Comparison between Predicted and Measured X-Ray Output in Some Conventional Radiography Units

• 作者: Calvin Didier Njiki Joseph Eric Martial Ndjaka Manyol Thierry Ndzana Ndah Yolande Huguette Ebele Yigbedeck
• 来源期刊: 医学物理学、临床工程、放射肿瘤学(英文)
• 学科: 教育
• 关键词: X-RAY SPECTRA TASMICS TASMIP
• 年，卷（期）: 2019,（4）
• 页码范围: 204-210
• 页数: 7页
• 分类号: G63

摘要

This study aims to investigate how accurate are TASMICS and TASMIP models in predicting the X-ray output of some Conventional Radiology X-ray units with high frequency generators. The X-ray output in microgray per milliampere seconds (μGy/mAs) at 100 cm from the X-ray tube was determined for selected high voltages and taking into account the total filtration. The X-ray output was then measured directly with the multi-purpose detectors (MPD), Raysafe X2. The maximum relative error between measured and predicted values was found to be equal to 20%. The maximum relative error between measured and predicted values obtained demonstrates the difficulty of accurately predicting the X-ray tube output using TASMICS and TASMIP models since they are based on fixed anode angles and different composition of the tungsten anode.