Pochaczevsky R, Pillari G, Feldman F
AJR Am J Roentgenol. 1982 Apr;138(4):717-23. doi: 10.2214/ajr.138.4.717.
A new thermographic technique for the diagnosis of deep venous thrombosis, liquid crystal contact color thermography using naturally occurring cholesteric crystals is described. Cholesteric crystals have the property of changing colors in consistent, predictable patterns in response to local temperature changes. The technique is reliable and reproducible. It has also been rendered simple by embedding the liquid crystals in elastic, flexible sheets. The sheets are inflated and readily adapt and contour to extremities of various sizes and shapes. Preliminary results have shown excellent correlation with ascending phlebography. The two methods were in agreement in 90% of cases with no false-negative liquid crystal thermograms. The technique shows promise as a noninvasive screening study for the diagnosis of deep venous thrombosis in high risk patients.
本文介绍了一种用于诊断深静脉血栓形成的新型热成像技术——使用天然胆甾型晶体的液晶接触式彩色热成像技术。胆甾型晶体具有响应局部温度变化以一致、可预测的模式改变颜色的特性。该技术可靠且可重复。通过将液晶嵌入弹性、柔性薄片中，该技术也变得简单。这些薄片被充气后能轻松适应各种大小和形状的肢体并与之贴合。初步结果显示与上行静脉造影有极好的相关性。在90%的病例中，两种方法结果一致，且液晶热成像图无假阴性。该技术有望作为一种非侵入性筛查方法用于诊断高危患者的深静脉血栓形成。
