System upgrade on philips allura fd20 angiography systems: effects on patient skin dose and static image quality

Fluoroscopically guided procedures might be highly irradiating for patients, possibly leading to skin injuries. In such a context, every effort should be done to lower patient exposure as much as possible. Moreover, patient dose reduction does not only benefit to the patient but also allows reducing staff exposure. In this framework, Philips Healthcare recently introduced a system upgrade for their angiography units, called ‘AlluraClarity’. The authors performed air kerma rate measurements for all available fluoroscopy modes and air kerma per frame measurements for the digital subtraction angiography protocols, along with subjective spatial resolution and low-contrast detectability assessments using a standard QA phantom. Air kerma reductions ranging from 25.5 to 84.4 % were found, with no significant change in image quality when switching from a standard operating mode to an upgraded version. These results are confirmed by the comparison of actual patient exposures for similar procedures.

Source: Radiation Protection Dosimetry - June 6, 2016 Category: Radiology Authors: Ryckx, N., Sans-Merce, M., Meuli, R., Zerlauth, J.-B., Verdun, F. R. Tags: Paper Source Type: research