A survey of short-term and long-term stability of tube parameters in a mammography unit

Abstract

In order to set up a successful mammography screening program in the Republic of Srpska, a Siemens Mammomat 1000 X-ray machine was selected for analysis as the said mammography system is widely used in clinical practice. The variations in tube parameters (specific air kerma, high-voltage accuracy and reproducibility, linearity between exposure and dose exposure time) were monitored over a five-year period, from 2008 to 2012. In addition, due to observed daily fluctuations for chosen parameters, a series of measurements were performed three times a day within a single-month period (mainly October 2012). The goal of such an experimental set up is to assess short-term and long-term stability of tube parameters in the given mammography unit and to make a comparison between them. The present paper shows how an early detection of significant parameter fluctuations can help eliminate irregularities and optimize the performance of mammography systems. [Projekat Ministarstva nauke Republike Srbije, br. 171007]

Influence of electromagnetic and nuclear radiation in medicine for therapy and diagnosis through processes, facts and statistical analysis

“…World ca tas tro phes such as Chernobyl, ac ci dents, Three Miles Is land, Fukushima, pro voke dis cus sions about doses, caused bi o log i cal ef fects of ra di a tion and ge net ics (early and late ef fects). Un for tu nately, new facts are pro vided through ac ci dents in nu clear and laser tech nol o gies [2][3][4][5][6][7][8][9][10][11][12][13][14]. In tab.…”

“…1 the lev els of radiobiological pro cesses [9][10][11][12][13] are pre sented. Bi o logi cal en ti ties and hard ness of or ganic/in or ganic ma te ri als and sys tems are con nected with doses with ap pro pri ate def i ni tion, mea sure ments, un cer tain ties, as well as bi olog i cal ra di a tion ef fects [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Many the o ret i cal models on var i ous or ga ni za tion lev els are de vel oped.…”