<![CDATA[Background: An X-ray tube produces polyenergetic X-rays consisting of low-, medium-, and high-energy photons. Low-energy X-rays do not contribute to image formation as they cannot penetrate the patient's body. Adding filtration during high-kV radiography exams absorbs these low-energy photons, thereby reducing patient radiation dose.Objective: This study aimed to compare radiographic image quality in abdominal examinations with and without additional filters using the Signal-to-Noise Ratio (SNR).Methods: This quantitative study utilized a pre-experimental design conducted at the Radiology Laboratory of the Diploma Three Radiology Program, Poltekkes Kemenkes Semarang in Purwokerto. A total of 20 radiograph samples were categorized into four filter groups ($n = 5$ each): no additional filter (0 mm Al), 2 mm Al, a combination of 1 mm Al + 0.1 mm Cu, and a combination of 1 mm Al + 0.2 mm Cu.Results: A comparative statistical analysis revealed significant differences in SNR values across the filter types ($p < 0.05$). The no-filter condition (0 mm Al) yielded the highest mean SNR (13.265), whereas the 1 mm Al + 0.2 mm Cu combination filter produced the lowest mean SNR (11.897). The SNR values ranked from highest to lowest were 0 mm Al, 2 mm Al, 1 mm Al + 0.1 mm Cu, and 1 mm Al + 0.2 mm Cu.Conclusion: The application of additional filtration significantly affects abdominal radiograph image quality, with the 0-mm Al (no filter) setting producing the maximum SNR.]]>
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