Introduction: Breast cancer is the most common cancer among women in the world and in Iran. Sono- photodynamic therapy is a new modality for cancer treatment. In this method, a sensitizer that activates by ultrasound and light produces photochemical and synchochemical activities, thereby causing the toxicity and destruction of tumor cells. The use of dual frequency ultrasound...

today laser has a lot of usage in medicine and dentistry. in the field of dentistry, laser is used in soft tissue surgery, sterilization of canals (in root canal therapy) and in restorative dentistry laser is used for cavity preparation, caries removal, sealing the grooves (in preventive dentistry), etching enamel and dentin, composite polymerization and removal of tooth sensitivity. the use of...

Photostress has to be considered during optical micromanipulation of gametes. Ultraviolet light, including low-energy UVA (32-400 nm) radiation, as well as high-intensity near infrared (NIR) laser radiation may induce cell damage. A total number of 580 light-exposed sperm cells were studied in single-cell photostress experiments. Low-power (1.5 mW, 5.3 W/cm2) UVA exposure with 365 nm radiation ...

Laser-plasma accelerators can produce ultra-short electron bunches in the femtosecond to picosecond duration range, resulting very high peak dose rates comparison with clinical accelerators. This unique characteristic motivates their possible application radiation biology studies elucidate effect of and peculiar temporal structures on biological response living cells, which might improve differ...

This work describes a new approach to the delivery of light in deeper tissues, through a silk filament that is implantable, biocompatible, and biodegradable. In the present work, silkworm gut fibers (SGFs) of Bombyx mori L., are made by stretching the silk glands. Morphological, structural, and optical properties of the fibers have been characterized and the stimulatory effect of red laser ligh...