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In medicine, ablation is the removal of a part of biological tissue, usually by surgery. Surface ablation of the skin ( dermabrasion , also called resurfacing because it induces regeneration ) can be carried out by chemicals (chemoablation), by lasers ( laser ablation ), by freezing ( cryoablation ), or by electricity ( fulguration ).
The actual ablation depth and surface shape will be slightly different from the theoretical Munnerlyn formula. Many factors must be taken into account at the time of the surgery. The sex, age, and race of the patient, and such things as the barometric pressure and ambient humidity will change slightly the required ablation.
Preparing a cow for udder surgery in field conditions: the physical restraint with a set of ropes is necessary next to xylazine tranquilisation A cat spay. Veterinary surgery is surgery performed on non-human animals by veterinarians, whereby the procedures fall into three broad categories: orthopaedics (bones, joints, muscles), soft tissue surgery (skin, body cavities, cardiovascular system ...
A related parameter, duty cycle, is defined as the ratio of the ON time to the period (the time of a single ON-OFF cycle). In the terminology of electrical engineering , the process of altering this ratio to achieve an average amplitude, instead of altering the amplitude directly is called pulse-width modulation .
Cryoablation has been explored as an alternative to radiofrequency ablation in the treatment of moderate to severe pain in people with metastatic bone disease.The area of tissue destruction created by this technique can be monitored more effectively by CT than RFA, a potential advantage when treating tumors adjacent to critical structures.
Such procedures have been grouped together under the technical term 'mutilatory' by the Royal College of Veterinary Surgeons in a report describing the reasons for their being conducted and their welfare consequences, [1] and by others. [2] [3] The term mutilatory generally connotes some form of disfigurement or even maiming. There are multiple ...
Multiphysics simulation is related to multiscale simulation, which is the simultaneous simulation of a single process on either multiple time or distance scales. [ 3 ] As an interdisciplinary field, multiphysics simulation can span many science and engineering disciplines.
[18] [4] In any case, all studies agree that the cell death is an induced one with the cells dying over a varying time period of hours to days and does not rely on local extreme heating and melting of tissue via high energy deposition like most ablation technologies (see radiofrequency ablation, microwave ablation, High-intensity focused ...