Category: Transient Plane Source
Author(s): George Corner, Jiang You, Jing Gao, Sandy Cochran, Zhihong Huang
Keywords: bovine serum albumin phantoms, concentration, egg white phantoms, high intensity, specific heat capacity, Temperature, Thermal Conductivity, Thermal Diffusivity, Thermal properties testing, Tissue-mimicking phantoms, Transient plane source (TPS) method, ultrasound-induced thermal coagulative necrosis
Abstract: High intensity focused ultrasound (HIFU) is a new noninvasive method for treating certain tumors. Tissue mimicking phantoms are used to test HIFUs because it provides real time visualization of HIFU induced lesion evolution, and can calibrate the HIFU transducers. This study investigates the thermophsyical properties of egg white phantoms at room temperature, and varying concentrations of egg white. Measurements of thermal conductivity, diffusivity, and specific heat were taken using a transient plane source (TPS) method. It was found that there was an increasing trend for thermal conductivity, and diffusivity, with respect to egg white concentration. The specific heat of the egg white phantoms decreased with increasing egg white concentration. All of these values correlated well with that of literature, with slight differences due to differences in the egg white phantom compositions.
Reference: International Journal of Thermophysics, 33, 3 (2012) 495-504