R05321102-laser-and-fiber-optics-in-medicine

Set No. 1

Code No: R05321102

III B.Tech Supplimentary Examinations, Aug/Sep 2008 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) Classify lasers based on the optical medium and discuss characteristics of each. [8+8] (b) Explain the penetration effect of UV-IR laser radiation into biological tissue. 2. (a) Differentiate between the light and image transmission in the fiber bundle & How the fibers are stacked to retrieve the original image that was transmitted. [8+8] (b) Discuss the construction details of a fiber bundle with reference to coherance. 3. (a) What are laser photo coagulators and explain their function.

[8+8]

(b) List out the various causes for corneal ulcers. 4. (a) What is a LASER and discuss its applications in dermatology?

[8+8]

(b) What are the skin conditions that can be treated using lasers? 5. What is bronchoscope, discuss it application for pediatric use. 6. (a) Explain in detail the use of CO2 laser in surgery.

[16] [8+8]

(b) Explain in detail the use of ND-YAG laser in surgery. 7. Explain different types of lasers used in dentistry.

[16]

8. Explain in detail the different hazards occur during laser treatment with respect to Eye? [16] ⋆⋆⋆⋆⋆

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Set No. 2

Code No: R05321102

III B.Tech Supplimentary Examinations, Aug/Sep 2008 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) Compare the various types of laser with respect to their wavelength, output power and its mode of operation. [8+8] (b) Discuss the advantages and disadvantages of continous, pulsed and quasicontinous types of laser output. Explain the importance of each mode. 2. (a) Explain the merits and demerits of coherent and incoherent fiber bundles [8+8] (b) Define snell’s Law and explain how it is applicable to optical fibers. 3. (a) Explain the various tools to test the accuracy of lasers.

[8+8]

(b) Describe the role played by the laser photo coagulators in treating the diabetic retinopathy. 4. (a) What is a LASER and discuss its applications in dermatology?

[8+8]

(b) What are the skin conditions that can be treated using lasers? 5. (a) Give a detailed description of Gastro scopes? (b) What are the uses of endoscopes in medicine? 6. (a) Discuss the types of electrodes used in laser surgery in detail

[8+8] [8+8]

(b) Discuss the various types of reference electrodes used in surgery. 7. (a) With a neat sketch give a description about induced carrier inhibition density during dental treatment. (b) Explain the difference between soft tissue and hard tissue of teeth.

[10+6]

8. Give the MPE values of Exposure limits for the ocular and skin regarding the safety standards? [16] ⋆⋆⋆⋆⋆

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Set No. 3

Code No: R05321102

III B.Tech Supplimentary Examinations, Aug/Sep 2008 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) List all the properties of lasers and explain in detail.

[8+8]

(b) Explain the principle of operation of ruby laser. 2. (a) Describe the various types of optical sources used in fiber optics in detail. How the amplication is achived in the fiber optics. [8+8] (b) Discuss any four types of medical applications using fiber optics in detail. 3. (a) What are the various eye diseases that can be treated using lasers?

[8+8]

(b) What is a laser refractor and how is it used to detect the differences in refraction? 4. (a) What is a LASER and discuss its applications in dermatology?

[8+8]

(b) What are the skin conditions that can be treated using lasers? 5. (a) Explain different types of endoscopes? (b) What are the different optical sensors used in medicine? 6. (a) Explain the uses of fiber optics in surgery.

[8+8] [8+8]

(b) Discuss cutting, coagulation, fulguration and dessication in the field of surgery. With neat sketch for each. 7. Explain different types of lasers used in dentistry.

[16]

8. Give the MPE values of Exposure limits for the ocular and skin regarding the safety standards? [16] ⋆⋆⋆⋆⋆

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Set No. 4

Code No: R05321102

III B.Tech Supplimentary Examinations, Aug/Sep 2008 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) List all the properties of lasers and explain in detail.

[8+8]

(b) Explain the principle of operation of ruby laser. 2. Discuss the significance of endoscopy and explain in detail the various components of endoscopy. [16] 3. (a) Explain in detail the symptoms of corneal ulcers. (b) Discuss the application of Argon laser in treating corneal ulcers. 4. (a) What is a LASER and discuss its applications in dermatology?

[8+8] [8+8]

(b) What are the skin conditions that can be treated using lasers? 5. What is the use of colonoscopy in Gastro-Intestinal Endoscopy.

[16]

6. Explain the use of laser in Neurosurgery.

[16]

7. Explain different types of lasers used in dentistry.

[16]

8. Explain in detail about the classification of laser hazards?

[16]

⋆⋆⋆⋆⋆

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