ENCAPSULATED LIQUID-CRYSTALS AS PROBES FOR REMOTE THERMOMETRY

被引:6
作者
FRANKLIN, KJ
BUIST, RJ
DENHARTOG, J
MCRAE, GA
SPENCER, DP
机构
[1] HLTH SCI CTR,MR RES LAB,WINNIPEG R3E 0Z3,MANITOBA,CANADA
[2] DUKE UNIV,MED CTR,DURHAM,NC 27710
关键词
D O I
10.3109/02656739209021780
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
A temperature probe based on the magnetic resonance properties of an encapsulated liquid crystal has been investigated. Large changes in magnetic resonance signals occur as the liquid crystal undergoes a phase transition from an anisotropic (nematic) to the isotropic liquid. The low latent heat of such phase transitions allows for rapid phase changes during a hyperthermia treatment. Transition temperatures can be tailored by adding suitable compounds such as analogues of the liquid crystal or various solvents. Encapsulation is required to maintain the integrity of the liquid crystal, particularly for applications in vivo. Results of preliminary studies designed to demonstrate the technical feasibility of the concept are presented.
引用
收藏
页码:253 / 262
页数:10
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