Lasers for Medical Applications: Diagnostics, Therapy and by Helena Jelínková

By Helena Jelínková

Lasers have a large and turning out to be variety of functions in medication. Lasers for clinical functions summarises the wealth of modern learn at the ideas, applied sciences and alertness of lasers in diagnostics, treatment and surgery.

Part one offers an outline of using lasers in drugs, key rules of lasers and radiation interactions with tissue. to appreciate the extensive range and consequently the big attainable selection of those units for a particular prognosis or therapy, the respective forms of the laser (solid country, gasoline, dye, and semiconductor) are reviewed partly . half 3 describes diagnostic laser tools, for instance optical coherence tomography, spectroscopy, optical biopsy, and time-resolved fluorescence polarization spectroscopy. these equipment aid medical professionals to refine the scope of involvement of the actual physique half or, for instance, to specify the level of a tumor. half 4 concentrates at the healing purposes of laser radiation particularly branches of drugs, together with ophthalmology, dermatology, cardiology, urology, gynecology, otorhinolaryngology (ORL), neurology, dentistry, orthopaedic surgical procedure and melanoma treatment, in addition to laser coatings of implants. the ultimate bankruptcy contains the security precautions with which the employees operating with laser tools has to be familiar.

With its distinctive editor and overseas staff of members, this significant ebook summarizes overseas achievements within the box of laser purposes in medication some time past 50 years. It presents a helpful contribution to laser drugs by means of notable specialists in medication and engineering.

  • Describes the interplay of laser gentle with tissue
  • Reviews all kinds of laser utilized in medication: good country, fuel, dye and semiconductor
  • Describes using lasers for diagnostics

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Extra resources for Lasers for Medical Applications: Diagnostics, Therapy and Surgery (Woodhead Publishing Series in Electronic and Optical Materials)

Example text

In different internal configurations and at various energy levels Ei, where i = 0, 1, 2. . At every time, at the i-th energy level (with energy Ei) there exists a certain number of particles (Ni) out of the whole set of N. The statistical meaning of particle counts (Ni) per unit volume is called a population or occupancy of the i-th energy level. The sum of the population of all levels in the quantum system must be equal to N. If the quantum system does not interact with the surroundings (it is an isolated system), no macroscopic changes exist, and the system is in so-called thermodynamic equilibrium.

13). 2 Attainment of a particular laser material population inversion depends on many factors, namely, on the usually rather complicated structure of the active material energy level as such. To explain the pumping procedure, the two-level approximation of the quantum system is not sufficient, and therefore it is necessary to use a view in which higher excited levels are taken into account. Obviously they are compressed into one ‘pumping level’. Then so-called three-level or four-level models are defined (Fig.

A poor choice of laser may lead to null results or even to tissue damage. Therefore, a fundamental knowledge of laser technology is necessary before a laser is selected for a particular medical treatment. After 50 years of laser radiation application in medicine, the background of the interaction between radiation and tissue is understood. Because these facts are common to all the medical treatments presented in this book (for therapeutics as well as for diagnostics), the relation of laser radiation properties to particular medical treatments is given in this first chapter.

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