Abukhodair, Felwa - RadStream: An interactive visual display of radiology workflow for delay detection in the clinical i...

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This thesis has been submitted to the Library for purposes of graduation, but needs to be audited for technical details related to publication in order to be approved for inclusion in the Library collection.
Term: 
Summer 2018
Degree: 
Ph.D.
Degree type: 
Thesis
Department: 
School of Interactive Arts and Technology
Faculty: 
Communication, Art & Technology
Senior supervisor: 
Christopher Shaw
Thesis title: 
RadStream: An interactive visual display of radiology workflow for delay detection in the clinical imaging process
Given Names: 
Felwa
Surname: 
Abukhodair
Abstract: 
Given the high caseload most radiology departments face on a daily basis, workflow optimization becomes a necessity to avoid delays and poor health outcomes. This requires detailed analysis of workflow data to identify problem areas in the process. Analysis of the clinical imaging process demands an understanding of temporal intervals and temporal event sequences and relationships. Working with radiology staff, we seek to provide a tool to help monitor and improve radiology department workflow in order to increase efficiency and productivity and ensure the delivery of timely clinical imaging reports. In this thesis, I present RadStream: a web-based retrospective, exploratory, interactive data visualization tool that provides a comprehensive overview of the radiology department’s daily activities. I worked closely with radiology staff to analyze the department workflow and classify the analytical tasks required by domain experts in order to inform the design of the tool. Together, we abstracted the steps involved in the clinical imaging process. We also identified factors affecting the workflow (such as personnel, machine availability, and resources) and noted the relationship between the different factors as it plays an important role in increasing productivity. RadStream depicts the steps involved in the process of clinical imaging and shows the flow of processes from one step to the next. The visual representation emphasizes the time intervals between the different steps and uses colour coding to denote the status of a process (on time, acceptably late, late) in compliance with standard radiology turnaround times (TATs). The main focus of RadStream is on monitoring performance with special attention to duration, delays, and compliance with standard TATs. RadStream was evaluated by radiology staff using hospital data and real scenarios to evaluate its effectiveness, efficiency, and usability. The initial feedback received was very promising. And based on results collected from the evaluation studies, I sensed a general acceptance and excitement about the system as a quality assurance tool. I have also collected some constructive feedback to build upon for future releases. Finally, I reflect on lessons l learned from iteratively designing RadStream, and present design guidelines for the design of visual analytics tools for health care.
Keywords: 
temporal visualization; workflow visualization; Sankey diagram; visual analytics in health care; design study; qualitative research
Total pages: 
291