Soria E, Paroski M W
Angiology. 1987 Feb;38(2 Pt 1):151-7. doi: 10.1177/000331978703800210.
Contact thermography using liquid crystals provides a simple, inexpensive method of evaluating carotid disease. It does not duplicate information provided by other noninvasive methods, because, whereas Dopplers give an indication of flow and degree of stenosis in the artery, thermography measures the actual hypoperfusion as demonstrated by diminished temperature in areas of the forehead supplied by branches of the ophthalmic artery. A 74-year-old man presented with bilateral carotid distribution TIAs. Carotid Dopplers and angiography revealed 99% occlusion of both internal carotid arteries. Contact thermography showed diminished temperature in the right supraorbital artery territory. The patient subsequently underwent carotid endarterectomy. Following induction of anesthesia but prior to carotid clamping, the patient became transiently hypotensive. Intraoperative EEG monitoring showed marked attenuation of the background rhythm on the right with preservation of background on the left. Normal rhythm was quickly restored with pharmacologic restoration of the blood pressure. This case illustrates the usefulness of thermography, which predicted the hemisphere in jeopardy when Dopplers and angiography showed equal bilateral disease.
使用液晶的接触式热成像提供了一种评估颈动脉疾病的简单、廉价方法。它不会重复其他非侵入性方法所提供的信息，因为，虽然多普勒检查能显示动脉中的血流和狭窄程度，但热成像测量的是实际的灌注不足，这表现为眼动脉分支所供应的前额区域温度降低。一名74岁男性出现双侧颈动脉分布区的短暂性脑缺血发作。颈动脉多普勒检查和血管造影显示双侧颈内动脉均有99%的闭塞。接触式热成像显示右侧眶上动脉区域温度降低。该患者随后接受了颈动脉内膜切除术。麻醉诱导后但在夹闭颈动脉之前，患者出现短暂性低血压。术中脑电图监测显示右侧背景节律明显减弱，左侧背景节律保留。通过药物恢复血压后，正常节律迅速恢复。该病例说明了热成像的有用性，当多普勒检查和血管造影显示双侧疾病程度相当时，热成像可预测处于危险中的半球。
