title: [Accuracy estimation of non-invasive X-ray output analyzer].
abstract: This study estimated the accuracy of an X-ray analyzer by comparing it with an ionization chamber and a tube voltage current meter, and investigated whether it was usable as a substitute for a reference meter for output measurements for quality control purposes. The X-ray output analyzer used was a Piranha (RTI Electronics), a non-invasive instrument. The two subjects of measurements were as follows: the tube voltage, exposure, and half-value layer used in ordinary X-ray radiographic system equipment, and the exposure and half-value layer in X-ray equipment for mammographic systems. The results for a conventional radiographic system showed the error rates for tube voltage, exposure, and half value layer to be within ±1.0%, ±1.8%, and ±4.3%, respectively. The Piranha is not influenced by the dependence of the beam quality in a range of the tube voltage in clinical use. In X-ray equipment for mammographic system results, error rates for exposure and half value layer were ±2.2% and within ±4.0%, respectively. We conclude that it is possible to use the Piranha as an alternative reference meter for quality control of X-ray equipment for typical radiographic and mammographic systems.
authors.affiliation: Department of Radiological Technology, Nagoya Daini Red Cross Hospital.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Ioka
authors.forename: Eiji
authors.initials: E
authors.lastname: Ariga
authors.forename: Naomi
authors.initials: N
authors.lastname: Nishio
authors.forename: Takashi
authors.initials: T
authors.lastname: Ooshima
mesh_terms: D008327:Mammography / Q000295:instrumentation; D011786:Quality Control; D011859:Radiography / Q000295:instrumentation*; D011874:Radiometry / Q000295:instrumentation*