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https://www.readbyqxmd.com/read/29331622/value-of-serial-multiparametric-magnetic-resonance-imaging-and-magnetic-resonance-imaging-guided-biopsies-in-men-with-low-risk-prostate-cancer-on-active-surveillance-after-1-yr-follow-up
#1
Esther Hendrika Johanna Hamoen, Caroline M A Hoeks, Diederik M Somford, Inge M van Oort, Henk Vergunst, Jorg R Oddens, Geert A Smits, Leonard P Bokhorst, J Alfred Witjes, Maroeska M Rovers, Christina A Hulsbergen-van de Kaa, Jelle O Barentsz
BACKGROUND: Active surveillance (AS) aims to reduce overtreatment of low-risk prostate cancer (PC). Incorporating multiparametric magnetic resonance imaging (mp-MRI) and MR-guided biopsy (MRGB) in an AS protocol might contribute to more accurate identification of AS candidates. OBJECTIVE: To evaluate the value of 3T mp-MRI and MRGB in PC patients on AS at inclusion and after 12-mo follow-up. DESIGN, SETTING, AND PARTICIPANTS: Patients with cT1c-cT2 PC, prostate-specific antigen (PSA) ≤10ng/ml, PSA density <0...
January 10, 2018: European Urology Focus
https://www.readbyqxmd.com/read/29331575/validation-of-mri-to-trus-registration-for-high-dose-rate-prostate-brachytherapy
#2
Eric Poulin, Karim Boudam, Csaba Pinter, Samuel Kadoury, Andras Lasso, Gabor Fichtinger, Cynthia Ménard
PURPOSE: The objective of this study was to develop and validate an open-source module for MRI to transrectal ultrasound (TRUS) registration to support tumor-targeted prostate brachytherapy. METHODS AND MATERIALS: In this study, 15 patients with prostate cancer lesions visible on multiparametric MRI were selected for the validation. T2-weighted images with 1-mm isotropic voxel size and diffusion weighted images were acquired on a 1.5T Siemens imager. Three-dimensional (3D) TRUS images with 0...
January 10, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29331524/strategies-and-technical-challenges-for-imaging-oligometastatic-disease-recommendations-from-the-european-organisation-for-research-and-treatment-of-cancer-imaging-group
#3
REVIEW
Nandita M deSouza, Yan Liu, Arturo Chiti, Daniela Oprea-Lager, Géraldine Gebhart, Bernard E Van Beers, Ken Herrmann, Frederic E Lecouvet
Patients with oligometastatic disease (OMD) often have controllable symptoms, and cures are possible. Technical improvements in surgery and radiotherapy have introduced the option of metastasis-directed ablative therapies as an adjunct or alternative to standard-of-care systemic therapies. Several clinical trials and registries are investigating the benefit of these therapeutic approaches across several cancer sites. This requires that patients are correctly included and followed with appropriate imaging. This article discusses the evidence and offers recommendations for the implementation of standard-of-care (Response Evaluation Criteria in Solid Tumours measurements on computed tomography [CT], magnetic resonance imaging [MRI] and bone scintigraphy) and advanced imaging modalities (functional, metabolic and radionuclide targeted) for identifying and following up patients with OMD...
January 10, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29331081/quantitative-fe-mri-determination-of-the-dynamics-of-psma-targeted-spions-discriminates-among-prostate-tumor-xenografts-based-on-their-psma-expression
#4
Laurel O Sillerud
BACKGROUND: There is a need for a quantitative MRI method for iron concentration magnetic resonance imaging suitable for measuring the delivery of targeted superparamagnetic iron oxide nanoparticles (SPIONs) to tumors. PURPOSE: To apply our newly developed [Fe]MRI method to the quantitative imaging in both space and time of the iron dynamics of anti-prostate specific membrane antigen (PSMA) conjugated SPIONs within human prostate tumor xenografts in nude mice. STUDY TYPE: Longitudinal...
January 13, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29330001/in-bore-3-0-t-magnetic-resonance-imaging-guided-transrectal-targeted-prostate-biopsy-in-a-repeat-biopsy-population-diagnostic-performance-complications-and-learning-curve
#5
Alexander Friedl, Jenifer Schneeweiss, Sabina Sevcenco, Klaus Eredics, Thomas Kunit, Martin Susani, Danijel Kivaranovic, Edith Eisenhuber-Stadler, Lukas Lusuardi, Clemens Brössner, Wolfgang Schima
OBJECTIVE: To evaluate the diagnostic performance and complication rate of the in-bore magnetic resonance imaging-guided transrectal targeted prostate biopsy (MRGB) in a repeat biopsy population on basis of a nearly four year learning curve (2014-2017). MATERIALS AND METHODS: A total of 142 consecutive males with a history of previous biopsies and persistent suspicion of prostate cancer (PCa) due to prostate specific antigen (PSA) elevation initially underwent MRGB in the case of prostate imaging reporting and data system (PI-RADS) 3-5 lesions...
January 9, 2018: Urology
https://www.readbyqxmd.com/read/29330000/histotripsy-treatment-of-benign-prostatic-enlargement-using-the-vortx-rx-system-initial-human-safety-and-efficacy-outcomes
#6
T G Schuster, J T Wei, K Hendlin, R Jahnke, W W Roberts
OBJECTIVES: To assess clinical safety (primary) and efficacy (secondary) of histotripsy for treatment of symptomatic benign prostatic enlargement (BPE) in a first-in human study. METHODS: Twenty-five male subjects with moderate to severe lower urinary tract symptoms (LUTS), prostate size between 30 and 80 grams and no evidence of prostate cancer were enrolled at two sites in a prospective, single-arm study. Treatment consisted of acoustic energy delivery through the perineum with integrated real-time TRUS monitoring using the Vortx RX system...
January 9, 2018: Urology
https://www.readbyqxmd.com/read/29329996/to-prep-or-not-to-prep-that-is-the-question-a-randomized-trial-on-the-use-of-antiflatulent-medication-as-part-of-bowel-preparation-for-patients-having-image-guided-external-beam-radiation-therapy-to-the-prostate
#7
Merrylee McGuffin, Naila Devji, Lyann Kehoe, Anne Carty, Steve Russell, Lisa Di Prospero, Carlo DeAngelis, Alex Kiss, Danny Vesprini, Andrew Loblaw, Laura D'Alimonte
INTRODUCTION: Radiation therapy is a standard treatment option for prostate cancer. With growing use of escalated doses and tighter margins, procedures to limit rectal size variation are needed to reduce prostate motion, increase treatment accuracy, and minimize rectal toxicity. This prospective study was done to determine whether the introduction of an antiflatulent medication would decrease rectal distention at computed tomography (CT) simulation and throughout a course of radiation therapy...
November 4, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29327929/development-of-candidates-for-pet-imaging-of-ghrelin-receptor-in-disease-design-synthesis-and-evaluation-of-fluorine-bearing-quinazolinone-derivatives
#8
Jin-Qiang Hou, Michael S Kovacs, Savita Dhanvantari, Leonard G Luyt
Molecular imaging with PET (Positron Emission Tomography) is an attractive platform for non-invasive detection and assessment of disease. The development of a PET imaging agent targeting the ghrelin receptor (growth hormone secretagogue receptor type 1a or GHS-R1a) has the potential to lead to the detection and assessment of the higher than normal expression of GHS-R1a in diseases such as prostate, breast, and ovarian cancer. To enable the development of 18F radiopharmaceuticals, we have designed and synthesized three series of quinazolinone derivatives, resulting in the identification of two compound (5i, 17) with sub-nanomolar binding affinity and one fluorine-bearing compound (10b) with picomolar binding affinity (20 pM), representing the highest binding affinity for GHS-R1a reported to date...
January 12, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29327138/handling-and-reporting-of-transperineal-template-prostate-biopsy-in-europe-a-web-based-survey-by-the-european-network-of-uropathology-enup
#9
Solene-Florence Kammerer-Jacquet, Eva Compérat, Lars Egevad, Ondra Hes, Jon Oxley, Murali Varma, Glen Kristiansen, Daniel M Berney
Transperineal template prostate biopsies (TTPB) are performed for assessments after unexpected negative transrectal ultrasound biopsies (TRUSB), correlation with imaging findings and during active surveillance. The impact of TTPBs on pathology has not been analysed. The European Network of Uropathology (ENUP) distributed a survey on TTPB, including how specimens were received, processed and analysed. Two hundred forty-four replies were received from 22 countries with TTPBs seen by 68.4% of the responders (n = 167)...
January 11, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29326358/targeted-alpha-therapy-of-mcrpc-with-225actinium-psma-617-swimmer-plot-analysis-suggests-efficacy-regarding-duration-of-tumor-control
#10
Clemens Kratochwil, Frank Bruchertseifer, Hendrik Rathke, Markus Hohenfellner, Frederik L Giesel, Uwe Haberkorn, Alfred Morgenstern
The aim of this evaluation is to identify first indicators regarding the efficacy of 225Ac-PSMA-617 therapy in a retrospectively analyzed group of patients. Methods: Forty patients with metastatic castration-resistant prostate cancer were selected for treatment with 3 cycles of 100 kBq/kgBW 225Ac-PSMA-617 in 2 months intervals. Prostate-specific antigen (PSA) and blood cell count were measured every 4 weeks. Prostate-specific membrane antigen (PSMA)-PET/CT or PSMA-SPECT/CT were used for baseline staging and imaging follow-up at month six...
January 11, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29325693/updates-in-the-eighth-edition-of-the-tumor-node-metastasis-staging-classification-for-urologic-cancers
#11
REVIEW
Gladell P Paner, Walter M Stadler, Donna E Hansel, Rodolfo Montironi, Daniel W Lin, Mahul B Amin
The Tumor-Node-Metastasis (TNM) classification on cancer staging, jointly developed by the American Joint Commission on Cancer (AJCC) and the Union for International Cancer Control (UICC), has been updated to its 8th edition with two contemporaneous versions published by the AJCC and UICC. While the goal of the AJCC and UICC is to have identical TNM staging systems, differences exist between these two publications including in the staging of urologic cancers. Among several new facets in the AJCC staging manual, a select few of greater import include an expanded section on imaging, presentation of levels of evidence for significant changes, and endorsement of risk assessment models that pass the AJCC quality criteria such as in prostate cancer...
January 8, 2018: European Urology
https://www.readbyqxmd.com/read/29325321/-preliminary-applicability-evaluation-of-prostate-imaging-reporting-and-data-system-version-2-diagnostic-score-in-3-0t-multi-parameters-magnetic-resonance-imaging-combined-with-prostate-specific-antigen-density-for-prostate-cancer
#12
M Z Zuo, W L Zhao, C G Wei, C Y Zhang, R Wen, Y F Gu, M J Li, Y Y Zhang, J F Wu, X Li, J K Shen
Objective: To investigate the preliminary applicability of Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) score in the condition of 3.0T multi-parametric magnetic resonance imaging (Mp-MRI) combined with clinical classic indicators for the diagnosis of prostate cancer (PCa). Methods: The clinical and MRI materials of 247 patients of suspicious prostate disease treated in Second Affiliated Hospital of Soochow University from June 2015 to November 2016 were analyzed retrospectively, including 110 cases with PCa and 137 cases without cancer...
December 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29324926/risk-stratification-and-staging-in-prostate-cancer-with-prostatic-specific-membrane-antigen-pet-ctobjective-a-one-stop-shop
#13
Manoj Gupta, Partha Sarathi Choudhury, Sudhir Rawal, Harish Chandra Goel, Amitabh Singh, Vineet Talwar, Saroj Kumar Sahoo
OBJECTIVE: Current imaging modalities for prostate cancer (PC) had limitations for risk stratification and staging. Magnetic resonance imaging (MRI) frequently underestimated lymphatic metastasis while bone scintigraphy often had diagnostic dilemmas. Prostatic specific membrane antigen (PSMA) positron emission tomography-computed tomography (PET/CT) has been remarkable in diagnosing PC recurrence and staging. We hypothesized it can become one-stop-shop for initial risk stratification and staging...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29323548/18f-fluorocholine-pet-whole-body-mri-in-the-staging-of-high-risk-prostate-cancer
#14
Ur Metser, Alejandro Berlin, Jaydeep Halankar, Grainne Murphy, Kartik S Jhaveri, Sangeet Ghai, Noam Tau
OBJECTIVE: The purpose of this study was to determine whether integrated 18F-fluorocholine (FCH) PET whole-body MRI (PET/WBMRI) depicts lymph node and distant metastases in patients with high-risk prostate cancer more frequently than does conventional staging. SUBJECTS AND METHODS: A prospective study included 58 patients with untreated high-risk prostate cancer. After conventional staging (CT and bone scintigraphy), patients underwent FCH PET/WBMRI (n = 10) or FCH PET/CT and WBMRI (n = 48)...
January 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29320570/image-guided-whole-pelvic-intensity-modulated-radiotherapy-for-biochemical-recurrence-following-radical-prostatectomy-in-high-risk-prostate-cancer-patients
#15
Sang Jun Byun, Young Seok Kim, Hanjong Ahn, Choung-Soo Kim
BACKGROUND: The optimal field size of salvage radiotherapy (SRT) for biochemical recurrence, particularly for patients with high-risk prostate cancer, remains undefined. This retrospective analysis was performed to investigate oncological outcomes as well as treatment-related toxicity following salvage intensity-modulated radiotherapy (IMRT) to the whole pelvis and to compare the results with other studies implementing a small field size of the prostate bed. METHODS: The medical records of 170 patients with high-risk prostate cancer who received SRT for biochemical recurrence following prostatectomy were reviewed...
2018: PloS One
https://www.readbyqxmd.com/read/29320333/prostate-specific-membrane-antigen-pet-clinical-utility-in-prostate-cancer-normal-patterns-pearls-and-pitfalls
#16
Michael S Hofman, Rodney J Hicks, Tobias Maurer, Matthias Eiber
Prostate-specific membrane antigen (PSMA) is a transmembrane glycoprotein that is overexpressed in prostate cancer. Radiolabeled small molecules that bind with high affinity to its active extracellular center have emerged as a potential new diagnostic standard of reference for prostate cancer, resulting in images with extraordinary tumor-to-background contrast. Currently, gallium 68 (68Ga)-PSMA-11 (or HBED-PSMA) is the most widely used radiotracer for PSMA positron emission tomography (PET)/computed tomography (CT) or PSMA PET/magnetic resonance (MR) imaging...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29318553/analyzing-the-type-ii-transmembrane-serine-protease-hepsin-dependent-basement-membrane-remodeling-in-3d-cell-culture
#17
Shishir M Pant, Denis Belitskin, Hanna Ala-Hongisto, Juha Klefström, Topi A Tervonen
Breakdown of the basement membrane is a key step that precedes tumor invasion, and accumulating evidence suggests a key role for the type II transmembrane proteases (TTSPs) in that process. Overexpression of a TTSP hepsin characterizes many solid cancers, including prostate, breast, and ovarian cancer, and in experimental tumor models, the elevated proteolytic activity of hepsin simultaneously activates several growth factors and cleaves basement membrane protein laminin-332, which is an essential component of the cell-basement membrane junction hemidesmosome...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29317377/multiparametric-mri-for-the-detection-of-local-recurrence-of-prostate-cancer-in-the-setting-of-biochemical-recurrence-after-low-dose-rate-brachytherapy
#18
Luca F Valle, Matthew D Greer, Joanna H Shih, Tristan Barrett, Yan Mee Law, Andrew B Rosenkrantz, Haytham Shebel, Akhil Muthigi, Daniel Su, Maria J Merino, Bradford J Wood, Peter A Pinto, Andra V Krauze, Aradhana Kaushal, Peter L Choyke, Barış Türkbey, Deborah E Citrin
PURPOSE: Prostate multiparametric magnetic resonance imaging (mpMRI) has utility in detecting post-radiotherapy local recurrence. We conducted a multireader study to evaluate the diagnostic performance of mpMRI for local recurrence after low dose rate (LDR) brachytherapy. METHODS: A total of 19 patients with biochemical recurrence after LDR brachytherapy underwent 3T endorectal coil mpMRI with T2-weighted imaging, dynamic contrast-enhanced imaging (DCE) and diffusion-weighted imaging (DWI) with pathologic confirmation...
January 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29315957/apparent-diffusion-coefficients-in-prostate-cancer-correlation-with-molecular-markers-ki-67-hif-1%C3%AE-and-vegf
#19
Teng Ma, Shaolin Yang, Haiyan Jing, Lin Cong, Zhixin Cao, Zhiling Liu, Zhaoqin Huang
Prostate cancer (PCa) is the second most common cancer in men. The Gleason score (GS) and biomarkers play important roles in the diagnosis and treatment of patients with PCa. The purpose of this study was to investigate the relationship between the apparent diffusion coefficient (ADC) and the molecular markers Ki-67, hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) in PCa. Thirty-nine patients with 39 lesions, who had been diagnosed with PCa, were enrolled in this study. All patients underwent diffusion-weighted magnetic resonance imaging (DW-MRI) (b = 800 s/mm2 )...
January 9, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29314538/the-new-frontier-of-prostate-biopsy-determining-the-role-of-image-guidance-in-moving-the-needle
#20
EDITORIAL
Sean A Fletcher, Sebastian Berg, Quoc-Dien Trinh
No abstract text is available yet for this article.
January 2018: BJU International
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