By R. E. Anderson, J. E. Boggan, L. J. Cerullo, M. C. Chan, G. J. Dohrmann, M. S. B. Edwards, V. A. Fasano, J. M. Gilsbach, A. Harders, R. M. Ikeda, P. J. Kelly, E. R. Laws Jr., G. Lee, T. Letardi, D. T. Mason, C. R. Neblett, R. W. Rand, A. Renieri, I. L. Ri
Since the advent of electrosurgery the thoughts of surgical procedure at the fearful method have gone through extra advancements (bipolar coagulation, microscope), whether the process used to be no longer considerably transformed. this day, laser represents a brand new "discipline", because it deals a brand new approach of acting all simple maneuvers (dissection, demolition, hemostasis, vessel sutures). moreover, laser bargains the potential for a unique maneuver, particularly relief of the quantity of a tumoral mass via vaporization. Its software isn't really limited to standard neurosurgery yet extends additionally to stereotactic and vascular neurosurgery. Laser surgical procedure has additionally motivated the anesthesiologic innovations. even as new instrumentation has been brought: CUSA ultrasonic aspiration, echotomography, and Doppler flowmeter. i've got had the opportunity to make use of those new applied sciences all at a time and feature come to the realization that we face the sunrise of a brand new method which has already proven its validity and shortage of inconveniences, and whose item is to extend the precision of neurological surgical procedure. The technological improvement continues to be happening, and a few advancements are to be foreseen. Laser scalpel is splitting the preliminary laser surgical procedure into NO contact and contact surgical procedure with laser. As new instrumentarium might be constructed, a variable and tunable beam turns into on hand. for instance, in many years unfastened Electron Laser will extra upload to the development during this field.
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Wien: F. Molden Verlag. 2. Beck, O. , 1980: The use of Neodymium: YAG and the CO 2 laser in neurosurgery. Neurosurg. Rev. 3, 261. 3. , 1917: Zur Quantentheorie der Strahlung. Phys. Z. 18, 12. 4. Fasano, V. , Lombard, G. , 1979: New technologies in neurosurgery. ), pp. 66-72. Tel Aviv: OT-PAZ. 5. Fasano, V. , Ponzio, R. , 1982: Observations on the simultaneous use of CO 2 and Nd: Y AG laser in neurosurgery. Lasers Surg. Med. 155. 6. Jako, G. , 1972: Laser surgery of the vocal cords. An experimental study with carbon dioxide laser.
12. Patel, C. K. , 1968: High power carbon dioxide lasers. Sci. Am. 219, 22. 13. Polany, T. , Davis, T. , 1970: A CO 2 laser for surgical research. Med. BioI. Eng. 8, 541. 14. Rosomoff, H. , 1965: Effect oflaser on brain and neoplasm. Surg. Forum 16, 431. 15. , 1970: Experimental studies with carbon dioxide laser as a neurosurgical instrument. Med. BioI. Eng. 8, 549. 16. , 1978: Laser surgery of brain tumors. No shinkei Geka 9, 743. Laser Physic VICTOR A. FASANO Institute of Neurosurgery, University of Turin (Italy) Contents 1.
M . Gilsbach and A. =Isec Fig. 13. Anterior communicating aneurysm with generally high and irregular flow pattern with normal vessel calibers as a sign of a reduced peripheral resistance. A common finding in acute aneurysm surgery. 5 kHz) I , . t. , feeding arteries draining veins after exclusion lkHzLlsec Fig. 14. Flow pattern of an intracerebral arteriovenous malformation. Depending on the diameter and flow volume in the arteries, an accelerated to irregular flow with high diastolic components is found.