectively modeled clinical data (age, PSA, DRE, TRUS, PSA density and prostate volume) and mp-MRI findings (PI-RADS score and TNM stage) on 985 men to predict the risk of PCa. The new nomogram was validated on 493 patients treated at a same institution...
January 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28143433/developing-a-nomogram-based-on-multiparametric-magnetic-resonance-imaging-for-forecasting-high-grade-prostate-cancer-to-reduce-unnecessary-biopsies-within-the-prostate-specific-antigen-gray-zone
#7
Xiang-Ke Niu, Jun Li, Susant Kumar Das, Yan Xiong, Chao-Bing Yang, Tao Peng
BACKGROUND: Since 1980s the application of Prostate specific antigen (PSA) brought the revolution in prostate cancer diagnosis. However, it is important to underline that PSA is not the ideal screening tool due to its low specificity, which leads to the possible biopsy for the patient without High-grade prostate cancer (HGPCa). Therefore, the aim of this study was to establish a predictive nomogram for HGPCa in patients with PSA 4-10 ng/ml based on Prostate Imaging Reporting and Data System version 2 (PI-RADS v2), MRI-based prostate volume (PV), MRI-based PV-adjusted Prostate Specific Antigen Density (adjusted-PSAD) and other traditional classical parameters...
February 1, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28140460/factors-predicting-prostate-cancer-upgrading-on-magnetic-resonance-imaging-targeted-biopsy-in-an-active-surveillance-population
#8
Win Shun Lai, Jennifer B Gordetsky, John V Thomas, Jeffrey W Nix, Soroush Rais-Bahrami
BACKGROUND: The objective of this study was to create a nomogram model integrating clinical and multiparametric magnetic resonance imaging (MP-MRI)-based variables to predict prostate cancer upgrading in a population of active surveillance (AS) patients. METHODS: Prostate cancer patients on AS who underwent MP-MRI with magnetic resonance imaging (MRI)/ultrasound (US) fusion-guided biopsy were identified. Clinical and imaging variables, including the prostate-specific antigen density (PSAD), number of lesions, total lesion volume, total lesion density, Prostate Imaging Reporting and Data System magnetic resonance imaging suspicion score (MRI-SS), and duration between prereferral systematic and MRI/US fusion-guided biopsy sessions, were assessed...
January 31, 2017: Cancer
https://www.readbyqxmd.com/read/28139419/prostate-mri-for-brachytherapists-diagnosis-imaging-pitfalls-and-post-therapy-assessment
#9
REVIEW
A M Venkatesan, R J Stafford, C Duran, P D Soni, A Berlin, P W McLaughlin
Optimal integration of multiparametric MRI (mp MRI) into prostate brachytherapy practice necessitates an understanding of imaging findings pertinent to prostate cancer detection and staging. This review will summarize prostate cancer imaging findings and tumor staging on mp MRI, including an overview of the Prostate Imaging Reporting and Data System (PIRADS)-structured reporting schema, mp MRI findings observed in the post-therapy setting including cases of post-treatment recurrence, and MRI concepts integral to successful salvage brachytherapy...
January 27, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28111879/detection-of-prostate-cancer-using-magnetic-resonance-imaging-ultrasonography-fusion-targeted-biopsy-in-african-american-men
#10
Toshitaka Shin, Thomas B Smyth, Osamu Ukimura, Nariman Ahmadi, Andre Luis de Castro Abreu, Masakatsu Oishi, Hiromitsu Mimata, Inderbir S Gill
OBJECTIVE: To assess the diagnostic yield of targeted prostate biopsy in African-American (A-A) men using image fusion of multi-parametric magnetic resonance imaging (mp-MRI) with real-time trans-rectal ultrasonography (US). PATIENTS AND METHODS: We retrospectively analyzed 661 patients (117 A-A and 544 Caucasian) who underwent pre-biopsy mp-MRI and the following MRI/US fusion biopsy (UroStation, Koelis) (10/2012 - 8/2015). The mp-MRIs were reported on a 5-point Likert scale of suspicion...
January 23, 2017: BJU International
https://www.readbyqxmd.com/read/28110982/diagnostic-accuracy-of-multi-parametric-mri-and-trus-biopsy-in-prostate-cancer-promis-a-paired-validating-confirmatory-study
#11
Hashim U Ahmed, Ahmed El-Shater Bosaily, Louise C Brown, Rhian Gabe, Richard Kaplan, Mahesh K Parmar, Yolanda Collaco-Moraes, Katie Ward, Richard G Hindley, Alex Freeman, Alex P Kirkham, Robert Oldroyd, Chris Parker, Mark Emberton
BACKGROUND: Men with high serum prostate specific antigen usually undergo transrectal ultrasound-guided prostate biopsy (TRUS-biopsy). TRUS-biopsy can cause side-effects including bleeding, pain, and infection. Multi-parametric magnetic resonance imaging (MP-MRI) used as a triage test might allow men to avoid unnecessary TRUS-biopsy and improve diagnostic accuracy. METHODS: We did this multicentre, paired-cohort, confirmatory study to test diagnostic accuracy of MP-MRI and TRUS-biopsy against a reference test (template prostate mapping biopsy [TPM-biopsy])...
January 19, 2017: Lancet
https://www.readbyqxmd.com/read/28055249/volumetry-of-the-dominant-intraprostatic-tumour-lesion-intersequence-and-interobserver-differences-on-multiparametric-mri
#12
Hugh Harvey, Matthew R Orton, Veronica A Morgan, Chris Parker, David Dearnaley, Cyril Fisher, Nandita M deSouza
OBJECTIVES: To establish interobserver reproducibility of tumour volumetry on individual multiparametric(mp) prostate MRI sequences, validate measurements with histology and determine whether functional to morphological volume ratios reflect Gleason score. METHODS: Forty-one men with prostate cancer treated with prostatectomy (cohort 1) or radical radiotherapy (cohort 2) who had pre-treatment mp (T2-W, DW-, DCE-) MRI were studied retrospectively. Dominant intraprostatic lesions (DIPLs) were manually delineated on each sequence and volumes compared between observers (n=40 analysable) and with radical prostatectomy (n=20)...
January 5, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28048498/we-ab-202-12-voxel-wise-analysis-of-apparent-diffusion-coefficient-and-perfusion-maps-in-multi-parametric-mri-of-prostate-cancer
#13
K Engstroem, O Casares-Magaz, J Roervik, E Andersen, L Muren
PURPOSE: Multi-parametric MRI (mp-MRI) is being introduced in radiotherapy (RT) of prostate cancer, including for tumour delineation in focal boosting strategies. We recently developed an image-based tumour control probability model, based on cell density distributions derived from apparent diffusion coefficient (ADC) maps. Beyond tumour volume and cell densities, tumour hypoxia is also an important determinant of RT response. Since tissue perfusion from mp-MRI has been related to hypoxia we have explored the patterns of ADC and perfusion maps, and the relations between them, inside and outside prostate index lesions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047097/we-fg-206-09-association-of-prostate-volumes-with-restricted-diffusion-and-prostate-cancer-aggressiveness
#14
Y Tschudi
PURPOSE: To create an automatic workflow for evaluation of thresholds of restricted diffusion, based on Apparent Diffusion Coefficient (ADC) values in multiparametric (mp)MRI of the prostate. To investigate the association of these volumes with biopsy Gleason Score (GS). METHODS: Patients with prostate cancer, imaged on 3T Discovery MR750 (GE, Waukesha, WI) magnet were selected from departmental database based on the presence of mpMRI exam. All subsequent analyses were performed using Java plugins in MIM (MIM, Cleveland, Ohio)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046902/su-d-207a-03-potential-role-of-bold-mri-in-discrimination-of-aggressive-tumor-habitat-in-prostate-cancer
#15
J Ford, C Lopez, Y Tschudi, A Breto, K Padgett, A Pollack, R Stoyanova
PURPOSE: To determine whether blood oxygenation level dependent (BOLD) MRI signal measured in prostate cancer patients, in addition to quantitative diffusion and perfusion parameters from multiparametric (mp)MRI exams, can help discriminate aggressive and/or radioresistant lesions. METHODS: Several ongoing clinical trials in our institution require mpMRI exam to determine eligibility (presence of identifiable tumor lesion on mpMRI) and prostate volumes for dose escalation...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28039927/multi-center-validation-of-prostate-tumor-localization-using-multi-parametric-mri-and-prior-knowledge
#16
Cuong Viet Dinh, Peter Steenbergen, Ghazaleh Ghobadi, Henk van der Poel, Stijn W T P J Heijmink, Jeroen de Jong, Sofie Isebaert, Karin Haustermans, Evelyne Lerut, Raymond Oyen, Yangming Ou, Davatzikos Christos, Uulke A van der Heide
PURPOSE: Tumor localization provides crucial information for radiotherapy dose differentiation treatments, such as focal dose escalation and dose painting by numbers, which aim at achieving tumor control with minimal side effects. Multi-parametric (mp-)MRI is increasingly used for tumor detection and localization in prostate because of its ability to visualize tissue structure and to reveal tumor characteristics. However, it can be challenging to distinguish cancer, particularly in the transition zone...
December 31, 2016: Medical Physics
https://www.readbyqxmd.com/read/28008754/risk-factors-for-gleason-score-upgrading-following-radical-prostatectomy-a-review-of-the-current-literature
#17
David R Alchin, Declan Murphy, Nathan Lawrentschuk
INTRODUCTION: Gleason score discordance can confound optimal treatment allocation of patients diagnosed with prostate cancer and place these patients at risk of worse oncological outcomes. Its prevalence remains endemic; its exact causation remains unknown. The objective of this review was to examine the observational studies of patient cohorts who have undergone radical prostatectomy with the aim of identifying any preoperative variables that may be associated with an upgrade in final prostatectomy Gleason score...
December 22, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/27842676/biparametric-3t-magentic-resonance-imaging-for-prostatic-cancer-detection-in-a-biopsy-na%C3%A3-ve-patient-population-a-further-improvement-of-pi-rads-v2
#18
COMPARATIVE STUDY
Arnaldo Stanzione, Massimo Imbriaco, Sirio Cocozza, Ferdinando Fusco, Giovanni Rusconi, Carmela Nappi, Vincenzo Mirone, Francesco Mangiapia, Arturo Brunetti, Alfonso Ragozzino, Nicola Longo
OBJECTIVES: To prospectively determine the diagnostic accuracy of a biparametric 3T magnetic resonance imaging protocol (BP-MRI) for prostatic cancer detection, compared to a multiparametric MRI protocol (MP-MRI), in a biopsy naïve patient population. METHODS: Eighty-two untreated patients (mean age 65±7.6years) with clinical suspicion of prostate cancer and/or altered prostate-specific antigen (PSA) levels underwent a MP-MRI, including T2-weighted imaging, diffusion-weighted imaging (with the correspondent apparent diffusion coefficient maps) and dynamic contrast enhanced sequence, followed by prostate biopsy...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27800057/comparison-of-prostate-mri-3d-transrectal-ultrasound-fusion-biopsy-for-first-time-and-repeat-biopsy-patients-with-previous-atypical-small-acinar-proliferation
#19
Derek W Cool, Cesare Romagnoli, Jonathan I Izawa, Joseph Chin, Lori Gardi, David Tessier, Ashley Mercado, Jonathan Mandel, Aaron D Ward, Aaron Fenster
INTRODUCTION: This study evaluates the clinical benefit of magnetic resonance-transrectal ultrasound (MR-TRUS) fusion biopsy over systematic biopsy between first-time and repeat prostate biopsy patients with prior atypical small acinar proliferation (ASAP). MATERIALS: 100 patients were enrolled in a single-centre prospective cohort study: 50 for first biopsy, 50 for repeat biopsy with prior ASAP. Multiparameteric magnetic resonance imaging (MP-MRI) and standard 12-core ultrasound biopsy (Std-Bx) were performed on all patients...
September 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/27769214/innovate-a-prospective-cohort-study-combining-serum-and-urinary-biomarkers-with-novel-diffusion-weighted-magnetic-resonance-imaging-for-the-prediction-and-characterization-of-prostate-cancer
#20
Edward Johnston, Hayley Pye, Elisenda Bonet-Carne, Eleftheria Panagiotaki, Dominic Patel, Myria Galazi, Susan Heavey, Lina Carmona, Alexander Freeman, Giorgia Trevisan, Clare Allen, Alexander Kirkham, Keith Burling, Nicola Stevens, David Hawkes, Mark Emberton, Caroline Moore, Hashim U Ahmed, David Atkinson, Manuel Rodriguez-Justo, Tony Ng, Daniel Alexander, Hayley Whitaker, Shonit Punwani
BACKGROUND: Whilst multi-parametric magnetic resonance imaging (mp-MRI) has been a significant advance in the diagnosis of prostate cancer, scanning all patients with elevated prostate specific antigen (PSA) levels is considered too costly for widespread National Health Service (NHS) use, as the predictive value of PSA levels for significant disease is poor. Despite the fact that novel blood and urine tests are available which may predict aggressive disease better than PSA, they are not routinely employed due to a lack of clinical validity studies...
October 21, 2016: BMC Cancer
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