1Ali Barah, 1Ahmad L F Yasin, 1Mohammed Khader, 1Jimmy Rauras, 1Ryan Tibigin, 1Ernaldo Tibigin, 1Tareq Mohd Alshalalfa, 1Malina Yahiya, 1Louis Anton Belmonte, 1Ahmad Omar
1Hamad Medical Corporation, Doha, Qatar
To assess radiation dose reduction during thoracic and abdominal Angioembolization (AE) procedures using an optimized imaging protocol with lower pulse width and lower dose per frame.
Material(s) and Method(s):
Radiation dose data for 88 adult patients who underwent different thoracic and abdominal AE procedures were retrospectively analyzed. This included splenic, renal, hepatic, gastrointestinal, mesenteric, uterine, iliac, bronchial and pulmonary arterial AE. Thirty seven patients underwent AE using the baseline fluoroscopic and angiographic protocol, this includes pulse width of 50 ms and dose per frame of 0.81 uGy/fr, while 51 patients underwent AE after implementing an optimized protocol, which includes pulse width of 20 ms and dose per frame of 0.54 uGy/fr, in otherwise identical angiography suites. Entrance skin dose (ESD), total fluoroscopy time, and image exposure number were collected for each procedure.
Patients undergoing AE using the new fluoroscopy protocol had significant lower ESD indicators than patients for whom baseline settings were used. Mean ESD decreased by 31% from 370 mGy (median: 290, range: 38-1683 mGy) to 253 mGy (median: 178, range: 39-828 mGy; P <0.05).No significant degradation of image quality was identified.
Significant reduction in patient radiation dose can be achieved with use of this optimized image acquisition protocol while maintaining adequate image quality.