The Actual Role of Iterative Reconstruction Algorithm Methods in Several Saudi Hospitals As A Tool For Radiation Dose Minimization of Ct Scan Examinations

Abstract

Haney Alsleem,1 Abdulrahman Tajaldeen,1 Abdulrahman Almutairi,2 Hussain Almohiy,3 Ebtisam Aldaais,1 Rayan Albattat,2 Mousa Alsleem,4 Elfatih Abuelhia,1 Osama Abdalla Mabrouk Kheiralla,1 Ahmed Alqahtani,5 Salem Alghamdi,6 Rowa Aljondi,6 Renad Alharbi7 1Department of Radiological Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia; 2Medical Imaging Department, King Fahad Specialist Hospital, Dammam, Saudi Arabia; 3Radiological Sciences, King Khalid University, Abha, Saudi Arabia; 4College of Dentistry, King Faisal University, Alahsa, Saudi Arabia; 5Radiology Department, King Saud Medical City, Riyadh, Saudi Arabia; 6Department of Applied Radiologic Technology, University of Jeddah, Jeddah, Saudi Arabia; 7Department of Radiology, Specialized Medical Complex, Jeddah, Saudi ArabiaCorrespondence: Haney Alsleem, Email [email protected]: Iterative reconstruction algorithm (IR) techniques were developed to maintain a lower radiation dose for patients as much as possible while achieving the required image quality and medical benefits. The main purpose of the current research was to assess the level and usage extent of IR techniques in computed tomographic (CT) scan exams. Also, the obligation of practitioners in several hospitals in Saudi Arabia to implement IR in CT exams was assessed.Material and Methodology: The recent research was based on two studies: data collection and a survey study. Data on the CT scan examinations were retrospectively collected from CT scanners. The survey was conducted using a questionnaire to evaluate radiographers’ and radiologists’ perceptions about IR and their practices with IR techniques. The statistical analysis results were performed to measure the usage strength level of IR methods.Results and Discussions: The IR strength level of 50% was selected for nearly 80% of different CT examinations and patients of different ages and weights. About 46% of the participants had not learned about IR methods during their college studies, and 54% had not received formal training in applying IR techniques. Only 32% of the participants had adequate experience with IR. Half of the participants were not involved in the updating process of the CT protocol.Conclusion: The results indicate that the majority of radiographer and radiologist at four different hospitals in Saudi Arabia have no explicit or understandable knowledge of selecting IR strength levels during the CT examination of patients. There is a need for more training in IR applications for both radiologists and radiographers. Training sessions were suggested to support radiographers and radiologists to efficiently utilize IR techniques to optimize image quality. Further studies are required to adjust CT exam protocols effectively to utilize the IR technique.Keywords: computed tomography, CT, filter back projection, FBP, iterative reconstruction algorithms, IR, as low as reasonably achievable, ALARA

Keywords

• computed tomography
• ct. filter back projection
• fbp. iterative reconstruction algorithms
• ir. as low as reasonably achievable
• alara.