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Which of the following sensor is used for Endoscopic imaging?(a) thermal sensors(b) optic fiber sensors(c) chemical sensors(d) pressure sensorsThis question was addressed to me in an online interview.This intriguing question comes from Transmission of Analog Physiological Signals Over Telephone topic in chapter Biomedical Telemetry of Biomedical Instrumentation

Answer»

Right OPTION is (b) OPTIC fiber SENSORS

Easy explanation: Optical fibre sensors are non-electrical and hence are free from electrical interference usually associated with ELECTRONICALLY BASED sensors. Optic sensors are used for endoscopic imaging. They are suitable for telemetry applications as the bulk of the instrumentation can be at a reasonable distance from the patient.



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