title: Does the use of additional X-ray beam filtration during cine acquisition reduce clinical image quality and effective dose in cardiac interventional imaging?
abstract: The impact of spectral filtration in digital ('cine') acquisition was investigated using a flat panel cardiac interventional X-ray imaging system. A 0.1-mm copper (Cu) and 1.0-mm aluminium (Al) filter added to the standard acquisition mode created the filtered mode for comparison. Image sequences of 35 patients were acquired, a double-blind subjective image quality assessment was completed and dose-area product (DAP) rates were calculated. Entrance surface dose (ESD) and effective dose (E) rates were determined for 20- and 30-cm phantoms. Phantom ESD fell by 28 and 41 % and E by 1 and 0.7 %, for the 20- and 30-cm phantoms, respectively, when using the filtration. Patient DAP rates fell by 43 % with no statistically significant difference in clinical image quality. Adding 0.1-mm Cu and 1.0-mm Al filtration in acquisition substantially reduces patient ESD and DAP, with no significant change in E or clinical image quality.
authors.affiliation: Division of Medical Physics, University of Leeds, Room 8.001 Worsley Building, Clarendon Way, Leeds LS2 9JT, UK.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: Davies
authors.affiliation: Division of Medical Physics, University of Leeds, Room 8.001 Worsley Building, Clarendon Way, Leeds LS2 9JT, UK a.j.gislason@leeds.ac.uk.
authors.forename: Amber J
authors.initials: AJ
authors.lastname: Gislason-Lee
authors.affiliation: Division of Medical Physics, University of Leeds, Room 8.001 Worsley Building, Clarendon Way, Leeds LS2 9JT, UK.
authors.forename: Arnold R
authors.initials: AR
authors.lastname: Cowen
authors.affiliation: Division of Medical Physics, University of Leeds, Room 8.001 Worsley Building, Clarendon Way, Leeds LS2 9JT, UK.
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Kengyelics
authors.affiliation: Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK.
authors.forename: Michael
authors.initials: M
authors.lastname: Lupton
authors.affiliation: Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK.
authors.forename: Janet
authors.initials: J
authors.lastname: Moore
authors.affiliation: Leeds General Infirmary, Great George Street, Leeds LS1 3EX, UK.
authors.forename: Mohan
authors.initials: M
authors.lastname: Sivananthan
mesh_terms: D002932:Cineangiography / Q000379:methods*; D004311:Double-Blind Method; D006801:Humans; D019047:Phantoms, Imaging; D011446:Prospective Studies; D011829:Radiation Dosage; D011835:Radiation Protection; D011856:Radiographic Image Enhancement / Q000379:methods*; D015641:Radiography, Interventional / Q000379:methods*; D014963:X-Ray Intensifying Screens