Designing a user interface for control of contrast fluid on the next generation Interventional X-Ray systems

Interventional radiology uses X-Ray imaging to help guide the physician when inserting catheters, wires, and other small instruments and tools into the body. The physician uses this technology to diagnose and/or treat conditions in almost any part of the body. To visualize vessels and to improve the quality of the images made using X-Ray images, contrast materials (often in the form of fluids) are used. Contrast fluid can cause allergic reactions and kidney failure for the patient and X-Ray radiation brings a chance of developing cancer or damaging ovarian or sperm cells. Not only for the patient, but also for the medical staff which has to work with the equipment. Goal is to use as less contrast fluid and X-Ray radiation as possible. The contrast fluid can be injected by a manually controlled device, called a contrast fluid injector. Research shows that using a contrast fluid injector reduces the amount of contrast fluid being used on a patient with a reduction of about 21% in comparison with manual injection, while image quality is improved. Besides, fluoroscopy time (time in which real-time moving images of the internal structures of a patient are being made whilst the physician inserts catheters etc.) can be reduced significantly with 57% due to shortening of fluoroscopy shots and a lower need for repetitions. This master thesis describes the development process of the user interface design for control of contrast fluid, integrated with the (next generation) X-Ray system user interface, which was executed in service of Philips Healthcare, business unit Interventional X-Ray. After a thorough analysis of the workflow and usability problems, a concept was developed. This concept was evaluated with end users (laboratory assistants) and applicants within Philips Healthcare, who have worked as laboratory assistants in the past. Results of this evaluation were translated into adjustments to the concept. Recommendations were written for further development within Philips Healthcare.

Subject

User Interface
Contrast Fluid
Injector
Interventional X-Ray
Healthcare

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