Cochin University of Science and Techology (CUST) 2006-8th Sem B.Tech Electronics and Communications Engineering (Supplementary) tember , EC 805 (D) BioMedical Instrumentation - Question Pape

Time:

: 3 Houn

Maximum Marks

: 100

I.

()

(b)

What is resting membrane potential of Urge nerve fiber? Explain bow it is maintained b the nerve.

Write notes on:

(i) Action Potential (H) Neamst Potential OR

What re microclectrodes? Explain its constructional details.

(10)

(10)

II.

(*)

(10)

(b)

List tbe various types of ECO electrodes. Explain any one in detail.

(10)

Ill

()

Describe tbe different lead configurations in ECG.

(10)

(b)

Discuss the need of isolation in biomedical recorders. Explain any one isolation method. (10) OR

IV.

()

What are evoked potential? Draw and explain the block diagram of an evoked potential recorder.

(10)

(b)

List the various recorders used in biomedical instruments. Explain any one in detail.

(10)

V.

()

Explain the power sources and types of electrodes used in implantable pacemakers.

(10)

(b>

Which Is the natural pacemaker of the heart and why?

(*>

(0

What are the pacing modes normally used in pacemakers?

OR

(6)

VI.

()

What is a defibrillator? Explain the implantable defibrillator with the help of a block diagram.

(10)

(b)

Explain the different modes of operation of solid state surgical unit.

(5)

(c)

What is an ultrasonic diathenny unit? Write its applications.

(3)

vn.

()

(b)

With the help of a block diagram explain the bask pulse -edto ultrasound scanner. What an the different types of scans in ultrasound teaming? Explain the application of each ooe of them.

OR

(10)

(10)

VUI.

()

Explain the thermographic imaging system with tbe help of a block diagram.

(10)

(b)

What b the principle of operation of MR! scanner? What is Bloch equation?

(10)

IX.

()

With tbe help of a block diagram expiate a single channel ECG telemetry system.

00)

<b)

Explain the application of biotelemetry in various fields of medicine. OR

(10)

X.

()

(b)

What are the different types of modulation techniques used in biotelemetry? Explain any one with the help of circuit diagram

Exp lam an tmphntabk telemetry system for blood pressure and blood flow measurement.

(10)

(10)