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https://www.readbyqxmd.com/read/29223469/oncological-and-functional-outcomes-of-elderly-men-treated-with-hifu-vs-minimally-invasive-radical-prostatectomy-a-propensity-score-analysis
#1
Paolo Capogrosso, Eric Barret, Rafael Sanchez-Salas, Igor Nunes-Silva, François Rozet, Marc Galiano, Eugenio Ventimiglia, Alberto Briganti, Andrea Salonia, Francesco Montorsi, Xavier Cathelineau
AIM: To assess outcomes of whole gland high-intensity focused ultrasound (HIFU) as compared with minimally-invasive radical prostatectomy (MIRP) in elderly patients. MATERIALS & METHODS: Patients aged ≥70 years with, cT1-cT2 disease, biopsy Gleason score (GS) 3 + 3 or 3 + 4 and preoperative PSA ≤10 ng/mL were submitted to either whole-gland HIFU or MIRP. Propensity-score matching analysis was performed to ensure the baseline equivalence of groups. Follow-up visits were routinely performed assessing PSA and urinary function according to the International Continence Score (ICS) and the International Prostatic Symptoms Score (IPSS) questionnaires...
December 1, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29215838/-effekt-of-blood-flow-shutdown-on-the-vein-damage-when-exposed-to-hifu
#2
N N Petrishchev, D U Semenov, A U Tsibin, G U Yukina, A E Berkovich, A A Bursian, A B Belyankin, K U Senchik
The purpose. In the study we investigated the impact of the partial blood flow shutdown on structural changes in the rabbit vena cava posterior wall after exposure to high-intensity focused ultrasound (HIFU). Methods. Ultrasound Exposure: frequency of 1.65 MHz, the ultrasound intensity in the focus of 13.6 kW/cm2, the area of the focal spot 1 mm2, continuous ultrasound, exposure for 3 seconds. Results. Immediately after HIFU exposure all layers of the vein wall showed characteristic signs of thermal damage...
April 2017: Patologicheskaia Fiziologiia i èksperimental'naia Terapiia
https://www.readbyqxmd.com/read/29211405/high-intensity-focused-ultrasound-hifu-as-salvage-therapy-for-radio-recurrent-prostate-cancer-predictors-of-disease-response
#3
Shawn Dason, Nathan C Wong, Christopher B Allard, Jen Hoogenes, William Orovan, Bobby Shayegan
BACKGROUND: Some men with localized radio-recurrent prostate cancer may benefit from salvage high-intensity focused ultrasound (HIFU). Herein, we describe oncologic outcomes and predictors of disease response after salvage whole gland HIFU from our prospective cohort. MATERIALS AND METHODS: Patients with localized radio-recurrent prostate cancer were prospectively enrolled from January 2005 to December 2014. Participants had to meet both biochemical and histological definitions of recurrence...
December 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29207852/the-efficacy-and-safety-of-high-intensity-focused-ultrasound-ablation-of-benign-thyroid-nodules
#4
Brian H Lang, Arnold L H Wu
High-intensity focused ultrasound (HIFU) is a promising form of thermal ablation of benign thyroid nodules, but evidence supporting its use is scarce. The present review evaluated the efficacy and safety of single-session HIFU treatment of benign thyroid nodules. As reported in the literature, the extent of nodule shrinkage following treatment ranged from 48.8% to 68.8%. Like other forms of ablation, the shrinkage rate was greatest in the first 3-6 months, and the best responders were patients with small (≤10 mL) nodules...
October 10, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29205814/immediate-effect-and-safety-of-hifu-single-treatment-for-male-subcutaneous-fat-reduction
#5
Fernanda Guth, Shanna Bitencourt, Cícero Bedinot, Giovana Sinigaglia, João Alberto Fioravante Tassinary
BACKGROUND: The increasing search for procedures for fat reduction is related to dissatisfaction with body shape. High-intensity focused ultrasound (HIFU) has been proven effective in body sculpting when used noninvasively to reduce subcutaneous fat and improve body contour. AIMS: This study aimed to evaluate the immediate effect and safety of HIFU single treatment for male localized fat and body remodeling. PATIENTS/METHODS: Twenty-four male subjects (18 to 59 years old) with BMI ≤ 30 kg/cm² and at least 2 cm of abdominal fat received a single HIFU treatment session...
December 4, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29205014/high-intensity-focused-ultrasound-hifu-in-tumor-therapy
#6
Roberto Blanco Sequeiros, Kirsi Joronen, Gaber Komar, Seppo K Koskinen
HIFU (high intensity focused ultrasound) is a method in which high-frequency ultrasound is focused on a tissue in order to achieve a thermal effect and the subsequent percutaneously ablation, or tissue modulation. HIFU is non-invasive and results in an immediate tissue destruction effect corresponding to surgery, either percutaneously or through body cavities. HIFU can be utilized in the treatment of both benign and malignant tumors. In neurological diseases, focused HIFU can be used in the treatment of disorders of the basal ganglia...
2017: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/29204677/the-predictive-value-of-quantitative-dce-metrics-for-immediate-therapeutic-response-of-high-intensity-focused-ultrasound-ablation-hifu-of-symptomatic-uterine-fibroids
#7
Chao Wei, Xin Fang, Chuan-Bin Wang, Yu Chen, Xiao Xu, Jiang-Ning Dong
PURPOSE: The aim of this study was to investigate the value of quantitative DCE-MRI parameters for predicting the immediate non-perfused volume ratio (NPVR) of HIFU therapy in the treatment of symptomatic uterine fibroids. MATERIALS AND METHODS: A total of 78 symptomatic uterine fibroids in 65 female patients were treated with US-HIFU therapy. All patients underwent conventional MRI and DCE-MRI scans 1 day before and 3 days after HIFU treatment. Permeability parameters K trans, K ep, V e, and V p and T1 perfusion parameters BF and BV of pretreatment were measured as a baseline, while NPVR was used to assess immediate ablation efficiency...
December 4, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29195755/determination-of-acoustic-cavitation-probabilities-and-thresholds-using-a-single-focusing-transducer-to-induce-and-detect-acoustic-cavitation-events-ii-systematic-investigation-in-an-agar-material
#8
Julian Haller, Volker Wilkens
In the accompanying article (Part I), a method is described to determine acoustic cavitation probabilities in tissue-mimicking materials (TMMs) using a high-intensity focused ultrasound (HIFU) transducer for both inducing and detecting the acoustic cavitation events, and its suitability for different sonication modes like continuous wave, single pulses (with pulse lengths from microseconds to milliseconds) and repeated burst signals is discussed. In Part II, the use of the method for a systematic study of the dependence of the acoustic cavitation thresholds in 3% (by weight) agar phantoms on the temporal sonication parameters is discussed...
November 28, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29195754/determination-of-acoustic-cavitation-probabilities-and-thresholds-using-a-single-focusing-transducer-to-induce-and-detect-acoustic-cavitation-events-i-method-and-terminology
#9
Julian Haller, Volker Wilkens, Adam Shaw
A method to determine acoustic cavitation probabilities in tissue-mimicking materials (TMMs) is described that uses a high-intensity focused ultrasound (HIFU) transducer for both inducing and detecting the acoustic cavitation events. The method was evaluated by studying acoustic cavitation probabilities in agar-based TMMs with and without scatterers and for different sonication modes like continuous wave, single pulses (microseconds to milliseconds) and repeated burst signals. Acoustic cavitation thresholds (defined here as the peak rarefactional in situ pressure at which the acoustic cavitation probability reaches 50%) at a frequency of 1...
November 28, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29193279/numerical-and-experimental-evaluation-of-high-intensity-focused-ultrasound-induced-lesions-in-liver-tissue-ex-vivo
#10
Samaneh Haddadi, Mohammad Taghi Ahmadian
OBJECTIVES: Recent advances in the field of acoustics and piezoelectric and ultrasound transducers have led to new approaches to the diagnosis and treatment of certain diseases. One method of treatment with ultrasonic waves is high-intensity focused ultrasound (HIFU) treatment, which is a thermal therapeutic method used to treat malignant tumors. Although a variety of treatment-planning strategies using ultrasonic waves have been investigated, little clinical success has been achieved...
November 30, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29177714/non-invasive-high-intensity-focused-ultrasound-for-uv-induced-hyperpigmentation-in-fitzpatrick-skin-types-iii-and-iv-a-prospective-randomized-controlled-evaluator-blinded-trial
#11
Vasanop Vachiramon, Natthachat Jurairattanaporn, Sarawin Harnchoowong, Pamela Chayavichitsilp
Skin hyperpigmentation is a frequently encountered problem, particularly in darker skin types. Unfortunately, standard treatments for this condition have shown disappointing results. High-intensity focused ultrasound (HIFU) is commonly indicated for skin laxity, but recently was used to treat UV-induced hyperpigmentation in animal models. This study is aimed to evaluate the efficacy and safety of high-intensity focused ultrasound for UVB-induced hyperpigmentation in human subjects. A randomized, evaluator-blinded pilot study was conducted on 20 subjects...
November 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29168922/focused-ultrasound-tumor-ablation-and-its-potential-to-enhance-immunological-therapy-to-cancer
#12
Giovanni Mauri, Luca Nicosia, Zhen Xu, Salvatore Di Pietro, Lorenzo Monfardini, Guido Bonomo, Gianluca Maria Varano, Francesco Prada, Paolo Della Vigna, Franco Orsi
Various kind of image-guided techniques have been successfully applied in the last years for the treatment of tumours, as alternative to surgical resection. High Intensity focused ultrasound (HIFU) is a novel, totally non-invasive, image-guided technique that allow for achieving tissue destruction with the application of focused ultrasound at high intensity. This technique has been successfully applied for the treatment of a large variety of diseases, including oncological and non-oncological diseases. One of the most fascinating aspects of image-guided ablations, and particularly of HIFU, is the reported possibility of determining a sort of stimulation of the immune system, with an unexpected "systemic" response to treatments designed to be "local"...
November 23, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29166762/a-portable-high-intensity-focused-ultrasound-system-for-the-pancreas-with-3d-electronic-steering-a-preclinical-study-in-a-swine-model
#13
Won Chang, Jae Young Lee, Jae Hwan Lee, Jae Seok Bae, Yeon Jin Cho, Kook Jin Kang, Keonho Son, Yul Ri Chung, Kyoung Bun Lee, Joon Koo Han
Purpose: The aim of this animal study was to evaluate the safety and feasibility of a portable, ultrasonography-guided, high-intensity focused ultrasound (USg-HIFU) system to treat the pancreas. Methods: Eight swine were included. Using a portable HIFU device (ALPIUS 900, Alpinion Medical Systems), ablations were performed on the pancreas in vivo. Different acoustic intensities were applied (1.7 kW/cm2 or 1.5 kW/cm2 , n=2 [group A for a pilot study]; 1.5 kW/ cm2 , n=3 [group B]; and 1...
October 13, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29165881/nerve-injury-associated-with-high-intensity-focused-ultrasound-a-case-report
#14
Angkana Sathaworawong, Rungsima Wanitphakdeedecha
Skin laxity is a common cosmetic concern in middle-aged women. High-intensity focused ultrasound (HIFU) is one of noninvasive modalities that provides safe and effective improvement in skin laxity and tightening with minimal adverse effects. Concerning an extensive use of HIFU for facial rejuvenation, dermatologists should be aware of potential adverse effects of HIFU treatment. We herein present a case of 33-year-old Thai female with facial nerve injury after HIFU treatment for skin laxity.
November 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29161715/management-of-biochemical-recurrence-after-primary-curative-treatment-for-prostate-cancer-a-review
#15
Walter Artibani, Antonio Benito Porcaro, Vincenzo De Marco, Maria A Cerruto, Salvatore Siracusano
How to manage patients with prostate cancer (PCa) with biochemical recurrence (BCR) following primary curative treatment is a controversial issue. Importantly, this prostate-specific antigen (PSA)-only recurrence is a surrogate neither of PCa-specific survival nor of overall survival. Physicians are therefore challenged with preventing or delaying the onset of clinical progression in those deemed at risk, while avoiding over-treating patients whose disease may never progress beyond PSA-only recurrence. Adjuvant therapy for radical prostatectomy (RP) or local radiotherapy (RT) has a role in certain at-risk patients, although it is not recommended in low-risk PCa owing to the significant side-effects associated with RT and androgen deprivation therapy (ADT)...
November 21, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/29161293/high-intensity-focused-ultrasound-ablation-around-the-tubing
#16
Jun Yang Siu, Chenhui Liu, Yufeng Zhou
High-intensity focused ultrasound (HIFU) has been emerging as an effective and noninvasive modality in cancer treatment with very promising clinical results. However, a small vessel in the focal region could be ruptured, which is an important concern for the safety of HIFU ablation. In this study, lesion formation in the polyacrylamide gel phantom embedded with different tubing (inner diameters of 0.76 mm and 3 mm) at varied flow speeds (17-339 cm/s) by HIFU ablation was photographically recorded. Produced lesions have decreased length (~30%) but slightly increased width (~6%) in comparison to that without the embedded tubing...
2017: PloS One
https://www.readbyqxmd.com/read/29160777/motion-compensation-with-skin-contact-control-for-high-intensity-focused-ultrasound-surgery-in-moving-organs
#17
Alessandro Diodato, Andrea Cafarelli, Andrea Schiappacasse, Selene Tognarelli, Gastone C Ciuti, Arianna Menciassi
High Intensity Focused Ultrasound (HIFU) is an emerging therapeutic solution that enables non-invasive treatment of several pathologies, mainly in oncology. On the other hand, accurate targeting of moving abdominal organs (e.g., liver, kidney, pancreas) is still an open challenge. This paper proposes a novel method to compensate the physiological respiratory motion of organs during HIFU procedures, by exploiting a robotic platform for ultrasound-guided HIFU surgery provided with a therapeutic annular phased array transducer...
November 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29155701/an-ultrasonic-tool-for-nerve-conduction-block-in-diabetic-rat-models
#18
Yee Fun Lee, Chou-Ching Lin, Jung-Sung Cheng, Gin-Shin Chen
Nerve conduction block with a high intensity-focused ultrasound (HIFU) transducer has been performed in normal and diabetic animal models recently. HIFU can reversibly block the conduction of peripheral nerves without damaging the nerves while using an appropriate ultrasonic parameter. Temporary and partial block of the action potentials of nerves shows that HIFU has the potential to be a useful clinical treatment for pain relief. This work demonstrates the procedures for suppressing the action potentials of neuropathic nerves in diabetic rats in vivo using an HIFU transducer...
October 20, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29153363/uterine-fibroids-influence-of-t2-rim-sign-on-immediate-therapeutic-responses-to-magnetic-resonance-imaging-guided-high-intensity-focused-ultrasound-ablation
#19
Sin Yuin Yeo, Young-Sun Kim, Hyo Keun Lim, Hyunchul Rhim, Sin-Ho Jung, Na Young Hwang
OBJECTIVES: To investigate the influence of a high-signal-intensity peripheral rim on T2-weighted MR images (i.e., T2-rim sign) on the immediate therapeutic responses of MR-guided high intensity focused ultrasound (MR-HIFU) ablation of uterine fibroids. METHODS: This retrospective study was approved by the institutional review board, and patient informed consent was obtained for MR-HIFU ablation. In total, 196 fibroids (diameter 6.2±2.6cm) in 123 women (age 43...
December 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29137800/passive-acoustic-mapping-of-cavitation-using-eigenspace-based-robust-capon-beamformer-in-ultrasound-therapy
#20
Shukuan Lu, Hong Hu, Xianbo Yu, Jiangying Long, Bowen Jing, Yujin Zong, Mingxi Wan
Pulse-echo imaging technique can only play a role when high intensity focused ultrasound (HIFU) is turned off due to the interference between the primary HIFU signal and the transmission pulse. Passive acoustic mapping (PAM) has been proposed as a tool for true real-time monitoring of HIFU therapy. However, the most-used PAM algorithm based on time exposure acoustic (TEA) limits the quality of cavitation image. Recently, robust Capon beamformer (RCB) has been used in PAM to provide improved resolution and reduced artifacts over TEA-based PAM, but the presented results have not been satisfactory...
March 2018: Ultrasonics Sonochemistry
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