M.Sc. (Semester III) Examination Nov/Dec-2018
Electronics
MEDICAL INSTRUMENTATION
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Use of Logtable and calculator is allowed.
Draw neat and labeled diagram wherever necessary.
Q.1 Choose correct alternative for the following 14
The is the middle layer of the heart.
pericardium myocardium
epicardium endocardium
A decrease in resting membrane potential difference is called
depolarization polarization
resting state repolarization
Normal EEG frequency range is
50-500Hz 0.5-50Hz
0.05-5Hz 1-200Hz
MRI stands for
mechanical resonance imaging magnetic resonance imaging
mutually related imaging magnetic resultant imaging
is an instrument for recording the electrical activity of the heart.
ECG EEG
EMG VCG
The sensitivity of an ECG is set at mm per mV.
15 10
20 1
Which diagnostic image is the result of ultrasound technology?
radiograph echocardiogram
angiogram all of these
Silver-silver chloride electrodes are normally prepared by
electrolyte non-electrolyte
electrolysis none of these
All arteries of the body flow
to the liver to the brain
away from the lungs away from the heart
10) Electrode paste
increase contact impedance equates contact impedance
reduces contact impedance absorbs contact impedance
11) Optical fiber sensors are electrically
active passive
active as well as passive cannot be determined
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12) The chemical reaction of glucose with oxygen is catalyzed in the presence of

glucose oxidase monoglucosecarbodase
glucosedioxidase biglucose oxidase
13) Within slice signal localization in MRI is performed with
tomography iterative reconstruction
fourier transform selective excitation
14) The material of the needle electrode are normally prepared by
stainless steel copper
nickel alloy
Q.2 Answer the following (any four) 08
Draw the engineering diagram of the heart.
What is the meaning of polarization?
Give the medical use of the radioisotopes.
Define blood pressure
Give the principles of computer tomography.
Write note on (any two) 06
Explain the measurement of heart rate
Write a note on temperature measurement
What are the uses of Wireless Sensor Network technology in central
monitoring system.
Q.3 Answer the following (any two) 08
With suitable diagram describe the operation of the potentiometric
sensor.
Describe the blood flow meters.
With principle of operation, describe the electromyography.
Answer the following question (any one) 06
What do you mean PQRS plot? Explain in detail.
Explain the bedside patient monitoring system.
Q.4 Answer the following (any two) 10
Describe the cardio-vascular system.
Explain the electrode-tissue interface.
Explain the basis of diagnostics radiology.
Answer the following (any one) 04
Explain the skin contact impedance.
What is the general architecture of the ray machine?
Q.5 Answer the following (any two) 14
With suitable diagram, describe in details the MRI method.
Explain the blood-glucose sensors.
Explain in detail the central monitoring system.