Sökning: "Radio frequency ablation"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Radio frequency ablation.

  1. 1. Impact of Tissue Characteristics on Radio-Frequency Lesioning and Navigation in the Brain : Simulation, experimental and clinical studies

    Författare :Johannes Johansson; Karin Wårdell; Hans von Holst; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Brain; Radio frequency ablation; Finite element method; Monte Carlo simulation; light reflectance; Radiological research; Radiologisk forskning;

    Sammanfattning : Radio-Frequency (RF) lesioning, or RF ablation, is a method that uses high frequency currents for thermal coagulation of pathological tissue or signal pathways. The current is delivered from an electrode, which also contains a temperature sensor permitting control of the current at a desired target temperature. In the brain, RF lesioning can e.g. LÄS MER

  3. 2. Thermocoagulation in Deep Brain Structures : Modelling, simulation and experimental study of radio-frequency lesioning

    Författare :Johannes Johansson; Karin Wårdel; Stefan Andersson-Engels; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosurgery; Radiofrequency ablation; Finite element method; Blood perfusion; Cerebrospinal fluid; Free convection; Neurosurgery; Neurokirurgi;

    Sammanfattning : Radio-frequency (RF) lesioning is a method utilising high frequency currents for thermal coagulation of pathological tissue or signal pathways. The current is delivered from an electrode with a temperature sensor, permitting control of the current at a desired target temperature. In the brain RF-lesioning can e.g. LÄS MER

  4. 3. New techniques in liver surgery

    Författare :Ulf Jersenius; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The development of liver surgery has a long history and through the years, much knowledge has been gathered concerning various aspects of the liver. The exploration and understanding of liver anatomy and liver regeneration and development of surgical techniques are important landmarks. LÄS MER

  5. 4. Characterisation of brain electrodes for ablative neurosurgery

    Författare :Ola Eriksson; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Stereotactic ablative neurosurgery with radio frequency current is regularly performed on patients with movement disorders, for instance Parkinson's disease. Even though the technique has been used for ablation in the brain for almost 50 years, nobody has suggested a standardised way of testing the electrodes used for ablative surgery. LÄS MER

  7. 5. Irreversible electroporation in the liver

    Författare :David Stillström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: Malignant tumours in the liver are divided into primary liver cancers and liver metastases. Among primary liver cancers, hepatocellular carcinoma (HCC) accounts for 75-85% and is globally the fourth most common cause of cancer related death. Colorectal cancer (CRC) is the second most common cause of cancer related death. LÄS MER