Junila J, Kaarela O, Mäkäräinen H, Waris T
Department of Surgery, Oulu University Central Hospital, Finland.
Acta Radiol. 1993 Nov;34(6):622-4.
Since it is difficult and time-consuming to monitor the formation of a demarcation line in frostbite by visual inspection only, thermography was used to study experimental freezing injuries of the rabbit ear. In 8 rabbits, anesthetized with ketamine hydrochloride and xylazine hydrochloride, frostbite was induced by pressing the bottom of a glass bottle 2 cm in diameter, filled with liquid nitrogen against the shaved ear skin. Thermography was performed on both ears after 2, 24, and 48 hours, and one and 3 weeks. At 2 to 48 hours the frost-bitten area was clearly warmer than the surroundings, after one week there were ill-defined diffuse cold spots in the injured area, and after 3 weeks a cold area had become clearly demarcated with a warm zone between the cold area and the surroundings. Thermography is an easy, noninvasive method for monitoring thermal changes after experimental frostbite, but its clinical value is as yet unresolved.
由于仅通过肉眼检查来监测冻伤中分界线的形成既困难又耗时，因此使用热成像技术研究兔耳的实验性冻伤。对8只用盐酸氯胺酮和盐酸赛拉嗪麻醉的兔子，通过将一个直径2厘米、装有液氮的玻璃瓶底部按压在剃毛后的耳部皮肤上诱导冻伤。在2小时、24小时、48小时、1周和3周后对双耳进行热成像检查。在2至48小时，冻伤区域明显比周围环境温暖，1周后受伤区域出现边界不清的弥漫性冷斑，3周后一个寒冷区域已清晰界定，在寒冷区域与周围环境之间有一个温暖带。热成像技术是一种用于监测实验性冻伤后热变化的简便、非侵入性方法，但其临床价值尚未明确。
