Applicability of Nanoparticle Coating in Bone Density Evaluation Using Gaussian-Weighted Linear Frequency-Modulated Thermal Wave Imaging

Active infrared thermography (IRT) helps address the constraints of conventional bone density diagnostic tactics, such as various bones requiring different testing methods, unilateral diagnosis, radiation exposure, testing duration, etc. Although active IRT provides promising diagnostic outcomes, it has limited depth penetration into the body, resulting in limited resolution. Despite the fact that numerous post-processing techniques are utilized to boost the intensity penetration of modulated thermal excitation, it is by no means restricted. Consequently, we tend to employ a nanoparticle coating approach in this study. We have coated iron oxide and titanium oxide nanoparticles with two promising excitations, linear frequency modulated (LFM) and Gaussian-weighted linear frequency- modulated (GWLFM). This research aimed to determine the effect of nanoparticle coating in conjunction with GWLFM as it offers increased compression qualities, sensitivity, and resolution. This is accomplished by constructing bone LFM models with varying bone densities and forms. As in the current study, nanoparticles and GWLFM are utilized to attain high depth resolution. Using signal-to-noise ratio, we evaluated diverse coating outcomes with LFM and GWLFM (SNR). In conjunction with GWLFM, titanium- and iron-based nanoparticle coatings are capable of enhancing the depth penetration for bone density measurement, according to our analysis.