ABSTRACT
This study was designed to evaluate the status of light beam diaphragm in government and private radiology departments in Enugu state. This was conducted using questionnaire and a quality assurance test method to check the beam alignment and collimator accuracy of x-ray equipment in radiology centers in Enugu state. The main objectives were to assess the status of LBDs, to assess if misalignment increases with increase in field size, to assess if radiographers in Enugu state apply collimation and to assess how often light beam diaphragm test is conducted. A sample of 19 radiology departments and 19 questionnaires were used for the study. The result showed that 21% have a percentage misalignment value below 2% in both AC and AL, while 79% had misalignment either across or along or in both directions greater than 2%. The greatest percentage misalignment across and along the film were 10.6% and 5.8% respectively. On the other hand, the least percentage misalignment across and along the film were 0.8% and 0.4% respectively. Results also showed an increase in misalignment of the x-ray field and light field with an increase in the light field. This was correlated using inferential statistics. A majority of the radiographers apply collimation as a form of radiation protection while there is a poor practice of Quality assurance in this area with majority (74%) not conducting the test at all. This indicates unacceptable status of LBDs in enugu and the implication of this in image quality and radiation protection is noted as an undesirable development as it evidently contributes an unwelcome quantity to the radiation dose to the patient population.
TABLE OF CONTENTS
Abstract
CHAPTER ONE
1.0 Introduction
1.1 Background of Study
1.2 Statement of Problems
1.3 Research Objectives
1.4 Research Question
1.5 Research Hypothesis
1.6 Scope of Study
1.7 Significance of study
1.8 Limitation of study
1.9 Definition of terms
CHAPTER TWO
2.0 Literature Review
CHAPTER THREE
3.0 Research methodology
3.1 Research Design
3.2 Population of study
3.3 Sampling Design and Procedure
3.4 Data Collection Instrument
3.5 Administration of Data Collection Instrument
3.6 Methods of data analysis
CHAPTER FOUR
4.0 Data Presentation and Analysis
4.1 Data Presentation
4.2 Test of Hypothesis
CHAPTER FIVE
5.0 Summary, Conclusion and Recommendation
5.1 Summary
5.2 Conclusion
5.3 Recommendation
References
Questionnaire