Subject Code: 2170303
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018Subject Name: Medical Imaging techniques
Time: 10:30 AM TO 01:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Why is tungsten used as a target material in X-ray tube? 03
(b) Write the comparisons between fluoroscopy and radiography. 04
(c) Explain in detail the fundamental interactions between x-rays and matter. 07
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Q.2 (a) Define the characteristic x-rays. 03
(b) Draw and Explain the electrical circuit of X ray generator. 04
(c) What is an image intensifier tube? Draw and explain the construction and working of image intensifier tube. 07
OR
(c) Explain functions of beam restrictor. Draw and explain collimator. 07
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Q.3 (a) State and explain Clinical applications of Thermography. 03
(b) Draw and explain xeroradiography. 04
(c) Write a note on nuclear radiation detectors. 07
OR
Q.3 (a) What is piezoelectric effect? Give the example of piezoelectric material. 03
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(b) Explain Gamma camera in detail. 04(c) Write a detail note on SPECT. 07
Q.4 (a) Describe the characteristics of ultrasound wave. 03
(b) What types of detectors are used in thermal imaging system? Explain the infrared detector in detail. 04
(c) Explain in detail spatial encoding for MRI study. 07
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OR
Q.4 (a) What are the basic components in NMR imaging? 03
(b) Explain T1 relaxation time in context of MRI. 04
(c) Write a note on the generation of CT scanner. 07
Q.5 (a) Describe the biological effects of ultrasound imaging techniques. 04
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(b) Give detailed characteristics of ultrasound transducer beam design. 07OR
Q.5 (a) Explain propagation of ultrasound wave with necessary schematic. 03
(b) What is Thermal Imaging? Explain Infrared Thermography in detail. 04
(c) Explain A-mode scan of Ultrasonic Imaging system 07
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Date: 15/11/2018
Total Marks: 70
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