Entrance surface dose during three-dimensional imaging with a flat-panel detector angiography system

Journal of Vascular and Interventional Radiology : JVIR
Shigeru SuzukiTakahiro Haruyama

Abstract

To measure the entrance surface dose (ESD) during three-dimensional (3D) imaging of a phantom and evaluate a method to estimate ESD with use of dose-area product (DAP) values. The present study used an angiographic unit with a digital flat-panel system for 3D imaging. DAP values and ESDs were evaluated on square phantoms with thicknesses of 12.0, 15.0, 18.0, 21.0, and 25.0 cm with use of 5-second acquisitions. ESDs were measured on the lateral and posterior surfaces of the square phantom. DAP values and ESDs were also evaluated on a human-shaped phantom with various table heights, with ESDs measured on the phantom surfaces on the posterior centerline, right middle axillary line, and their midpoint. The posterior ESDs were 7.3 mGy, 12.1 mGy, 18.8 mGy, 26.9 mGy, and 38.5 mGy for the square phantoms with thicknesses of 12 cm, 15 cm, 18 cm, 21 cm, and 25 cm, respectively. The DAP and the posterior ESDs were correlated (r = 0.998, P < .0001). The regression equation was D = DAP x 0.0014, where D was the posterior ESD (mGy). For the human-shaped phantom, the posterolateral ESD tended to be slightly larger than the posteromedial ESD, with the differences less than 10%. The estimated doses based on this relationship were almost equal t...Continue Reading

References

Jan 1, 1994·Journal of Vascular and Interventional Radiology : JVIR·L K WagnerR A Geise
Jun 1, 1996·Archives of Dermatology·D A LichtensteinL T Gilead
May 1, 1997·Journal of the American Academy of Dermatology·G T Nahass
Sep 17, 1999·Radiographics : a Review Publication of the Radiological Society of North America, Inc·R A ParryB R Archer

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Citations

Jan 22, 2011·EuroIntervention : Journal of EuroPCR in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology·Patricia J M BestUNKNOWN Society for Cardiovascular Angiography & Interventions' Women in Innovations (WIN) Group
Jan 19, 2011·Heart, Lung & Circulation·Patricia J M BestUNKNOWN Women in Innovations (WIN) group of the Society of Cardiac Angiography and Intervention
Nov 10, 2010·Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions·Patricia J M BestUNKNOWN Society for Cardiovascular Angiography & Interventions' Women in Innovations (WIN) group

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