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Thermal ablation

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https://www.readbyqxmd.com/read/29155640/recurrence-of-renal-cell-cancers-after-thermal-ablation
#1
Yanjun Bai
No abstract text is available yet for this article.
December 2017: Radiology
https://www.readbyqxmd.com/read/29155621/science-to-practice-enhancing-photothermal-ablation-of-colorectal-liver-metastases-with-targeted-hybrid-nanoparticles
#2
Xiaoming Yang
Image-guided percutaneous thermal ablation has been one of the principal tools in management of unresectable liver malignancies, including colorectal liver metastases (CRLM) ( 1 ). Currently, however, this technique is suitable mainly for tumors less than 4-5 cm in diameter and also results in incomplete ablation at tumor margins ( 2 ). To solve these problems, efforts have been made to combine thermal ablation with other treatment options, such as systemic and intra-arterial administration of therapeutics ( 3 - 5 )...
December 2017: Radiology
https://www.readbyqxmd.com/read/29149150/the-hopeless-case-palliative-cryoablation-and-cementoplasty-procedures-for-palliation-of-large-pelvic-bone-metastases
#3
Tyler M Coupal, Kevin Pennycooke, Paul I Mallinson, Hugue A Ouellette, Paul W Clarkson, Pippa Hawley, Peter L Munk
BACKGROUND: Metastases to the bone are common in cancer patients, and it has been estimated that up to 50% of patients with pelvic bone metastases will not achieve adequate pain control with medications alone. This has led to a paradigm shift over recent years towards the use and development of minimally invasive image-guided treatment options for palliation of bony metastases. Despite these developments, large metastatic lesions are still often considered to be "hopeless cases" that would garner little to no benefit from image-guided intervention...
November 2017: Pain Physician
https://www.readbyqxmd.com/read/29148776/coagulation-of-metals-in-superfluid-and-normal-liquid-helium
#4
Eugene B Gordon, Alexander Vladimirovich Karabulin, Mikhail I Kulish, Vladimir Igorevich Matyushenko, Maxim E Stepanov
The thermal emission study in this work has shown that coagulation of metals in liquid helium is accompanied by enormous local overheating of several thousand degrees. Direct experiments demonstrated, for the first time, that condensation of metals in superfluid helium occurs via the specific mechanism which is substantially faster than that in normal liquid helium. It has been stated that coagulation of metals in superfluid helium indeed occurs in two stages - a "hot" one of nanoparticles coalescence with the formation of molten nanospheres and the subsequent stage of their sticking together into nanowires...
November 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29140463/anatomic-investigation-of-the-trajectory-for-stereotactic-laser-amygdalohippocampectomy
#5
Vanessa M Holanda, Abuzer Gungor, Serhat Baydin, Erik H Middlebrooks, Shabbar F Danish
BACKGROUND: Magnetic resonance imaging-guided laser interstitial thermal therapy (LITT) has emerged as a promising treatment for mesial temporal lobe epilepsy. Surgeons must understand the relevant anatomy that is traversed by the catheter and affected by ablation. OBJECTIVE: To study the anatomic structures crossed by the LITT catheter until it reaches the amygdala. METHODS: Three human cadaveric heads were implanted with catheters using a frameless stereotactic technique...
November 11, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29119255/combining-raman-and-laser-induced-breakdown-spectroscopy-by-double-pulse-lasing
#6
Vasily N Lednev, Sergey M Pershin, Pavel A Sdvizhenskii, Mikhail Ya Grishin, Alexander N Fedorov, Vladimir V Bukin, Vadim B Oshurko, Alexander N Shchegolikhin
A new approach combining Raman spectrometry and laser induced breakdown spectrometry (LIBS) within a single laser event was suggested. A pulsed solid state Nd:YAG laser running in double pulse mode (two frequency-doubled sequential nanosecond laser pulses with dozens microseconds delay) was used to combine two spectrometry methods within a single instrument (Raman/LIBS spectrometer). First, a low-energy laser pulse (power density far below ablation threshold) was used for Raman measurements while a second powerful laser pulse created the plasma suitable for LIBS analysis...
November 8, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29112473/percutaneous-thermal-ablation-of-spinal-metastases-recent-advances-and-review
#7
Anderanik Tomasian, Afshin Gangi, Adam N Wallace, Jack W Jennings
OBJECTIVE: The purpose of this study was to review the available armamentarium and most recent advances in minimally invasive, image-guided percutaneous thermal ablation for treatment of spinal metastases. CONCLUSION: Minimally invasive percutaneous spine thermal ablation technologies have proved safe and effective in management of selected patients with spinal metastases. Special attention to procedure techniques including choice of ablation modality, thermoprotection, adequacy of treatment, and postablation imaging is essential for improved patient outcomes...
November 7, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29111296/a-neurosurgeon-s-view-laser-interstitial-thermal-therapy-of-mesial-temporal-lobe-structures
#8
Yarema B Bezchlibnyk, Jon T Willie, Robert E Gross
Stereotactic laser ablation of mesial temporal structures is a promising new surgical intervention for patients with mesial temporal lobe epilepsy (MTLE). Since this procedure was first used to treat MTLE in 2010, the literature contains reports of 37 patients that underwent MR-guided stereotactic laser amygdalohippocampotomy (SLAH) using Laser Interstitial Thermal Therapy (LITT) with at least 1year of follow-up. This early body of data suggests that SLAH is a safe and effective treatment for MTLE in properly selected patients...
October 27, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29107679/efficacy-and-safety-of-selective-internal-radiotherapy-with-yttrium-90-resin-microspheres-compared-with-sorafenib-in-locally-advanced-and-inoperable-hepatocellular-carcinoma-sarah-an-open-label-randomised-controlled-phase-3-trial
#9
Valérie Vilgrain, Helena Pereira, Eric Assenat, Boris Guiu, Alina Diana Ilonca, Georges-Philippe Pageaux, Annie Sibert, Mohamed Bouattour, Rachida Lebtahi, Wassim Allaham, Hélène Barraud, Valérie Laurent, Elodie Mathias, Jean-Pierre Bronowicki, Jean-Pierre Tasu, Rémy Perdrisot, Christine Silvain, René Gerolami, Olivier Mundler, Jean-Francois Seitz, Vincent Vidal, Christophe Aubé, Frédéric Oberti, Olivier Couturier, Isabelle Brenot-Rossi, Jean-Luc Raoul, Anthony Sarran, Charlotte Costentin, Emmanuel Itti, Alain Luciani, René Adam, Maïté Lewin, Didier Samuel, Maxime Ronot, Aurelia Dinut, Laurent Castera, Gilles Chatellier
BACKGROUND: Sorafenib is the recommended treatment for patients with advanced hepatocellular carcinoma. We aimed to compare the efficacy and safety of sorafenib to that of selective internal radiotherapy (SIRT) with yttrium-90 ((90)Y) resin microspheres in patients with hepatocellular carcinoma. METHODS: SARAH was a multicentre, open-label, randomised, controlled, investigator-initiated, phase 3 trial done at 25 centres specialising in liver diseases in France. Patients were eligible if they were aged at least 18 years with a life expectancy greater than 3 months, had an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1, Child-Pugh liver function class A or B score of 7 or lower, and locally advanced hepatocellular carcinoma (Barcelona Clinic Liver Cancer [BCLC] stage C), or new hepatocellular carcinoma not eligible for surgical resection, liver transplantation, or thermal ablation after a previously cured hepatocellular carcinoma (cured by surgery or thermoablative therapy), or hepatocellular carcinoma with two unsuccessful rounds of transarterial chemoembolisation...
October 26, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/29103291/current-and-future-uses-of-transcranial-focused-ultrasound-in-neurosurgery
#10
David S Hersh, Howard M Eisenberg
Focused ultrasound (FUS) produces a region of high intensity at the focal zone of the beam but with minimal effects at adjacent areas, allowing the sonication of deep targets throughout the body. Despite early obstacles to transmitting ultrasound energy through the skull, recent advances in ultrasound technology, software, and real-time monitoring have resulted in a renewed interest in the clinical applications of transcranial FUS. Following extensive pre- clinical studies, ultrasound-induced thermal ablation has been approved by several countries for the treatment of essential tremor, Parkinson's disease, obsessive-compulsive disorder, depression, and neuropathic pain...
November 3, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29102464/partial-nephrectomy-versus-thermal-ablation-for-clinical-stage-t1-renal-masses-systematic-review-and-meta-analysis-of-more-than-3-900-patients
#11
REVIEW
J Ricardo Rivero, Jose De La Cerda, Hanzhang Wang, Michael A Liss, Ann M Farrell, Ronald Rodriguez, Rajeev Suri, Dharam Kaushik
PURPOSE: A systematic review and meta-analysis of clinical trials was undertaken to compare percutaneous thermal ablation versus partial nephrectomy (PN) for stage T1 renal tumors. MATERIALS AND METHODS: A comprehensive search of major databases was conducted from October 2000 to July 2016. Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines were followed. Incidences of all-cause mortality (ACM), cancer-specific mortality (CSM), local recurrence (LR), and metastases, as well as complication rates and changes in estimated glomerular filtration rate (eGFR), were evaluated...
November 1, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29101365/biomineral-nano-theranostic-agent-for-magnetic-resonance-image-guided-augmented-radiofrequency-ablation-of-liver-tumor
#12
Anusha Ashokan, Vijay Harish Somasundaram, Genekehal Siddaramana Gowd, Ida M Anna, Giridharan L Malarvizhi, Badrinathan Sridharan, Rupal B Jobanputra, Reshmi Peethambaran, A K K Unni, Shantikumar Nair, Manzoor Koyakutty
Theranostic nanoparticles based on biocompatible mineral compositions can significantly improve the translational potential of image guided cancer nano-therapy. Here, we report development of a single-phase calcium phosphate biomineral nanoparticle (nCP) with dual-mode magnetic resonance contrast (T1-T2) together with radiofrequency (RF) mediated thermal response suitable for image-guided RF ablation of cancer. The nanoparticles (NP) are engineered to provide dual MR contrast by an optimized doping concentration (4...
November 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29096566/perivascular-extension-of-microwave-ablation-zone-demonstrated-using-an-ex-vivo-porcine-perfusion-liver-model
#13
Saurabh Singh, Pulathis Nilantha Siriwardana, Edward William Johnston, Jennifer Watkins, Steve Bandula, Rowland Illing, Brian Ritchie Davidson
Microwave ablation (MWA) has been proposed to suffer less from the heat sink effect compared to radiofrequency ablation but has been reported to cause extension of the ablation zone along intrahepatic vessels in clinical practice. To study this effect in detail, eight fresh porcine livers were perfused in an ex-vivo organ perfusion system. Livers were perfused with oxygenated, O-positive human blood at 37°C. Perfusion was discontinued immediately before ablation in the non-perfused group (n = 4) whilst in the perfused group (n = 4) perfusion was maintained during MWA (140W X 2min)...
November 2, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29083350/ct-guided-radiofrequency-ablation-of-osteoid-osteoma-using-a-multi-tined-expandable-electrode-system
#14
Alessandro Costanzo, Andrea Sandri, Dario Regis, Giacomo Trivellin, Silvia Pierantoni, Elena Samaila, Bruno Magnan
BACKGROUND AND AIM OF THE WORK: Radiofrequency ablation (RFA) is the gold standard for the treatment of symptomatic osteoid osteoma (OO) as RFA yields both a high success and low complication rate. It has been widely utilized over the years, but recurrences of OO after this treatment have been documented. These recurrences may be the result of various factors, including incomplete tumor ablation, and are significantly higher in lesions greater than 10 mm. Thus, the need to induce thermal ablation in a wider area led us to use a Multi-Tined Expandable Electrode System (MTEES)...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29082796/thermal-ablation-of-hepatocellular-carcinoma-in-patients-with-abnormal-coagulation-function
#15
Qiannan Huang, Erjiao Xu, Lei Tan, Qingjing Zeng, Rongqin Zheng, Kai Li
OBJECTIVE: To evaluate the safety of thermal ablation for hepatocellular carcinoma (HCC) in patients with abnormal coagulation function. METHODS: Fifty-seven HCC tumours in 50 patients were treated with thermal ablation. All patients had a meted platelet count <50 × 10(9)/L or international normalised ratio (INR) ≥ 1.7. Gastroscopy before ablation, platelet concentrate or fresh frozen plasma transfusion during ablation and contrast enhanced ultrasoundgraphy (CEUS)-guided ablation to cease needle tract bleeding were performed to reduce haemorrhage...
October 30, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29076274/transcranial-mri-guided-high-intensity-focused-ultrasound-for-treatment-of-essential-tremor-a-pilot-study-on-the-correlation-between-lesion-size-lesion-location-thermal-dose-and-clinical-outcome
#16
Christian Federau, Maged Goubran, Jarrett Rosenberg, Jaimie Henderson, Casey H Halpern, Veronica Santini, Max Wintermark, Kim Butts Pauly, Pejman Ghanouni
BACKGROUND: Transcranial MR-guided high-intensity focused ultrasound (tcMRgFUS) is a promising noninvasive method to treat medication-refractory essential tremor. PURPOSE/HYPOTHESIS: To define the correlation between lesion size after ablation, thermal dose, and clinical outcome in tcMRgFUS treatment of essential tremor. STUDY TYPE: Retrospective. POPULATION/SUBJECTS/PHANTOM/SPECIMEN/ANIMAL MODEL: Eight patients with medication-refractory essential tremor were treated using a tcMRgFUS system at 3T...
October 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29075878/treatment-for-localized-t1a-clear-cell-renal-cell-carcinoma-survival-benefit-for-cryosurgery-and-thermal-ablation-compared-to-deferred-therapy
#17
Annemarie Uhlig, Oliver Hahn, Arne Strauss, Joachim Lotz, Lutz Trojan, René Müller-Wille, Johannes Uhlig
PURPOSE: To evaluate survival of patients with localized T1a clear cell renal cell carcinoma (ccRCC) who received cryosurgery or thermal ablation compared to deferred therapy. MATERIALS AND METHODS: We included 733 patients with histopathologically confirmed localized T1a ccRCC who either received cryosurgery (n = 315) or thermal ablation (n = 155), as well as patients who deferred therapy (n = 263) from the 2000-2013 Surveillance, Epidemiology, and End Results Program urinary cancer file...
October 26, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29074273/real-time-spatiotemporal-control-of-high-intensity-focused-ultrasound-thermal-ablation-using-echo-decorrelation-imaging-in-ex-vivo-bovine-liver
#18
Mohamed A Abbass, Jakob K Killin, Neeraja Mahalingam, Fong Ming Hooi, Peter G Barthe, T Douglas Mast
The ability to control high-intensity focused ultrasound (HIFU) thermal ablation using echo decorrelation imaging feedback was evaluated in ex vivo bovine liver. Sonications were automatically ceased when the minimum cumulative echo decorrelation within the region of interest exceeded an ablation control threshold, determined from preliminary experiments as -2.7 (log-scaled decorrelation per millisecond), corresponding to 90% specificity for local ablation prediction. Controlled HIFU thermal ablation experiments were compared with uncontrolled experiments employing two, five or nine sonication cycles...
October 23, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29060958/a-case-of-hypertensive-crisis-without-a-surge-in-adrenal-hormones-after-radiofrequency-ablation-as-a-treatment-for-primary-hepatocellular-carcinoma
#19
Kyung Jin Lee, Soo Hyung Ryu
Radiofrequency ablation (RFA) is a minimally invasive procedure that has been considered as a relatively safe treatment for patients with small hepatocellular carcinoma (HCC). However, RFA has been shown to be associated with complications including mechanical and thermal damage. A 74-year-old man with hepatitis C virus-associated HCC was admitted to our hospital. Abdominal computed tomography revealed two lobulated-HCC in segments 4 and 5. He had no medical history of hypertension and cardiac disease. During RFA, blood pressure was elevated to 200/140 mmHg...
October 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29060905/effects-of-nd-yag-laser-for-the-controlled-and-localized-treatment-of-early-gastrointestinal-tumors-preliminary-in-vivo-study
#20
P Saccomandi, G Quero, G Costamagna, M Diana, J Marescaux
Endoscopic submucosal dissection (ESD) is a minimally invasive technique allowing for the removal of early gastrointestinal (GI) tumors, widely considered as a valid alternative to conventional surgery. However, ESD is technically demanding, and potentially severe complications, such as bleeding and perforation, may occur. Energy-based techniques (e.g., radiofrequency ablation) might offer a potential alternative to ESD. However, their use mandates the ability to predict the damage induced and to identify a "signature" of the complete ablation, without the need for a physical specimen...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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