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Radio frequency ablation cancer

Ibrahim Nassour, Patricio M Polanco
Minimally invasive surgery has been cautiously introduced in surgical oncology over the last two decades due to a concern of compromised oncological outcomes. Recently, it has been adopted in liver surgery for colorectal metastases. Colorectal cancer is a major cause of cancer-related death in the USA. In addition, liver metastasis is the most common site of distant disease and its resection improves survival. While open resection was the standard of care, laparoscopic liver surgery has become the standard of care for minor liver resections...
April 2016: Current Colorectal Cancer Reports
Sabrina Bimonte, Maddalena Leongito, Mauro Piccirillo, Cristina de Angelis, Claudia Pivonello, Vincenza Granata, Francesco Izzo
Hepatocellular carcinoma (HCC) is the fifth most frequent cancer worldwide with high morbidity, mortality and increasing incidence. It is of note that the main curative therapies for HCC are hepatic resection and transplantation although the majority of patients at the time of presentation are not eligible for resection or orthotopic liver transplantation (OLT) due to the underlying cirrhosis. Currently, a variety of loco-regional therapies, including radiofrequency ablation (RFA), percutaneous ethanol injection (PEI), microwave coagulation therapy (MCT), transarterial chemoembolization (TACE) and others, have been developed as alternative treatment options for HCC...
2016: Infectious Agents and Cancer
Michele Diana, Luigi Schiraldi, Yu-Yin Liu, Riccardo Memeo, Didier Mutter, Patrick Pessaux, Jacques Marescaux
BACKGROUND: High intensity focused ultrasound (HIFU) is emerging as a valid minimally-invasive image-guided treatment of malignancies. We aimed to review to current state of the art of HIFU therapy applied to the digestive system and discuss some promising avenues of the technology. METHODS: Pertinent studies were identified through PubMed and Embase search engines using the following keywords, combined in different ways: HIFU, esophagus, stomach, liver, pancreas, gallbladder, colon, rectum, and cancer...
August 2016: Hepatobiliary Surgery and Nutrition
Saeedeh Mobasheri, Hamid Behnam, Parisa Rangraz, Jahan Tavakkoli
High-intensity focused ultrasound (HIFU) is a novel treatment modality used by scientists and clinicians in the recent decades. This modality has had a great and significant success as a noninvasive surgery technique applicable in tissue ablation therapy and cancer treatment. In this study, radio frequency (RF) ultrasound signals were acquired and registered in three stages of before, during, and after HIFU exposures. Different features of RF time series signals including the sum of amplitude spectrum in the four quarters of the frequency range, the slope, and intercept of the best-fit line to the entire power spectrum and the Shannon entropy were utilized to distinguish between the HIFU-induced thermal lesion and the normal tissue...
April 2016: Journal of Medical Signals and Sensors
Pallavi Tiwari, Shabbar F Danish, Benjamin Jiang, Anant Madabhushi
Laser interstitial thermal therapy (LITT) has recently emerged as a new treatment modality for cancer pain management that targets the cingulum (pain center in the brain) and has shown promise over radio frequency (RF)-based ablation, due to magnetic resonance image (MRI) guidance that allows for precise ablation. Since laser ablation for pain management is currently exploratory and is only performed at a few centers worldwide, its short- and long-term effects on the cingulum are currently unknown. Traditionally, treatment effects for neurological conditions are evaluated by monitoring changes in intensities and/or volume of the ablation zone on post-treatment Gadolinium-contrast T1-w (Gd-T1) MRI...
October 2015: Journal of Medical Imaging
Xiaowei Lu, Hayato Kikuchi, Kazumasa Hirooka, Yosuke Isobe, Hiroki Watanabe, Yo Kobayashi, Tomoyuki Miyashita, Masakatsu G Fujie
Recently, radio frequency ablation (RFA) has become one of the most popular thermal treatments for liver cancer. RFA is minimally invasive and effective in inducing tumor coagulation, however, because use the procedure depends on the experience of the physician, consistent accuracy cannot be guaranteed. In particular, when the tumor is close to a large vessel, a suboptimal ablation margin can result in tumor recurrence. To improve the accuracy of RFA treatment, we have developed an RFA supporting system, which was constructed by using finite element method and operated by means of a model-based control method...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
J Piechaud-Kressmann, L Bellec, M-C Delchier-Bellec, J-B Beauval, M Roumiguié, X Gamé, M Soulie, P Rischmann, B Malavaud
OBJECTIVE: The stage of discovery and treatment of kidney cancer have changed. Partial nephrectomy is the standard treatment for small renal masses (SRM). Also are recommended the thermal ablative techniques. The cost of these treatments for the establishment and society is often unclear. The purpose of this study was to calculate the cost of treatment of SRM in order to assess the profitability for a health institution that invests in innovation. MATERIALS AND METHODS: A retrospective single-center study was conducted with 124 patients treated for SMR (T1a) by open partial nephrectomy (OPN), laparoscopic partial nephrectomy (LPN) and robot-assisted partial nephrectomy (LRPN), radio frequency (RF) and cryotherapy (CT) between 2009 and 2011...
February 2016: Progrès en Urologie
Hyunjae Lee, Youngsik Lee, Changyeong Song, Hye Rim Cho, Roozbeh Ghaffari, Tae Kyu Choi, Kyung Hoon Kim, Young Bum Lee, Daishun Ling, Hyuk Lee, Su Jong Yu, Seung Hong Choi, Taeghwan Hyeon, Dae-Hyeong Kim
The gastrointestinal tract is a challenging anatomical target for diagnostic and therapeutic procedures for bleeding, polyps and cancerous growths. Advanced endoscopes that combine imaging and therapies within the gastrointestinal tract provide an advantage over stand-alone diagnostic or therapeutic devices. However, current multimodal endoscopes lack the spatial resolution necessary to detect and treat small cancers and other abnormalities. Here we present a multifunctional endoscope-based interventional system that integrates transparent bioelectronics with theranostic nanoparticles, which are photoactivated within highly localized space near tumours or benign growths...
November 30, 2015: Nature Communications
Baudouin Denis de Senneville, Chrit Moonen, Mario Ries
MRI-guided High Intensity Focused Ultrasound (MRI-HIFU) is a promising method for the non-invasive ablation of pathological tissue in many organs, including mobile organs such as liver and kidney. The possibility to locally deposit thermal energy in a non-invasive way opens a path towards new therapeutic strategies with improved reliability and reduced associated trauma, leading to improved efficacy, reduced hospitalization and costs. Liver and kidney tumors represent a major health problem because not all patients are suitable for curative treatment with surgery...
2016: Advances in Experimental Medicine and Biology
Jinjin Shi, Zhaoyang Chen, Lei Wang, Binghua Wang, Lihua Xu, Lin Hou, Zhenzhong Zhang
UNLABELLED: Taking advantages of fullerene (C60) and gold nanoparticles (AuNPs) for potentials in photodynamic therapy (PDT), drug delivery and radio frequency thermal therapy (RTT), a C60@Au hybrid nanocomposite was synthesized by chemical deposition of Au nanoparticles onto C60, and functionalized by PEG5000 via a pH cleavable hydrazone bond, making C60@Au-PEG keep the PEG on the surface of drug delivery system during circulation but dissociate PEG from the system after accumulation in tumor tissue, then doxorubicin (DOX) was loaded onto C60@Au-PEG with a very high drug loading efficiency...
January 2016: Acta Biomaterialia
Hong Chen, Gary Y Hou, Yang Han, Thomas Payen, Carmine F Palermo, Kenneth P Olive, Elisa E Konofagou
Harmonic motion imaging (HMI) is a radiationforce- based elasticity imaging technique that tracks oscillatory tissue displacements induced by sinusoidal ultrasonic radiation force to assess the resulting oscillatory displacement denoting the underlying tissue stiffness. The objective of this study was to evaluate the feasibility of HMI in pancreatic tumor detection and high-intensity focused ultrasound (HIFU) treatment monitoring. The HMI system consisted of a focused ultrasound transducer, which generated sinusoidal radiation force to induce oscillatory tissue motion at 50 Hz, and a diagnostic ultrasound transducer, which detected the axial tissue displacements based on acquired radio-frequency signals using a 1-D cross-correlation algorithm...
September 2015: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Ha Manh Luu, Camiel Klink, Wiro Niessen, Adriaan Moelker, Theo van Walsum, Camiel Klink, Adriaan Moelker
PURPOSE: In image-guided radio frequency ablation for liver cancer treatment, pre- and post-interventional CT images are typically used to verify the treatment success of the therapy. In current clinical practice, the tumor zone in the diagnostic, preinterventional images is mentally or manually mapped to the ablation zone in the post-interventional images to decide success of the treatment. However, liver deformation and differences in image quality as well as in texture of the ablation zone and the tumor area make the mental or manual registration a challenging task...
September 2015: Medical Physics
Gianluigi Mazzoccoli, Roberto Tarquini, Alice Valoriani, Jude Oben, Manlio Vinciguerra, Fabio Marra
Hepatocellular carcinoma (HCC) is a highly prevalent disease ranking among the ten most common cancers worldwide with increasing trend of incidence in most developed countries. The great healthcare costs and economic burden of HCC dictate proper preventive interventions as well as surveillance and screening programs to decrease disease incidence and allow early diagnosis. HCC treatment outcomes are affected by several variables, including liver function, patient's performance status, and tumor stage. In line with the Barcelona Clinic Liver Cancer (BCLC) staging curative treatments, such as surgery or radio-frequency ablation, are indicated in early-stage HCC (BCLC-A), and the noncurative treatments are indicated in intermediate and advanced stages of HCC (BCLC-B, C)...
August 2016: Clinical and Experimental Medicine
V M Prunoiu, M A Marincaş, C Cirimbei, S Ionescu, S Zurac, M Radu, R Nicolaescu, E Brătucu, N D Straja
INTRODUCTION: The paper deals with the diagnosis of some aggressive forms of uterine cervix cancers, resistant to radio chemotherapy, using biomolecular markers.For this study, the destruction of tumours in stages II-IIIBis carried out by hyperthermia induced by different sources of energy. The aimed targets are toembed a quick and simple technique of haemostas isused in bleeding uterine cervix tumours associated with acute an aemiain the treatment protocols and to identify biomolecular criteria revealing tumour aggressiveness and treatment response...
March 2015: Chirurgia
Craig S Brown, Michael B Ujiki
Esophageal adenocarcinoma has the fastest growing incidence rate of any cancer in the United States, and currently carries a very poor prognosis with 5 years relative survival rates of less than 15%. Current curative treatment options are limited to esophagectomy, a procedure that suffers from high complication rates and high mortality rates. Metaplasia of the esophageal epithelium, a condition known as Barrett's esophagus (BE), is widely accepted as the precursor lesion for adenocarcinoma of the esophagus...
May 16, 2015: World Journal of Gastrointestinal Endoscopy
Shaocheng Lü, Wanqing Gu, Yurong Liang, Wenzhi Zhang, Yanbin Wang, Yongliang Chen, Huixing Li, Xianjie Shi
OBJECTIVE: To explore the clinical efficacies of different surgical strategies for patients with advanced pancreatic carinoma. METHODS: Retrospective analyses were conducted for the clinical data of 223 advanced pancreatic carinoma patients between January 2009 and December 2013 according to the inclusion criteria. And, according to different surgical strategies, they were divided into seed group (n = 49), radio frequency ablation group (n = 51), radiotherapy group (n = 17) and control group (n = 106)...
January 13, 2015: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Jun Luo, Xueyi Ren, Tinghe Yu
PURPOSE: To evaluate the efficacy of extracorporeal ultrasound-guided high intensity focused ultrasound (HIFU) based upon data in controlled clinical trials in China. MATERIALS AND METHODS: Data in 75 controlled trials involving in 833 cases of benign and 4559 cases of malignant diseases were re-evaluated. RESULTS: In uterine fibroid, ectopic pregnancy and chyluria, the efficacy of HIFU was similar to that of surgery or drugs. The survival rate of HIFU plus radiotherapy was less than that of radical surgery in operable liver cancer...
June 2015: International Journal of Radiation Biology
N Sanoj Rejinold, R Jayakumar, Yeu-Chun Kim
Radiofrequency (RF)-assisted cancer therapy is well-known in the medical field as it is non-hazardous and can penetrate tissues, enabling a deeply rooted cancer treatment. However, the current treatment regimen is non-specific and invasive, making it difficult for patients to undergo the RF ablation procedure. Recently, there has been tremendous attention given on replacing RF probes (through which the RF current passes into the tumors) with metallic nanoparticles (NPs) such as gold and iron oxide. These metallic NPs can be combined with stimuli responsive polymers to have a simultaneous drug delivery to tumors and better thermal ablation...
April 28, 2015: Journal of Controlled Release: Official Journal of the Controlled Release Society
Rehan Haidry, Laurence Lovat, Prateek Sharma
Barrett's oesophagus is the only know pre-cursor to oesophageal adenocarcinoma. The incidence of OAC is growing rapidly in the western world with a poor prognosis for most with a 5-year survival of only 15%. The approach to treating patients with neoplasia arising within BE has dramatically changed in the past 5 years. Resection of visible lesions with endoscopic mucosal resection followed by field ablation with radio-frequency ablation is now the accepted standard of care in these patients worldwide. This combined approach has shown high rates of disease reversal in several high quality clinical trials but also large volume registry studies...
March 2015: Current Gastroenterology Reports
Kotaro Miyazawa, Shigeru Yoshioka, Masayuki Shiobara, Kazuo Wakatsuki, Masaaki Kataoka, Syuka Arai, Kazuhito Yamazaki
A 69-year-old woman with back pain underwent distal pancreatectomy with left adrenectomy for advanced pancreatic cancer pathologically diagnosed as poorly differentiated invasive ductal carcinoma with retroperitoneal and perineural invasion, pT3N0M0, Stage III. The patient received adjuvant chemotherapy with S-1 for 6 months. However, 3 years after surgery, computed tomography (CT) revealed para-aorticlymph node (LN) recurrence. Treatment with gemcitabine (GEM) was begun and continued for 3 years. Following progression of the LN recurrence 5 and half years after surgery, administration of radiotherapy reduced diarrhea and back pain...
November 2014: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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