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https://www.readbyqxmd.com/read/29122620/three-year-outcomes-of-the-prospective-randomized-controlled-rez%C3%A5-m-system-study-convective-radiofrequency-thermal-therapy-for-treatment-of-lower-urinary-tract-symptoms-due-to-benign-prostatic-hyperplasia
#1
Kevin T McVary, Claus G Roehrborn
OBJECTIVE: To report 3-year outcomes of a prospective, multi-center, randomized, blinded control trial after treatment with convective radiofrequency (RF) water vapor thermal therapy for moderate to severe lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH). MATERIALS AND METHODS: Fifteen centers enrolled and randomized 197 men ≥50 years old with International Prostate Symptom Score (IPSS) ≥13, maximum flow rate (Qmax) ≤15 ml/s and prostate volume 30 to 80 cc to thermal therapy with Rezūm® System or control (2:1)...
November 6, 2017: Urology
https://www.readbyqxmd.com/read/29107274/focal-ablation-of-early-stage-prostate-cancer-candidate-selection-treatment-guidance-and-assessment-of-outcome
#2
REVIEW
Eric Edison, Taimur Tariq Shah, Hashim U Ahmed
Prostate cancer lesions smaller than 0.5 m(3), or Gleason pattern 3, are likely clinically insignificant. Clinically significant disease is often limited to a single index lesion. Focal ablation targets this index lesion, maintains oncological control, and minimizes complications by preserving healthy prostate tissue. Template mapping biopsy or multiparametric MRI-targeted biopsies are used to identify appropriate index lesions. Multiple energy modalities have been tested, including high-intensity frequency ultrasound, cryoablation, laser ablation, photodynamic therapy, focal brachytherapy, radiofrequency ablation, irreversible electroporation...
November 2017: Urologic Clinics of North America
https://www.readbyqxmd.com/read/29100167/early-identification-and-intervention-matters-a-comprehensive-review-of-current-evidence-and-recommendations-for-the-monitoring-of-bone-health-in-patients-with-cancer
#3
REVIEW
Thomas Brodowicz, Peyman Hadji, Daniela Niepel, Ingo Diel
Bone metastases are common in patients with advanced solid tumors, and many individuals experience debilitating skeletal-related events (SREs; e.g. pathologic fracture, hypercalcemia, radiotherapy or surgery to bone, and spinal cord compression). These events substantially affect disease outcomes, including survival and quality of life, and healthcare systems. Plain radiography is the most widely used imaging modality for the detection of bone metastases; skeletal scintigraphy, computed tomography, positron emission tomography and magnetic resonance imaging offer greater sensitivity but their use in routine practice is restricted by high costs and limited availability...
October 18, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28861405/procedural-techniques-and-multicenter-postmarket-experience-using-minimally-invasive-convective-radiofrequency-thermal-therapy-with-rez%C3%A5-m-system-for-treatment-of-lower-urinary-tract-symptoms-due-to-benign-prostatic-hyperplasia
#4
Micheal F Darson, Erik E Alexander, Zvi J Schiffman, Michael Lewitton, Robert A Light, Mark A Sutton, Carlos Delgado-Rodriguez, Ricardo R Gonzalez
OBJECTIVE: This report evaluates clinical experience with the Rezūm system after US Food and Drug Administration clearance in consecutive cases accrued by multiple community urologists for the treatment of lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH). Treatment techniques for transurethral convective radiofrequency water-vapor thermal therapy and outcomes with up to 12 months' follow-up are presented. MATERIALS AND METHODS: A total of 131 patients with moderate-severe LUTS were included in a retrospective analysis of BPH procedures with the Rezūm system...
2017: Research and Reports in Urology
https://www.readbyqxmd.com/read/28806322/reduced-field-of-view-diffusion-weighted-magnetic-resonance-imaging-of-the-prostate-at-3-tesla-comparison-with-standard-echo-planar-imaging-technique-for-image-quality-and-tumor-assessment
#5
Tsutomu Tamada, Justin M Ream, Ankur M Doshi, Samir S Taneja, Andrew B Rosenkrantz
OBJECTIVE: The purpose of this study was to compare image quality and tumor assessment at prostate magnetic resonance imaging (MRI) between reduced field-of-view diffusion-weighted imaging (rFOV-DWI) and standard DWI (st-DWI). METHODS: A total of 49 patients undergoing prostate MRI and MRI/ultrasound fusion-targeted biopsy were included. Examinations included st-DWI (field of view [FOV], 200 × 200 mm) and rFOV-DWI (FOV, 140 × 64 mm) using a 2-dimensional (2D) spatially-selective radiofrequency pulse and parallel transmission...
November 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28780635/convective-radiofrequency-water-vapor-thermal-therapy-with-rez%C3%A5-m-system
#6
REVIEW
Sevann Helo, Bradley Holland, Kevin T McVary
PURPOSE: Lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) are amongst the most commonly treated conditions by urologists. Minimally invasive therapies for the treatment of BPH/LUTS have garnered increased interest as new technology has emerged, improving durability, efficacy, and safety. This paper reviews the most recent literature regarding water vapor therapy, a convective thermal therapy that ablates prostatic tissue. RECENT FINDINGS: The current literature includes a pilot study of 65 men and a randomized controlled trial (RCT) of 197 men investigating the efficacy and safety profile of water vapor therapy up to 2 years...
October 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28735201/ultrasound-elastography-of-the-prostate-using-an-unconstrained-modulus-reconstruction-technique-a-pilot-clinical-study
#7
REVIEW
Seyed Reza Mousavi, Hassan Rivaz, Gregory J Czarnota, Abbas Samani, Ali Sadeghi-Naini
A novel full-inversion-based technique for quantitative ultrasound elastography was investigated in a pilot clinical study on five patients for non-invasive detection and localization of prostate cancer and quantification of its extent. Conventional-frequency ultrasound images and radiofrequency (RF) data (~5 MHz) were collected during mechanical stimulation of the prostate using a transrectal ultrasound probe. Pre and post-compression RF data were used to construct the strain images. The Young's modulus (YM) images were subsequently reconstructed using the derived strain images and the stress distribution estimated iteratively using finite element (FE) analysis...
October 2017: Translational Oncology
https://www.readbyqxmd.com/read/28588677/comparative-study-of-conventional-us-contrast-enhanced-us-and-enhanced-mr-for-the-follow-up-of-prostatic-radiofrequency-ablation
#8
Chao Feng, Bin Hu, Bing Hu, Lei Chen, Jia Li, Jin Huang
The aim of the present study was to evaluate and compare the effectiveness of different imaging methods during follow-up of prostatic radiofrequency ablation. Prostatic radiofrequency ablation (RFA) was performed in 20 healthy beagle dogs. Various imaging examinations were used to monitor the results of RFA, including conventional ultrasound (US), contrast enhanced ultrasound (CEUS) and enhanced magnetic resonance (MR). Imaging exams were performed at five phases: Immediately following RFA, one week later, one month later, three months later and six months later...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28580312/the-role-of-radiofrequency-hyperthermia-in-the-radiosensitization-of-a-human-prostate-cancer-cell-line
#9
Azam Janati Esfahani, Seied Rabi Mahdavi, Mohammad Bagher Shiran, Samideh Khoei
OBJECTIVE: This study evaluated enhanced induced DNA damages and apoptosis of a spheroid culture of DU145 prostate cancer cells treated by a combination of radiofrequency hyperthermia (RF HT) with radiation treatment (RT) from an external radiotherapy machine compared to RT alone. MATERIALS AND METHODS: In this experimental study, DU145 cells were cultured as spheroids until they reached 300 µm in diameter. We exposed these cultures to either: RF HT for 90 minutes at 43˚C originated from a Celsius TCS system, RF HT followed by RT at doses of 2 Gy or 4 Gy (15 MV energy) with 15-minute interval, or RT alone at the above mentioned doses...
2017: Cell Journal
https://www.readbyqxmd.com/read/28580311/enhanced-dna-damages-of-human-prostate-cancer-cells-induced-by-radiofrequency-capacitive-hyperthermia-pre-and-post-x-rays-6-mv-versus-15-mv
#10
Seied Rabi Mahdavi, Azam Janati Esfahani, Mohammad Bagher Shiran, Samideh Khoei, Nader Estiri
OBJECTIVE: This study aimed to determine the effect of 13.56 MHz radiofrequency (RF) capacitive hyperthermia (HT) on radiosensivity of human prostate cancer cells pre and post X-ray radiation treatment (RT). MATERIALS AND METHODS: In this experimental study, the human prostate cancer cell line DU145 was cultured as 300 µm diameter spheroids. We divided the spheroids into group I: control, group II: HT at 43˚C for 30 minutes (HT), group III: 4 Gy irradiation with 6 MV X-ray [RT (6 MV)], group IV: 4 Gy irradiation with 15 MV X-ray [RT (15 MV)], group V: HT+RT (6 MV), group VI: HT+RT (15 MV), group VII: RT (6 MV)+HT, and group VIII: RT (15 MV)+HT...
2017: Cell Journal
https://www.readbyqxmd.com/read/28490907/perspective-on-the-rez%C3%A5-m-%C3%A2-system-a-minimally-invasive-treatment-strategy-for-benign-prostatic-hyperplasia-using-convective-radiofrequency-water-vapor-thermal-therapy
#11
Henry H Woo, Ricardo R Gonzalez
Convective radiofrequency (RF) water vapor thermal therapy is a minimally invasive office or outpatient procedure for the treatment of bothersome moderate-to-severe lower urinary tract symptoms associated with benign prostatic hyperplasia (BPH). It provides an option for patients seeking rapid and durable relief of urinary symptoms, improved quality of life, and preservation of sexual function as an alternative to long-term use of drugs and avoidance of the potential side effects of pharmaceuticals or invasive BPH surgery...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28434661/retrospective-review-of-percutaneous-image-guided-ablation-of-oligometastatic-prostate-cancer-a-single-institution-experience
#12
Andrew J Erie, Jonathan M Morris, Brian T Welch, A Nicholas Kurup, Adam J Weisbrod, Thomas D Atwell, Grant D Schmit, Eugene D Kwon, Matthew R Callstrom
PURPOSE: To retrospectively review and report the efficacy and safety of percutaneous image-guided ablation (cryoablation or radiofrequency ablation) in the treatment of oligometastatic prostate cancer. MATERIALS AND METHODS: An institutional registry was retrospectively reviewed and revealed 16 patients with oligometastatic prostate cancer (median age, 67 y; range, 50-86 y) who underwent percutaneous image-guided ablation to treat 18 metastatic sites. A subgroup of 7 patients with 8 metastases were androgen-deprivation therapy (ADT)-naïve and underwent ablation to delay initiation of ADT...
April 20, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28378237/successful-ablation-of-lymph-nodes-using-irreversible-electroporation-ire-in-a-porcine-survival-model
#13
Stefan Fritz, Christof M Sommer, Thomas Longerich, Clemens Kuhn-Neureuther, Boris Radeleff, Jens Werner, Thilo Hackert
BACKGROUND: Irreversible electroporation (IRE), a nonthermal injury ablation technique, has been shown to be effective and safe in various organs, such as in the kidney, liver, prostate, or in pancreas. In contrast to radiofrequency or microwave ablation, IRE is also effective in the neighborhood of major vessels. Many human cancers reveal lymphatic spread. The present study aimed to evaluate technical feasibility and safety of IRE in lymphatic tissue. To our knowledge, this is the first report showing successful IRE of lymph nodes in a standardized porcine survival model...
May 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28349507/transfer-learning-from-rf-to-b-mode-temporal-enhanced-ultrasound-features-for-prostate-cancer-detection
#14
Shekoofeh Azizi, Parvin Mousavi, Pingkun Yan, Amir Tahmasebi, Jin Tae Kwak, Sheng Xu, Baris Turkbey, Peter Choyke, Peter Pinto, Bradford Wood, Purang Abolmaesumi
PURPOSE: We present a method for prostate cancer (PCa) detection using temporal enhanced ultrasound (TeUS) data obtained either from radiofrequency (RF) ultrasound signals or B-mode images. METHODS: For the first time, we demonstrate that by applying domain adaptation and transfer learning methods, a tissue classification model trained on TeUS RF data (source domain) can be deployed for classification using TeUS B-mode data alone (target domain), where both data are obtained on the same ultrasound scanner...
July 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28324777/a-feasibility-study-of-a-novel-spectral-method-using-radiofrequency-ultrasound-data-for-monitoring-laser-tissue-ablation
#15
Enrico Vannacci, Simona Granchi, Luca Breschi, Elena Biagi
This paper presents preliminary results of a new non-invasive ultrasound monitoring method called TUV (Thermotherapy Ultrasonic View) able to investigate structural tissue modifications caused by minimally invasive percutaneous laser ablation. The method, based on the spectral analysis of the raw ultrasound radiofrequency signal, develops spectral parameters in a multidimensional space and its N dimensions are represented by the central frequencies of the sub bands the signal spectrum is decomposed into. Signal processing has been performed on the data related to 7 laser treatments performed on 4 samples of removed prostatic glands which underwent laser ablation at power of 3W, 4W and 5W and energy of 1800J...
July 2017: Ultrasonics
https://www.readbyqxmd.com/read/28112824/in-vivo-imaging-of-electrical-properties-of-an-animal-tumor-model-with-an-8-channel-transceiver-array-at-7%C3%A2-t-using-electrical-properties-tomography
#16
Jiaen Liu, Qi Shao, Yicun Wang, Gregor Adriany, John Bischof, Pierre-Francois Van de Moortele, Bin He
PURPOSE: To develop and evaluate a technique for imaging electrical properties ((EPs), conductivity and permittivity) of an animal tumor model in vivo using MRI. METHODS: Electrical properties were reconstructed from the calculated EP gradient, which was derived using two sets of measured transmit B1 magnitude and relative phase maps with the sample and radiofrequency (RF) coil oriented in the positive and negative z-directions, respectively. An eight-channel transceiver microstrip array RF coil fitting the size of the animal was developed for generating and mapping B1 fields to reconstruct EPs...
December 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28046589/tu-h-campus-iep3-04-evaluation-of-changes-in-quantitative-ultrasound-parameters-during-prostate-radiotherapy
#17
M Najafi, A El Kaffas, B Han, D Cooper, S Hancock, D Hristov
PURPOSE: Clarity Autoscan ultrasound monitoring system allows acquisition of raw radiofrequency (RF) ultrasound data prior and during radiotherapy. This enables the computation of 3D Quantitative Ultrasound (QUS) tissue parametric maps from. We aim to evaluate whether QUS parameters undergo changes with radiotherapy and thus potentially be used as early predictors and/or markers of treatment response in prostate cancer patients. METHODS: In-vivo evaluation was performed under IRB protocol to allow data collection in prostate patients treated with VMAT whereby prostate was imaged through the acoustic window of the perineum...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28002239/feasibility-of-multiparametric-magnetic-resonance-imaging-of-the-prostate-at-7-t
#18
Miriam W Lagemaat, Bart W J Philips, Eline K Vos, Mark J van Uden, Jurgen J Fütterer, Sjoerd F Jenniskens, Tom W J Scheenen, Marnix C Maas
OBJECTIVES: The aim of this study was to evaluate the technical feasibility of prostate multiparametric magnetic resonance imaging (mpMRI) at a magnetic field strength of 7 T. MATERIALS AND METHODS: In this prospective institutional review board-approved study, 14 patients with biopsy-proven prostate cancer (mean age, 65.2 years; median prostate-specific antigen [PSA], 6.2 ng/mL), all providing signed informed consent, underwent 7 T mpMRI with an external 8-channel body-array transmit coil and an endorectal receive coil between September 2013 and October 2014...
May 2017: Investigative Radiology
https://www.readbyqxmd.com/read/27993667/convective-thermal-therapy-durable-2-year-results-of-randomized-controlled-and-prospective-crossover-studies-for-treatment-of-lower-urinary-tract-symptoms-due-to-benign-prostatic-hyperplasia
#19
Claus G Roehrborn, Steven N Gange, Marc C Gittelman, Kenneth A Goldberg, Kalpesh Patel, Neal D Shore, Richard M Levin, Michael Rousseau, J Randolf Beahrs, Jed Kaminetsky, Barrett E Cowan, Christopher H Cantrill, Lance A Mynderse, James C Ulchaker, Thayne R Larson, Christopher M Dixon, Kevin T McVary
PURPOSE: We report 2-year outcomes of a multicenter randomized controlled trial plus 1-year results of a crossover trial after treatment with convective radiofrequency water vapor thermal energy for lower urinary tract symptoms due to benign prostatic hyperplasia. MATERIALS AND METHODS: A total of 197 men at least 50 years old with I-PSS (International Prostate Symptom Score) 13 or greater, maximum flow rate 15 ml per second or less and prostate size 30 to 80 cc were randomized 2:1 to thermal therapy with the Rezūm® System or a control group...
June 2017: Journal of Urology
https://www.readbyqxmd.com/read/27921028/two-year-results-after-convective-radiofrequency-water-vapor-thermal-therapy-of-symptomatic-benign-prostatic-hyperplasia
#20
Christopher M Dixon, Edwin Rijo Cedano, Dalibor Pacik, Vítězslav Vit, Gabriel Varga, Lennart Wagrell, Thayne R Larson, Lance A Mynderse
OBJECTIVE: The objective of this study was to assess the effectiveness and safety of convective radiofrequency (RF) water vapor thermal therapy in men with lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH); a pilot study design with 2-year follow-up evaluations. PATIENTS AND METHODS: Men aged ≥45 years with an International Prostate Symptom Score ≥13, a maximum urinary flow rate (Qmax) ≤15 mL/s, and prostate volume 20-120 cc were enrolled in a prospective, open-label pilot study using convective RF water vapor energy with the Rezūm System...
2016: Research and Reports in Urology
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