In-situ temperature monitoring in NMR machines with a prototype in-fibre Bragg grating sensor system
In-situ temperature monitoring in NMR machines with a prototype in-fibre Bragg grating sensor system
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DOI：
10.1364/ofs.1997.ofb7
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发表时间：
1997-10
期刊：
影响因子：
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通讯作者：
Y. Rao;B. Hurle;D. Webb;D. Jackson;L. Zhang;I. Bennion
中科院分区：
文献类型：
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作者：
Y. Rao;B. Hurle;D. Webb;D. Jackson;L. Zhang;I. Bennion
对于医疗温度测量，小型，可靠和廉价的热电偶和热敏电阻设备已经在市场上销售多年，并且仍然在实践中广泛使用。然而，由于这些传感器是电活性的，因此它们不适合用于许多医疗应用中，特别是在与NMR机器相关联的高磁场中，其中需要测量人体中的温度分布以用于诊断目的。近年来，已经报道了一系列微型光纤医用温度传感器，其中一小部分已经成功商业化。一般来说，这些传感器都是点式传感器，只能提供人体内小体积的温度读数，而不能提供人体内的温度分布。虽然这些点传感器的无源多路复用是可能的，但由于探头尺寸的限制，在实践中难以实现。
For medical temperature measurements small, reliable and inexpensive thermocouple and thermistor devices have been commercially available for many years and are still widely used in practice. However, as these sensors are electrically active they are not appropriate for use in a number of medical applications, in particular, in high magnetic fields associated with NMR machines in which temperature profiling in the human body is needed to be measured for diagnosis purposes. A range of miniature fibre-optic medical temperature sensors have been reported in recent years and a small number have been successfully commercialised. Generally speaking, these sensors are all point sensors which can only provide temperature readings over a small volume in the body rather than temperature distribution within the body. Although passive multiplexing of these point sensors is possible it is difficult to achieve in practice due to limitations on the probe size.