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Measurement of the dose deposition characteristics of x‐ray fluoroscopy beams in water
Author(s) -
Fetterly Kenneth A.,
Gerbi Bruce J.,
Alaei Parham,
Geise Richard A.
Publication year - 2001
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1344206
Subject(s) - imaging phantom , fluoroscopy , percentage depth dose curve , ionization chamber , materials science , x ray , dosimetry , nuclear medicine , absorbed dose , water equivalent , mockup , optics , physics , medicine , nuclear physics , ion , composite material , quantum mechanics , meteorology , snow , ionization
The purpose of this study was to characterize the x‐ray dose distribution of fluoroscopy beams by measuring their percent depth dose curves and lateral dose profiles in a water phantom. Percent depth dose curves were measured near the surface with an Attix parallel plate chamber and deep within the water phantom with a Farmer‐type cylindrical chamber. Percent depth dose curves were compared to published data where applicable. Lateral dose profiles were measured at depths of 2, 5, 10, and 15 cm in phantom with a Farmer chamber. Pulsed, 50 mA x‐ray beams with peak tube potentials of 60, 80, 100, and 120 kV and half value layers of 1.89, 2.52, 3.20, and 4.09 mm Al, respectively, were investigated.