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Posted Date: 11 Jul 2008 Posted By: Sree.... Member Level: Platinum
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2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech LASER AND FIBER OPTICS IN MEDICINE Set No. 4 Question paper
Code No: RR411102 Set No. 4
IV B.Tech I Semester Regular Examinations, November 2006
LASER AND FIBER OPTICS IN MEDICINE
(Bio-Medical Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Describe what are the conditions required for laser action.
(b) Explain in detail the difference between temporal coherence and special co-
herence.
[8+8]
2. (a) Explain in detail the principles of photo chemical process using laser.
(b) Explain in detail the difference between micro diagnostic and macro diagnostic.
[8+8]
3. (a) Explain the biological function of a human cell.
(b) Describe how the cell structure can be investigated by using laser. [8+8]
4. (a) Explain the use of Argon laser in Gastroentrology.
(b) Explain in detail the uses of ND - YAG laser in Gastroentrology.
5. (a) With a neat block diagram explain analog modulation scheme for fiber optics
transmission.
(b) What do you mean by attenuation in optical fiber communication? What are
different types of loss or signal attenuation mechanism in fiber? [8+8]
6. (a) What are the uses of Nitrogen and Helium in CO2 laser?
(b) Explain in detail photo ablation for tumor and other tissue surgery. [8+8]
7. (a) Explain with neat sketch induced carrier inhibition density during treatment
of dental
(b) Explain difference between soft tissue and hard tissues of teeth. [8+8]
8. (a) What do you mean by laser Hazard.
(b) Explain in detail different protection standards adopted during the treatment
of laser.
[4+12]
1 of 1
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