[Evaluation of the density of a normal parotid gland by computerized tomography].
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Biomedical subjects
Publications and source records attributed to G Gozzi.
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The ultrasonic scalpel has been used for some time in surgery in tissue with a predominantly cellular component since it can be used selectively on the parenchymatous component while respecting the vasculo-stromal component. On the basis of their earlier experience and using a versatile ultrasonic device currently utilised in plastic surgery, the authors subjected a series of animal organs to ultrasonic action at a frequency of 19800 Hz and with an output of 65 Watt. The aim of the study was to evaluate the widest potential in terms of efficiency and safety for the use of a ultrasonic scalpel on a vast range of animal parenchyma (batches of Sprague-Dawley rats). The authors' comments and histological results highlight the striking efficiency of this form of energy in the dissolution of parenchyma while respecting the organ's vascular and stromal components.
On the basis of previous reports by other authors which have become increasingly numerous over the past years, we have focused our attention on the use of ultrasonic energy in the medical field to resolve medical and cosmetic problems, such as lipodystrophy and diffuse subcutaneous adiposity. In order to standardise the dissolution times of human subcutaneous adipose tissue we used a ultrasonic generator operating at a constant frequency of 19800 Hz, but which was able to emit a range of power from 0 to 100 Watt. The ultrasounds were applied (according to a scale of power) using a titanium probe to fat samples with a volume of 1 cm until each sample had fully dissolved. This allowed the levels of greatest working efficiency to be established for the most commonly used probes.