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https://www.readbyqxmd.com/read/28924476/clinical-validation-of-real-time-tissue-change-monitoring-during-prostate-tissue-ablation-with-high-intensity-focused-ultrasound
#1
Narendra T Sanghvi, Wo-Hsing Chen, Roy Carlson, Clint Weis, Ralf Seip, Toyoaki Uchida, Michael Marberger
BACKGROUND: The purpose of these clinical studies was to validate a Tissue Change Monitoring (TCM) algorithm in vivo. TCM is a quantitative tool for the real-time assessment of HIFU dose. TCM provides quantitative analysis of the backscatter pulse echo signals (pre and immediately post HIFU) for each individual ablative site, using ultrasonic tissue characterization as a surrogate for monitoring tissue temperature. Real-time analysis generates an energy difference parameter (ΔE in dB) that is proportional to tissue temperature...
2017: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/28921850/prospective-comparison-of-transperineal-mri-ultrasound-fusion-biopsy-and-transrectal-systematic-biopsy-in-biopsy-na%C3%A3-ve-patients
#2
Angelika Borkowetz, Boris Hadaschik, Ivan Platzek, Marieta Toma, Georgi Torsev, Theresa Renner, Roman Herout, Martin Baunacke, Michael Laniado, Gustavo Baretton, Jan Philipp Radtke, Claudia Kesch, Markus Hohenfellner, Michael Froehner, Heinz-Peter Schlemmer, Manfred Wirth, Stefan Zastrow
OBJECTIVES: To evaluate the value of multiparametric magnetic resonance imaging (mpMRI) for the detection of significant prostate cancer (PCa) and to compare transperineal MRI/ultrasound-fusion biopsy (fusPbx) to conventional transrectal systematic biopsy (sysPbx) in biopsy-naïve patients. PATIENTS AND METHODS: This multicentre, prospective trial investigated biopsy-naïve patients with suspicion of PCa undergoing transperineal fusPbx in combination with transrectal sysPbx (comPbx)...
September 16, 2017: BJU International
https://www.readbyqxmd.com/read/28867930/mr-safe-robot-fda-clearance-safety-and-feasibility-prostate-biopsy-clinical-trial
#3
Dan Stoianovici, Chunwoo Kim, Doru Petrisor, Changhan Jun, Sunghwan Lim, Mark W Ball, Ashley Ross, Katarzyna J Macura, Mohamad Allaf
Compatibility of mechatronic devices with the MR environment has been a very challenging engineering task. After over a decade of developments, we report the successful translation to clinical trials of our MR Safe robot technology. MrBot is a 6-degree-of-freedom, pneumatically actuated robot for transperineal prostate percutaneous access, built exclusively of electrically nonconductive and nonmagnetic materials. Its extensive pre-clinical tests have been previously reported. Here, we present the latest technology developments, an overview of the regulatory protocols, and technically related results of the clinical trial...
February 2017: IEEE/ASME Transactions on Mechatronics
https://www.readbyqxmd.com/read/28836176/elevated-hardness-of-peripheral-gland-on-real-time-elastography-is-an-independent-marker-for-high-risk-prostate-cancers
#4
Qi Zhang, Jing Yao, Yehua Cai, Limin Zhang, Yishuo Wu, Jingyu Xiong, Jun Shi, Yuanyuan Wang, Yi Wang
OBJECTIVES: To examine the role of quantitative real-time elastography (RTE) features on differentiation between high-risk prostate cancer (PCA) and non-high-risk prostatic diseases in the initial transperineal biopsy setting. METHODS: We retrospectively included 103 patients with suspicious PCA who underwent both RTE and initial transperineal prostate biopsy. Patients were grouped into high-risk and non-high-risk categories according to the D'Amico's risk stratification...
August 23, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28801025/toward-an-mri-based-nomogram-for-the-prediction-of-transperineal-prostate-biopsy-outcome-a-physician-and-patient-decision-tool
#5
Su-Min Lee, Sidath H Liyanage, Wahyu Wulaningsih, Konrad Wolfe, Thomas Carr, Choudhry Younis, Mieke Van Hemelrijck, Rick Popert, Peter Acher
PURPOSE: To develop and internally validate a nomogram using biparametric magnetic resonance imaging (B-MRI)-derived variables for the prediction of prostate cancer at transperineal sector-guided prostate biopsy (TPSB). SUBJECTS/PATIENTS AND METHODS: Consecutive patients referred to our institution with raised prostate-specific antigen (PSA), abnormal prostate examination, or persistent suspicion of prostate cancer after previous transrectal biopsy between July 2012 and November 2015 were reviewed from a prospective database...
August 8, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28783264/high-cancer-detection-rate-using-cognitive-fusion-targeted-transperineal-prostate-biopsies
#6
Snir Dekalo, Haim Matzkin, Nicola J Mabjeesh
OBJECTIVE: MRI of the prostate improves diagnostic accuracy of prostate cancer. Different fusion approaches with transrectal ultrasound images are employed. To determine detection rate of prostate cancer in men undergoing transperineal MRIbased cognitive fusion biopsy. MATERIALS AND METHODS: One hundred and sixty-four consecutive men underwent a multiple-core prostate transperineal biopsy. Univariable and multivariable logistic regression analyses were used to address the relationship between clinical parameters and prostate cancer detection rate...
July 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28771912/comparison-of-lesions-detected-and-undetected-by-template-guided-transperineal-saturation-prostate-biopsy
#7
Zhipeng Mai, Yu Xiao, Weigang Yan, Yi Zhou, Zhien Zhou, Zhiyong Liang, Zhigang Ji, Hanzhong Li
OBJECTIVES: To compare the characteristics of lesions detected or undetected by template-guided transperineal saturation prostate biopsy and to evaluate the potential impact of undetected lesions. MATERIALS AND METHODS: We evaluated the characteristics of lesions in radical prostatectomy (RP) specimens, compared the differences between lesions detected and undetected by systematic transperineal ultrasonography-guided 11-region biopsy with regard to tumour volume, Gleason score, surgical margin, spatial location and clinical significance, and assessed the potential impact of undetected clinically significant lesions...
August 3, 2017: BJU International
https://www.readbyqxmd.com/read/28768264/pathological-concordance-between-prostate-biopsies-and-radical-prostatectomy-using-transperineal-sector-mapping-biopsies-validation-and-comparison-with-transrectal-biopsies
#8
Giancarlo Marra, David Eldred-Evans, Ben Challacombe, Mieke Van Hemelrijck, Alexander Polson, Sabine Pomplun, Christopher S Foster, Christian Brown, Declan Cahill, Paolo Gontero, Rick Popert, Gordon Muir
Background/Aims/Objectives: Our aim was to evaluate the accuracy of systematic transperineal sector mapping biopsy (TPSMB) in predicting Gleason score (GS) at radical prostatectomy (RP), to compare its accuracy with standard transrectal ultrasound-guided biopsies (TRUS) and to establish the clinical impact of discordance between biopsies and RP on subsequent surgical management. METHODS: Two hundred fifty-five patients from 2008 to 2013 who underwent RP following TPSMB (n = 204) or TRUS (n = 51), were included in this retrospective multi-institutional study...
2017: Urologia Internationalis
https://www.readbyqxmd.com/read/28749035/comparison-between-target-magnetic-resonance-imaging-mri-in-gantry-and-cognitively-directed-transperineal-or-transrectal-guided-prostate-biopsies-for-prostate-imaging-reporting-and-data-system-pi-rads-3-5-mri-lesions
#9
Anna J Yaxley, John W Yaxley, Isaac A Thangasamy, Emma Ballard, Morgan R Pokorny
OBJECTIVE: To compare the detection rates of prostate cancer (PCa) in men with Prostate Imaging-Reporting and Data System (PI-RADS) 3-5 abnormalities on 3-Tesla multiparametric (mp) magnetic resonance imaging (MRI) using in-bore MRI-guided biopsy compared with cognitively directed transperineal (cTP) biopsy and transrectal ultrasonography (cTRUS) biopsy. METHODS: This was a retrospective single-centre study of consecutive men attending the private practice clinic of an experienced urologist performing MRI-guided biopsy and an experienced urologist performing cTP and cTRUS biopsy techniques for PI-RADS 3-5 lesions identified on 3-Tesla mpMRI...
July 27, 2017: BJU International
https://www.readbyqxmd.com/read/28739430/evaluation-of-mr-imaging-targeted-biopsies-of-the-prostate-in-biopsy-na%C3%A3-ve-patients-a-single-centre-study
#10
J Garcia Bennett, J C Vilanova, J Gumà Padró, D Parada, A Conejero
PURPOSE: To evaluate the differences in prostate cancer detection rate and biopsy effectiveness between magnetic resonance imaging (MRI) target biopsy (TB) and transperineal standard biopsy (SB) in biopsy-naïve patients. MATERIAL AND METHODS: Between October 2014 and April 2016, 60 men with a mean age of 64.1±6.7 (SD) years (range: 53-82 years) were prospectively enrolled. All patients underwent a prostate MRI study, evaluated by two radiologists, before undergoing the biopsy...
July 21, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28736429/ultrasound-guided-genitourinary-interventions-principles-and-techniques
#11
Byung Kwan Park
Ultrasound (US) is often used to guide various interventional procedures in the genitourinary Epub ahead of print (GU) tract because it can provide real-time imaging without any radiation hazard. Moreover, US can clearly visualize the pathway of an aspiration or biopsy needle to ensure the safety of the intervention. US guidance also helps clinicians to access lesions via the transabdominal, transhepatic, transvaginal, transrectal, and transperineal routes. Hence, US-guided procedures are useful for radiologists who wish to perform GU interventions...
May 29, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28735018/safety-and-feasibility-of-direct-mri-guided-transperineal-prostate-biopsy-using-a-novel-mri-safe-robotic-device
#12
Mark W Ball, Ashley E Ross, Kamyar Ghabili, Chunwoo Kim, Changhan Jun, Doru Petrisor, Li Pan, Jonathan I Epstein, Katarzyna J Macura, Dan S Stoianovici, Mohamad E Allaf
OBJECTIVE: To evaluate safety and feasibility in a first in human trial of direct MRI-guided prostate biopsy using a novel robotic device. METHODS: MrBot is an MRI-safe robotic device constructed entirely of nonconductive, nonmetallic, and nonmagnetic materials, developed by our group. A safety and feasibility clinical trial was designed to assess the safety and feasibility of direct MRI-guided biopsy with MrBot and determine its targeting accuracy. Men with elevated PSA, prior negative prostate biopsy and cancer suspicious region (CSR) on MRI were enrolled in the study...
July 19, 2017: Urology
https://www.readbyqxmd.com/read/28727544/abbreviated-biparametric-prostate-mr-imaging-in-men-with-elevated-prostate-specific-antigen
#13
Christiane K Kuhl, Robin Bruhn, Nils Krämer, Sven Nebelung, Axel Heidenreich, Simone Schrading
Purpose To determine the diagnostic accuracy for clinically significant prostate cancer achieved with abbreviated biparametric prostate magnetic resonance (MR) imaging in comparison with full multiparametric contrast material-enhanced prostate MR imaging in men with elevated prostate-specific antigen (PSA) and negative transrectal ultrasonography (US)-guided biopsy findings; to determine the significant cancer detection rate of biparametric versus full multiparametric contrast-enhanced MR imaging and between-reader agreement for interpretation of biparametric MR imaging...
July 20, 2017: Radiology
https://www.readbyqxmd.com/read/28725578/transperineal-vs-transrectal-biopsy-in-mri-targeting
#14
REVIEW
Jeremy Grummet, Lana Pepdjonovic, Sean Huang, Elliot Anderson, Boris Hadaschik
Prostate biopsy is typically performed via either the transrectal or transperineal approach. MRI-targeted biopsy, whether using any of the three options of cognitive fusion, MRI-ultrasound fusion software, or in-bore MRI-guided biopsy, can also be performed via either transrectal or transperineal approaches. As an extension of traditional random prostate biopsy, the transrectal approach is far more commonly used for MRI-targeted biopsy due to its convenience. However, in the context of today's increasing multi-drug resistance of rectal flora, the transperineal approach is being used more often due to its lack of septic complications...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28679384/transperineal-ultrasound-guided-prostate-biopsy-is-safe-even-when-patients-are-on-combination-antiplatelet-and-or-anticoagulation-therapy
#15
Kimitoshi Saito, Satoshi Washino, Yuhki Nakamura, Tsuzumi Konishi, Masashi Ohshima, Yoshiaki Arai, Tomoaki Miyagawa
BACKGROUND: To assess whether hemorrhagic complications associated with transperineal prostate biopsy increased in patients on antiplatelet and/or anticoagulant therapy. METHODS: In total, 598 consecutive patients underwent transperineal prostate biopsy. The medication group comprised patients who took anti-thromboembolic agents, and the control group comprised those who did not take these agents. No anti-thromboembolic agent was stopped before, during, or after prostate biopsy in the medication group...
July 5, 2017: BMC Urology
https://www.readbyqxmd.com/read/28679370/assessment-of-free-hand-transperineal-targeted-prostate-biopsy-using-multiparametric-magnetic-resonance-imaging-transrectal-ultrasound-fusion-in-chinese-men-with-prior-negative-biopsy-and-elevated-prostate-specific-antigen
#16
Huibo Lian, Junlong Zhuang, Wei Wang, Bing Zhang, Jiong Shi, Danyan Li, Yao Fu, Xuping Jiang, Weimin Zhou, Hongqian Guo
BACKGROUND: To evaluate the role of free-hand transperineal targeted prostate biopsy using multiparametric magnetic resonance imaging-transrectal ultrasound (mpMRI-TRUS) fusion in Chinese men with repeated biopsy. METHODS: A total of 101 consecutive patients suspicious of prostate cancer (PCa) at the mpMRI scan and with prior negative biopsy and elevated PSA values were prospectively recruited at two urological centers. Suspicious areas on mpMRI were defined and graded using PI-RADS score...
July 5, 2017: BMC Urology
https://www.readbyqxmd.com/read/28679191/a-rare-case-of-male-pelvic-squamous-cell-carcinoma-of-unknown-primary-origin-presenting-as-perineal-abscess-and-urethral-stenosis
#17
Massimiliano Creta, Vincenzo Mirone, Sergio Di Meo, Roberto Buonopane, Nicola Longo, Ferdinando Fusco, Nicola Rosario Forte, Vittorio Imperatore
Carcinomas of unknown primary origin (CUP) represent a diagnostic and therapeutic challenge. Squamous cell CUP located in the male pelvis are very rare. We describe a case of a locally advanced squamous cell CUP occurring in the male pelvis presenting as perineal abscess and urethral stenosis and diagnosed by means of transperineal needle biopsy.
June 30, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28654336/focal-therapy-for-prostate-cancer-with-in-bore-mr-guided-focused-ultrasound-two-year-follow-up-of-a-phase-i-trial-complications-and-functional-outcomes
#18
Kae Jack Tay, Christopher W S Cheng, Weber K O Lau, James Khoo, Choon Hua Thng, Jin Wei Kwek
Purpose To report the safety profile and 2-year functional outcomes of in-bore magnetic resonance (MR)-guided focused ultrasound on single cancer foci in men with prostate cancer. Materials and Methods Ethics approval was obtained from the centralized institutional review board for this prospective single-arm study, and patients provided informed consent. Patients with untreated low-volume low-grade prostate cancer (clinical stage T2a or lower; Gleason score, 3+3; index tumor ≤10 mm(3)) underwent MR-guided focused ultrasound between July 2011 and February 2013...
June 26, 2017: Radiology
https://www.readbyqxmd.com/read/28630778/female-urethral-diverticulum-carcinoma-a-case-report-and-literature-review
#19
Ryo Kasahara, Tadashi Tabei, Yukio Tsuura, Kazuki Kobayashi
A 48-year-old woman with a history of voiding difficulty visited our hospital. Magnetic resonance imaging revealed a periurethral tumor, which was pathologically diagnosed as an adenocarcinoma via transperineal needle biopsy. Radical cystectomy and urethrectomy were performed, and the urinary tract was reconstructed using an ileal conduit. Pathological examination of a resected specimen confirmed adenocarcinoma of the urethral diverticulum. The patient received adjuvant gemcitabine and cisplatin chemotherapy...
2017: Case Reports in Urology
https://www.readbyqxmd.com/read/28621672/the-predictive-efficacy-of-hypoechoic-lesion-in-ultrasound-for-prostate-cancer-in-chinese-people-five-year-experience-in-a-moderated-10-core-transperineal-prostate-biopsy-procedure
#20
Yang Tian, Zhang Limin, Chen Yixin, Cai Yehua, Jiang Haowen, Ding Qiang
We aim to investigate the predictive efficacy of hypoechoic lesion for prostate cancer at different levels of serum PSA in the procedure of transrectal ultrasound guided 10-core trans-perineal prostate biopsy (TP-PBx). In this study, we collected clinical parameters involving age, digital rectal examination (DRE), PSA, prostate volume, pathological diagnosis, Gleason score, novel Gleason group, and numbers of positive cores from 856 patients who had elevated level of PSA above 4 ng/ml or susceptible nodule of prostate gland in DRE received the moderated 10-core TP-PBx procedure...
June 2, 2017: Oncotarget
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