Numerical Simulation of Heating Characteristics in a Microwave T-Prong Antenna for Cancer Therapy
نویسندگان
چکیده
Abstract—This research is presented with microwave (MW) ablation by using the T-Prong monopole antennas. In the study, threedimensional (3D) finite-element methods (FEM) were utilized to analyse: the tissue heat flux, temperature distributions (heating pattern) and volume destruction during MW ablation in liver cancer tissue. The configurations of T-Prong monopole antennas were considered: Three T-prong antenna, Expand T-Prong antenna and Arrow T-Prong antenna. The 3D FEMs solutions were based on Maxwell and bio-heat equations. The microwave power deliveries were 10 W; the duration of ablation in all cases was 300s. Our numerical result, heat flux and the hotspot occurred at the tip of the T-prong antenna for all cases. The temperature distribution pattern of all antennas was teardrop. The Arrow T-Prong antenna can induce the highest temperature within cancer tissue. The microwave ablation was successful when the region where the temperatures exceed 50°C (i.e. complete destruction). The Expand T-Prong antenna could complete destruction the liver cancer tissue was maximized (6.05 cm3). The ablation pattern or axial ratio (Widest/length) of Expand TProng antenna and Arrow T-Prong antenna was 1, but the axial ratio of Three T-prong antenna of about 1.15.
منابع مشابه
Coaxial Slot Antenna Design for Microwave Hyperthermia using Finite- Difference Time-Domain and Finite Element Method
Hyperthermia also called thermal therapy or thermotherapy is a type of cancer treatment in which body tissue is exposed to high temperatures. Research has shown that high temperatures can damage and kill cancer cells, usually with minimal injury to normal tissues. Otherwise, ablation or high temperature hyperthermia, including lasers and the use of radiofrequency, microwaves, and high-intensity...
متن کاملHeating Performances of Array Applicator for Interstitial Microwave Hyperthermia: Numerical Simulation and Clinical Trial
INTRODUCTION In recent years, various types of medical applications of microwaves have widely been investigated and reported [1]. In particular, minimally invasive microwave thermal therapies using thin applicators are of a great interest. They are interstitial microwave hyperthermia [2] and microwave coagulation therapy (MCT) [3] for medical treatment of cancer, cardiac catheter ablation for v...
متن کاملGeneration of Controllable Heating Patterns by Two Types of Thin Microwave Antennas for Interstitial Microwave Thermal Therapy
In recent years, various types of medical applications of microwaves have widely been investigated and reported [1]. In particular, minimally invasive microwave thermal therapies using thin coaxial antennas are of a great interest. They are interstitial microwave hyperthermia [2] and microwave coagulation therapy (MCT) [3] for medical treatment of cancer, cardiac catheter ablation for ventricul...
متن کاملComputer simulation and temperature measurement for MR hyperthermia therapy using coaxial-slot antenna
Introduction Hyperthermia therapy is commonly used for tumor treatment that already has been widely investigated. The principle of hyperthermia therapy employs the clear difference in heat sensitivity of normal cells and tumor cells at 42°C to 43°C and above. This difference is used for selective killing of only the tumor cells. Recently, hyperthermia therapy combined with magnetic resonance im...
متن کاملHigh Temperature Hyperthermia in Breast Cancer Treatment
Globally, breast cancer is the most common type of cancer among women, which comprises 23% of all female cancers that are newly diagnosed in more than 1.1 million women each year. Over 411 000 deaths result from breast cancer annually; this accounts for over 1.6% of female deaths from all causes. Hyperthermia also called thermal therapy or thermotherapy is a type of cancer treatment in which bo...
متن کامل