W1-2-60-1-6
JOMO KENYATTA UNIVERSITY
OF
AGRICULTURE AND TECHNOLOGY
University Examinations 2017/2018
END OF SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN COMMUNITY HEALTH AND DEVELOPMENT
ICH 2103: MEDICAL PHYSICS II
DATE: AUGUST 2018 TIME: 2 HOURS
SECTION A: 48 MARKS
1. Explain the meaning of the following terms as used in medical physics;
(i) Diagnostic imaging
(ii) Medical imaging protocol
(iii) Ionizing radiation. [6 marks]
2. Compare and contrast between fluoroscopy and CT scan as two main diagnostic modalities. [6 marks]
3. With the aid of a well labelled diagram, explain the production of X-rays for medical imaging. [6 marks]
4. What makes lead zirconate titanate the best piezoelectric crystal of choice for the production of diagnostic ultrasonic waves for medical imaging. [6 marks]
5. Describe briefly the principle and operation of magnetic resonance imaging (MRI) imaging modality in disease diagnosis. [6 marks]
6. Describe the application of the ALARA principle in radiological risk management in medical imaging facilities. [6 marks]
7. Explain SIX parameters that affect the quality of a radio-diagnostic image formed during diagnosis. [6 marks]
8. Explain the success of medical imaging in revolutionizing health care provision in Kenya today. [6 marks]
SECTION B: 22 MARKS
9. Ionizing radiation application possess serious risks both to the staff and patients. Discuss how these risks are mitigated against in the practice of medical imaging.
10. Discuss the principle, production and operation of ultrasound as a key medical imaging modality in diagnosis in Kenya.
11. Discuss in detail the medical views for the production of radiographs for the following sections;
(i) Cervical region
(ii) Thoracic region
(iii) Ribs
(iv) Lumber region
