Metoda za dobivanje slike HVL-a spektra rendgenskog zračenja (CROSBI ID 493046)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Surić, Marija ; Radalj, Željko ; Prlić, Ivica ; Vrtar, Mladen
hrvatski
Metoda za dobivanje slike HVL-a spektra rendgenskog zračenja
While performing diagnostic radiology procedures, stability and constancy of X-ray anode voltage are very important. Variations in kVp value changes X-ray beam's intensity and its penetrating power. Filters are commonly used in diagnostic radiology techniques to minimize a dose received by a patient without decreasing desired contrast of the diagnostic image. HVL &#8211 ; (Half Valuel Layer) is used as a measurable quality parameter for X-ray beams and it is defined as a value of absorber thickness, which will transmit one half of the incident intensity of the x-ray radiation output incident upon it. It is known that HVL depends proportionally on kVp value so detecting any changes in HVL for the same nominal X-ray tube kVp value will indicate the malfunctions of the X-ray generator. In this paper a simple method of HVL determination using set of aluminum step wedges is presented. The method enables very simple and precise HVL determination and it is capable of detecting variations in kVp value, which are less than 5% of the nominal value. Using this method while performing periodical testing of X-ray units with constant parameters (chosen kVp and mAs value) could provide frequent kVp value monitoring, determinating HVL changes, and controlling the beam intensity comparing X-ray films blackening from images taken with the same nominal parameters
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engleski
A measurement method for HVL estimation of x ray spectrum output
nije evidentirano
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nije evidentirano
Podaci o prilogu
143-148-x.
2003.
objavljeno
Podaci o matičnoj publikaciji
Zbornik radova petoga simpozija Hrvatskoga društva za zaštitu od zračenja s međunarodnim sudjelovanjem
Krajcar Bronić, Ines ; Miljanić, Saveta ; Obelić, Bogomil
Zagreb: Hrvatsko društvo za zaštitu od zračenja
Podaci o skupu
Peti simpozij Hrvatskoga društva za zaštitu od zračenja s međunarodnim sudjelovanjem
predavanje
09.04.2003-11.04.2003
Stubičke Toplice, Hrvatska