Effects of Nd:YAG laser photoradiation on intra-abdominal tissues: a histological study of tissue damage versus power density applied
| Autor: | M. Y. Sankar, Stephen N. Joffe, Kim Brackett |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Male
Pathology medicine.medical_specialty Necrosis Pancreatic pseudocyst Spleen Dermatology Biology Lesion Abdomen Pancreatic Pseudocyst medicine Animals Pancreas Lasers Histology Rats Inbred Strains Phototherapy medicine.disease Rats medicine.anatomical_structure Liver Pancreatitis Surgery Rabbits medicine.symptom |
| Zdroj: | Lasers in surgery and medicine. 6(2) |
| ISSN: | 0196-8092 |
| Popis: | Liver, spleen, and pancreas were subjected to laser photoradiation of 50- to 100-Watt power levels. Samples were evaluated by light microscopy at 0 hours and 7, 14, and 21 days. Four zones of cellular damage were visible in liver and pancreas: coagulum, cavitation, acidophilia, and transition. Only the first three zones were clearly visible in the spleen. Mean lateral tissue penetration was 3.1 mm in liver, 3.3 mm in spleen, and 1.0 mm in pancreas. No significant increase in lateral penetration occurred with increasing power. Normal healing was observed in liver and spleen. Pancreatitis was found in all samples at 7 days postoperatively. At power levels of 80 W or less, recovery was observed. Above 80 W, pancreatic pseudocysts and necrosis led to death of the animals. |
| Databáze: | OpenAIRE |
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