A Systematic Multidisciplinary Process for User Engagement and Sensor Evaluation: Development of a Digital Toolkit for Assessment of Movement in Children With Cerebral Palsy.

To describe and critique a systematic multidisciplinary approach to user engagement, and selection and evaluation of sensor technologies for development of a sensor-based Digital Toolkit for assessment of movement in children with cerebral palsy (CP). A sequential process was employed comprising three steps: Step 1: define user requirements, by identifying domains of interest; Step 2: map domains of interest to potential sensor technologies; and Step 3: evaluate and select appropriate sensors to be incorporated into the Digital Toolkit. The process employed a combination of principles from frameworks based in either healthcare or technology design.

Measurement of HVL on Fluoroscopy Units.

The total filtration of a fluoroscopy x-ray tube assembly may be deduced from the half value layer (HVL) of the x-ray beam at a specified tube voltage using published data tables. The HVL is usually measured by placing increasing thicknesses of Al plates between the focus and a dosimeter, and measuring the output while keeping the kV constant. However, on many of the newer fluoroscopy units, it is not possible to set the tube potential manually.

Measurement of HVL on fluoroscopy units.

The total filtration of a fluoroscopy x-ray tube assembly may be deduced from the half value layer (HVL) of the x-ray beam at a specified tube voltage using published data tables. The HVL is usually measured by placing increasing thicknesses of Al plates between the focus and a dosimeter, and measuring the output while keeping the kV constant. However, on many of the newer fluoroscopy units, it is not possible to set the tube potential manually.