Effect of laser beam on temperature distribution on artificial cylindrical shaped hard tissue bones

2nd International Conference on Advanced Materials

Al-Akhras, M-Ali H.^1 ; Qaseer, Mohammad-Khair^1 ; Albiss, B.A.^1 ; Gezawa, Umar S.^1

Department of Physics, Bio-Medical Physics Laboratory, Jordan University of Science and Technology, P.O. Box 3030, Irbid

22110, Jordan^1

关键词: Cylindrical shapes;    Hard tissues;    Horizontal cylinders;    Laser therapy;    Linear variation;    Maximum variations;    Time variations;    Tissue damage;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/305/1/012013/pdf
DOI  :  10.1088/1757-899X/305/1/012013

来源: IOP

【 摘 要 】

Samples from fresh lamb chest bones were made in cylindrical shapes to study the time variation of temperature T as functions of the cylindrical radius and depth when its front surface exposed to a laser beam of 110Mw power and 642nm wavelength. The laser beam was directed at the center of the front surface of the horizontal cylinder. The measurements were done in vacuum and at atmospheric pressure. Our data reveal the linear variation of T with time, followed by a gradual increase before it reaches a plateau value at higher time. This sort of behavior independent of the radius or the depth where the temperature was measured. Moreover, the maximum variation occurs on the front surface where the laser beam was hitting and diminishes gradually with depth deep inside the cylinder. Data at atmospheric pressure showed less changes in temperature. The temperature distribution in bone due to laser irradiation is very important for a rational use of laser therapy as well as in the surgery to minimizes the thermal tissue damage.