1.1 Introduction
Radiation safety is defined as the set of principles, guidelines, and protective measures designed to minimize exposure to ionizing radiation for both patients and healthcare workers, particularly those who are occupationally exposed such as radiographers (World Health Organization, 2016). It is a fundamental aspect of medical imaging practice, aimed at ensuring that the benefits of diagnostic procedures outweigh the potential risks associated with radiation exposure (2007).
The use of ionizing radiation in diagnostic centers has significantly improved the accuracy of disease diagnosis and patient management. Techniques such as X-ray imaging, computed tomography (CT), and fluoroscopy have become indispensable tools in modern medicine. However, the increased reliance on these technologies has also led to a corresponding rise in occupational exposure among radiographers, who operate and manage these imaging systems on a daily basis (ICRP, 2007).
As a prelude to other parts of this study, this chapter will discuss the background upon which this study was initiated, the statement of problems that led to this study, the Aim and Objectives of the study. Others are significance of the study, scope of work, research hypothesis and questions, limitation of the study and definition of terms.
1.2 Background of Study
The application of ionizing radiation in medical diagnosis has evolved significantly over the years, becoming an essential component of modern healthcare systems. Diagnostic imaging techniques such as X-rays, computed tomography, and fluoroscopy are widely used for accurate disease detection and treatment planning. According to World Health Organization (2016), exposure to ionizing radiation, even at low doses, carries potential health risks, especially when accumulated over time. The organization reported that healthcare workers, including radiographers, are among the most exposed occupational groups due to the nature of their work. This highlights the importance of adequate knowledge and strict adherence to radiation protection principles in clinical practice. Similarly, the International Commission on Radiological Protection (2007) asserted that effective radiation protection is based on three fundamental principles: justification of procedures, optimization of protection, and application of dose limits.
In the context of radiography, knowledge of radiation safety involves understanding the physical properties of radiation, its biological effects, and the practical measures required to reduce exposure. Okeji et al. (2019) stated that radiographers who possess adequate knowledge of radiation protection are more likely to implement safety measures effectively, thereby reducing the risk of occupational hazards. The authors affirmed that continuous education and training play a significant role in enhancing both knowledge and practice among radiographers.
Arogundade et al. (2020) reported that many radiographers in Nigerian healthcare facilities demonstrate inconsistent use of protective equipment and limited adherence to safety protocols. The authors contended that factors such as inadequate training, lack of monitoring, and insufficient provision of protective devices contribute to these shortcomings. Furthermore, regulatory frameworks play an essential role in promoting radiation safety in healthcare settings.
The Nigerian Nuclear Regulatory Authority (2018) stated that all facilities using ionizing radiation must comply with established safety standards, including the use of personal protective equipment, monitoring devices, and routine safety audits. The authority affirmed that compliance with these regulations is necessary to protect both healthcare workers and patients from unnecessary radiation exposure. However, enforcement of these regulations is sometimes weak, particularly in resource-limited settings, where institutional challenges may hinder effective implementation.
According to the International Atomic Energy Agency (2014), modern imaging systems are capable of delivering higher radiation doses if not properly managed. The agency reported that proper training and adherence to safety protocols are essential to ensure that these technologies are used safely and effectively. In addition to knowledge and regulatory compliance, the attitude of radiographers towards radiation safety also plays a significant role in determining their level of practice. Okeji et al. (2019) asserted that complacency and negligence can negatively affect the implementation of safety measures, even when knowledge is adequate. The authors contended that fostering a positive safety culture within healthcare institutions is crucial for improving compliance with radiation protection guidelines.
At Federal Medical Centre, Umuahia, diagnostic imaging services are routinely performed, exposing radiographers to varying levels of ionizing radiation. As a tertiary healthcare institution, the facility is expected to maintain high standards of radiation safety in line with national and international guidelines. However, like many healthcare institutions in developing regions, challenges related to knowledge gaps, resource limitations, and enforcement of safety protocols may still exist.
This study is set against the backdrop of the need to evaluate and improve radiation safety practices among radiographers, particularly in diagnostic centers such as Federal Medical Centre, Umuahia, where the balance between diagnostic benefits and radiation risks must be carefully maintained.
1.3 Statement of Problems
Investigation revealed that some radiographers demonstrate gaps in their understanding of fundamental radiation protection principles such as time, distance, and shielding. According to the World Health Organization (2016), inadequate knowledge of radiation safety among healthcare workers is associated with increased occupational risks and unnecessary exposure to ionizing radiation (Arogundade et al., 2020). On the other hand, even where knowledge exists, the actual practice of radiation safety measures is sometimes suboptimal. Observations in similar healthcare settings indicate that the use of protective equipment such as lead aprons, thyroid shields, and dosimeters is not always consistent, often due to factors such as negligence, workload pressure, or limited availability of resources (Arogundade et al., 2020).
Furthermore, poor attitudes toward radiation safety among some radiographers also contribute to the problem. Studies have shown that complacency, overconfidence, and underestimation of radiation hazards negatively influence adherence to safety protocols (Okeji et al., 2019). In addition, there is limited empirical data specific to diagnostic centers in Umuahia, particularly at Federal Medical Centre, Umuahia, which makes it difficult to fully understand the extent of these challenges within the local context. Without such data, efforts to design targeted interventions and policies remain inadequate and less effective (NNRA, 2018). It is against this backdrop that this study seeks to examine the knowledge and practice of radiation safety among radiographers in diagnostic centers, with particular focus on Federal Medical Centre, Umuahia.
1.4 Aim and Objectives of Study
The aim of this study is to evaluate the knowledge and practice of radiation safety among radiographers in diagnostic centers.
To achieve this aim, the study has the following objectives:
- To assess the level of knowledge of radiation safety among radiographers.
- To examine the extent of radiation safety practices among radiographers in diagnostic procedures.
- To identify factors influencing the application of radiation safety measures among radiographers.
- To evaluate the availability and use of radiation protective equipment in diagnostic centers.
- To determine the relationship between knowledge of radiation safety and actual practice among radiographers.
1.5 Research Questions
The study came up with research questions so as to be able to ascertain the above stated objectives. The specific research questions for the study are stated below as follows:
- What is the level of knowledge of radiation safety among radiographers?
- What is the extent of radiation safety practices among radiographers in diagnostic procedures?
- What factors influence the application of radiation safety measures among radiographers?
- What is the level of availability and use of radiation protective equipment in diagnostic centers?
- What relationship exists between knowledge of radiation safety and actual practice among radiographers?
1.6 Research Hypotheses
In order to pursue the objective of this study, the following generalized statements have been designed to guide and aids in obtaining the result for the experiment to be conducted. For this work, the null hypothesis will be represented with H0 while the alternative hypothesis will be represented with hypothesis H1.
Hypothesis One
- H0: There is no significant relationship between knowledge of radiation safety and its practice among radiographers.
- H1: There is a significant relationship between knowledge of radiation safety and its practice among radiographers.
Hypothesis Two
- H0: There is no significant difference in radiation safety practices based on availability of protective equipment.
- H1: There is a significant difference in radiation safety practices based on availability of protective equipment.
Hypothesis Three
- H0: There is no significant influence of training on the knowledge of radiation safety among radiographers.
- H1: There is a significant influence of training on the knowledge of radiation safety among radiographers.
1.7 Significance of Study
It is believed that at the completion of the study, the findings will provide documented evidence on radiation safety knowledge and practice among radiographers in Federal Medical Centre, Umuahia. The research will also support enforcement of radiation protection standards by relevant regulatory bodies.
Furthermore, the study will benefit the Nigerian Nuclear Regulatory Authority by offering evidence for monitoring compliance with safety regulations. In addition, the research will benefit patients by promoting safer diagnostic procedures through improved radiation protection practices.
Lastly, the study will benefit academic researchers by contributing reliable data to existing literature on radiation safety in Nigeria.
1.8 Scope and Limitations of the Study
This study focuses on the knowledge and practice of radiation safety among radiographers working in diagnostic centers.
The study is limited to radiographers in Federal Medical Centre, Umuahia within Abia State, Nigeria, and focuses only on diagnostic imaging departments. It does not cover other healthcare institutions or therapeutic radiation practices.
The findings are therefore specific to the selected institution and may not be generalized to all healthcare facilities in Nigeria.
1.9 Definition of Terms
Radiation Safety:
Radiation Safety refers to the principles and protective measures used to minimize exposure to ionizing radiation for both healthcare workers and patients (World Health Organization, 2016).
Radiographers:
Radiographers are healthcare professionals trained to operate imaging equipment and perform diagnostic procedures that involve the use of radiation.
Ionizing Radiation:
Ionizing Radiation refers to high-energy radiation capable of removing tightly bound electrons from atoms, thereby causing biological damage (ICRP, 2007).
Diagnostic Centers:
Diagnostic Centers are healthcare facilities where medical imaging procedures such as X-rays and CT scans are performed for diagnosis.
Protective Equipment:
Protective Equipment includes devices such as lead aprons, thyroid shields, and dosimeters used to reduce radiation exposure.
Radiation Dose:
Radiation Dose refers to the amount of radiation energy absorbed by the body during exposure.
Occupational Exposure:
Occupational Exposure refers to radiation exposure received by workers as a result of their job responsibilities.
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