نتایج جستجو برای: ablation techniques

تعداد نتایج: 674324  

2017
Tito Livraghi

Hepatocellular carcinoma (HCC) is a multicentric malignant tumor. The underlying liver disease of HCC is most often chronic hepatitis or cirrhosis of viral, or less commonly alcoholic, origin. The only method of detecting the tumor before it becomes advanced is screening the patient with ultrasound every six months. Even if the detected tumor is single, other tumors will appear eventually, the ...

2017
Sergio Sartori Francesca Di Vece Francesca Ermili Paola Tombesi

Radiofrequency ablation (RFA) is currently the most popular and used ablation modality for the treatment of non surgical patients with primary and secondary liver tumors, but in the last years microwave ablation (MWA) is being technically improved and widely rediscovered for clinical use. Laser thermal ablation (LTA) is by far less investigated and used than RFA and MWA, but the available data ...

Journal: :AJNR. American journal of neuroradiology 2017
A Tomasian A N Wallace J W Jennings

Minimally invasive percutaneous imaging-guided techniques have been shown to be safe and effective for the treatment of benign tumors of the spine. Techniques available include a variety of tumor ablation technologies, including radiofrequency ablation, cryoablation, microwave ablation, alcohol ablation, and laser photocoagulation. Vertebral augmentation may be performed after ablation as part ...

2012
J P Daniels

Objective To determine the relative effectiveness of second generation ablation techniques in the treatment of heavy menstrual bleeding. Design Network meta-analysis on the primary outcome measures of amenorrhoea, heavy bleeding, and patients’ dissatisfaction with treatment. Data sources Nineteen randomised controlled trials (involving 3287 women) were identified through electronic searches of ...

2017
Joseph R. Feste

It has been reported that approximately 670,000 hysterectomies are performed each year in the United States. Close to one third (more than 200,000) of these operations are done because of intractable menorrhagia not responsive to medical therapy or to dilation and curettage. The Nd:YAG laser was first used by Goldrath and colleagues showing that this laser can photocoagulate the endometrium and...

2011
Emilio J. Gualda Javier R. Vázquez de Aldana M. Carmen Martínez-García Pablo Moreno Juan Hernández-Toro Luis Roso Pablo Artal Juan M. Bueno

The performance of femtosecond (fs) laser intrastromal ablation was evaluated with backscattering-mode adaptive-optics multiphoton microscopy in ex vivo chicken corneas. The pulse energy of the fs source used for ablation was set to generate two different ablation patterns within the corneal stroma at a certain depth. Intrastromal patterns were imaged with a custom adaptive-optics multiphoton m...

2010
Punit Prakash

Thermal tissue ablation is an interventional procedure increasingly being used for treatment of diverse medical conditions. Microwave ablation is emerging as an attractive modality for thermal therapy of large soft tissue targets in short periods of time, making it particularly suitable for ablation of hepatic and other tumors. Theoretical models of the ablation process are a powerful tool for ...

Journal: :Medical physics 2008
Man Zhang Benjamin Castaneda Jared Christensen Wael E Saad Kevin Bylund Kenneth Hoyt John G Strang Deborah J Rubens Kevin J Parker

Sonoelastography has been developed as an ultrasound-based elasticity imaging technique. In this technique, external vibration is induced into the target tissue. In general, tissue stiffness is inversely proportional to the amplitude of tissue vibration. Imaging tissue vibration will provide the elasticity distribution in the target region. This study investigated the feasibility of using real-...

Journal: :Reviews in obstetrics & gynecology 2013
Diana Aldape Scott G Chudnoff Mark D Levie

Abnormal uterine bleeding (AUB) affects 30% of women at some time during their reproductive years and is one of the most common reasons a woman sees a gynecologist. Many women are turning to endometrial ablation to manage their AUB. This article reviews the data relating to the available endometrial ablation techniques performed with hysteroscopic sterilization, and focuses on data from patient...

Journal: :Diagnostic and interventional radiology 2012
Servet Tatli Umit Tapan Paul R Morrison Stuart G Silverman

Radiofrequency ablation is the most commonly used percutaneous ablation technique and well-documented in the literature on focal therapies. It has become the image-guided ablation method of choice because of its efficacy, safety, and ease of use. Radiofrequency ablation has shown promise in treating selected solid tumors, particularly those involving the liver, kidneys, lungs, ...

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