Effect of Photobiomodulation Therapy in Patients With Hashimoto's Thyroiditis

Before each treatment session, the borders of the thyroid gland were marked with ultrasound by an endocrinology specialist. Eight target points (superior, mediolateral, inferior borders of the right and left thyroid lobes, right and left side of the isthmus) were demarked with a surgical pen. PMBT was applied to the marked areas on the thyroid gland, which were approximately 1 cm apart from each other.

In the sham PMBT group, the probe was placed similarly to the treatment group. The screen of the laser device was active; however, the energy was set to 0 J and the power to 0 Mw, and the same procedures were also performed.