Anna University EC2021 MEDICAL ELECTRONICS April May 2015 Question Paper

Anna University Chennai

B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2015.

Sixth Semester

Electronics and Communication Engineering

EC2021 MEDICAL ELECTRONICS

(Regulation 2008/2010)

PART-A

1. Define resting potential and action potential.
2. Give the ECG signal characteristics.
3. Which flow meters are used to measure pulsatile flow of blood?
4. Draw lung volume diagram.
5. What is radio pill? Give its two uses.
6. What is meant by Bradycardia and Tachycardia?
7. Distinguish radiographic and fluorographic techniques.
8. What are the isotopes used in Alpha and Beta radiation?
9. Write the physiological effects of electricity.
10. Name the laser commonly used for ophthalmic application. Why?

PART-B

11.(a) Classify and explain bio-potential electrodes with neat diagram.

 Or

(b) (i) Draw and explain different types of lead configuration in ECG and gives its significances.
(ii) Explain the working of a multi-channel EEG recording machine.

12.(a) (i) With sketch explain how the PCO2 of blood is measured.
 (ii) Describe the working principle of an electrophoresis apparatus give its applications.

 Or

(b) (i) Explain electromagnetic blood flow meter.
 (ii) Explain ausculatory blood pressure measurement.

13.(a) (i) What is Defibrillator? With block diagram explain the operation of synchronized DC Defibrillator.
 (ii) Distinguish Internal and External Pacemaker.

 Or

(b) Explain the signal channel and Multi-channel Bio telemetry system with neat diagram.

14.(a) Classify the X-Ray and with neat diagram explain the function XRay machine.

 Or

(b) (i) Explain the use of Radio Isotopes in diagnosis.
 (ii) Draw the gamma camera and explain the principle.

15.(a) (i) What is Leakage current? Explain the impact of leakage in cardiac patient and how it can be avoided?
 (ii) list the therapeutic application of laser.

 Or

(b) with neat sketch explain the following:
 (i) Surgical Diathermy
 (ii) Endoscopy unit.

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