Abstract
Laser light is frequently used in the diagnosis and treatment of patients. As in
traditional treatments such as medication, bypass surgery, and minimally invasive ways, laser
treatment can also fail and present serious side effects. The true reason for laser treatment failure
or the side effects thereof, remains unknown. From the literature review conducted, and
experimental results generated we conclude that an optimal laser treatment for coronary artery
disease (named heart disease) can be obtained if certain critical parameters are correctly
measured and understood. These parameters include the laser power, the laser beam profile, the
fluence rate, the treatment time, as well as the absorption and scattering coefficients of the target
treatment tissue. Therefore, this paper proposes different, accurate methods for the measurement
of these critical parameters to determine the optimal laser treatment of heart disease with a
minimal risk of side effects. The results from the measurement of absorption and scattering
properties can be used in a computer simulation package to predict the fluence rate. The
computing technique is a program based on the random number (Monte Carlo) process and
probability statistics to track the propagation of photons through a biological tissue.