Notes in 11 Fluoroscopy physics

To Subscribe, use this Key

Status	Last Update	Fields
Published	05/01/2023	Imaging Physics: Fluoroscopy Physics{{c1::Fluoroscopy}} is an imaging modality that allows real-time x-ray viewing of a patient with high temporal res…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsFuoroscopy is based on an x-ray {{c1::image intensifier*}} coupled to a still/video {{c1::camera}}.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, if the field of view is reduced, the reduced field of view is projected onto the entire {{c1::outp…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, reducing the field of view by a factor of {{c1::2}}x results in an image that is {{c2::4}}x dimmer
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, reducing the field of view by a factor of {{c1::2}}x results in {{c2::4}}x increase in skin exposu…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, reducing the exposed area from 10 cm → 7 cm would increase patient entrance air kerma by ~{{c1::2}…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsContinuous fluoro runs at current of {{c1::1}}-{{c1::5}} mA (typically {{c2::3}} mA), resulting in a very {{c4::lo…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsCompared to a standard chest X-ray exposure of 5 μGy, each fluoro frame has {{c1::500}}x fewer incident photons.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsFor fluoroscopy, there is a federal regulatory limit of {{c2::100}} mGy/min entrance air kerma.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsFor fluoroscopy, federal regulations will allow high-dose fluoro with audible/visual alarms at {{c1::200}} mG…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, source-to-skin distance is {{c1::inversely::directly/inversely}} proportional to do…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, filtration is {{c1::inversely::directly/inversely}} proportional to dose.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, filtration removes {{c1::low-energy X-rays}} that would be absorbed.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, removing the grid {{c1::reduces::increases/reduces}} dose (used in peds), at the risk of {{c2…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, dose spreading (moving the beam around) {{c1::reduces::increases/reduces}} the maximum skin d…
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn continuous fluoroscopy, the skin dose rate is about {{c1::10}}–{{c1::30}} mGy/min.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, the maximum exposure rate is {{c1::100}} mGy/min or {{c2::200}} mGy/min in high-level mode.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, at the maximum permissible rate in high-level mode, it can deliver {{c1::2}} Gy per 10 min.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, larger patients are {{c1::more::more/less}} susceptible to skin injury.
Published	05/01/2023	Imaging Physics: Fluoroscopy PhysicsIn fluoroscopy, magnification {{c1::increases::increases/reduces}} dose.
Status	Last Update	Fields