TAILIEUCHUNG - Mid-IR Laser Applications in Medicine

Attempts to use lasers in medicine are so numerous and, historically, so diverse, that it proves difficult to describe them all in this chapter. Many laser ideas were introduced experimentally, evaluated clinically and later abandoned, giving way to other concepts in accordance with the availability of laser sources or delivery technologies. This process continues today. The present collection of laser applications thus describes the laser innovations at a given point in time only. A fundamental trend stands out with regard to laser sources: laser equipment is reduced in complexity, maintenance requirements, and costs, thus giving way to more widespread use | Mid-IR Laser Applications in Medicine Benedikt Jean and Thomas Bende Experimental Ophthalmic Surgery University Eye Hospital Tubingen Derendingerstr. 41 72072 Tubingen Germany Abstract. This chapter reviews medical applications of a variety of mid-infrared lasers. These applications are based on strong absorption of laser light in human tissue due to the presence of naturally occurring chromophores specific and unspecific absorbers. Medically relevant laser-tissue interactions are described. Experimental data obtained with free electron lasers describe photoablation quantitatively in the mid-IR as well as collateral adverse effects. Feedback technologies for online therapy control are presented they enhance the selectivity of the laser-tissue interaction. Typical medical and surgical applications in gynecology otorhinolaryngology neurosurgery dermatology urology dental surgery ophthalmology and cardiovascular surgery are briefly summarized. 1 Introduction Attempts to use lasers in medicine are so numerous and historically so diverse that it proves difficult to describe them all in this chapter. Many laser ideas were introduced experimentally evaluated clinically and later abandoned giving way to other concepts in accordance with the availability of laser sources or delivery technologies. This process continues today. The present collection of laser applications thus describes the laser innovations at a given point in time only. A fundamental trend stands out with regard to laser sources laser equipment is reduced in complexity maintenance requirements and costs thus giving way to more widespread use. This may lead to new emerging fields - such as laser welding or tissue molding - exemplifying this trend. IR solid-state lasers and their future development are predicted to play a central role as the prevailing laser sources of the future possibly followed by semiconductor lasers. Also notable is another demand-driven trend towards more

• Y khoa - Dược
• ablation efficiency
• absorber
• aqueous outflow
• artherosclerotic plaques
• carbonization
• cataract surgery
• cavity preparation