FEBRUARY 2017 Sub. Code: 1412
DIPLOMA IN RADIOLOGY IMAGING TECHNOLOGY
SECOND YEAR
PAPER II EQUIPMENTS, BASIC TECHNIQUES OF MODERN
IMAGING MODALITIES
Q.P. Code: 841412
Time Three Hours Maximum 100 Marks
Answer All questions.
I. Elaborate on: x 10 30)
1. What is the principle of ultrasound scan and describe the method of
production of ultrasound and their physical characteristics?
2. Explain the CR system.
3. First generation CT.
II. Write Notes on: (10 x 5 50)
1. Describe the MRI contrast studies.
2. CCD technology in DR system.
3. Define the acoustic impedance in US.
4. X-ray tube design in mammography.
5. Explain the digital radiography.
6. Types of magnet used in MRI scan.
7. Image quality in CT.
8. Explain in relaxation of MRI.
9. Describe the interaction of ultrasound with matter.
10. Explain the CR processing image methods.
III. Short Answers on: (10 x 2 20)
1. Types of pulse sequence in MRI.
2. Limitation of spiral CT.
3. CT define larmor frequency.
4. What is HU?
5. Piezoelectric effect.
6. Purpose of cathode ray tube in CT.
7. Type of DR system.
8. How are dense structures displayed in CT? How are less dense structure
displayed on CT?
9. Explain the compression paddle in mammography.
10. Purpose of amorphous silicon.