X-ray Beam Quality Conformity Test Using Half Value Layer (HVL) Aluminium Filter in Stationary X-ray Device at Academy Teknik Radiodiagnostik and Radioterapi Bali

Abstract

A study was conducted to determine the quality of the X-ray beam using a half value layer (HVL) aluminum filter on a stationary X-ray device at the Akademi Teknik Radiodiagnostik dan Radiotherapi (ATRO) Bali. This study aims to determine the quality of the X-ray beam on a stationary X-ray device at ATRO Bali by looking at the magnitude of the HVL value produced. The tools used are aluminum filters with thicknes of 0.5, 1.0, and 2.0 mm which are varied for each current used, a constant tube voltage of 80 kV, tube currents of 100, 125, 160, and 200 mA, exposure time of 0.1 s and an X-ray multimeter. The value of HVL was determined by linear regression test using SPSS. On each tube current used, the average HVL value was 2.77 mmAl. The t-test indicated that the HVL value is not in accordance with the KMK standard number 1250 in 2009 which is in the range of ? 2.3 mmAl to < 2.5 mmAl.