WebMammo 156 Phantom for Digital Mammography Systems Measure and monitor signal-to-noise, resolution and image quality in accordance with ACR and MQSA requirements. Simulates radiographic characteristics of … WebCT Number is the value of the X-ray attenuation coefficient which is determined by the average energy of X-rays and the absorber atomic number is expressed by the attenuation coefficient. The role of the CT number on a CT scan machine is to assess
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WebBerdasarkan hasil penelitian analisis akurasi dan keseragaman nilai CT Number dari citra CT Scan menggunakan phantom Gammex didapatkan kesimpulan sebagai berikut: Nilai akurasi CT Number yang didapatkan pada ketebalan slice yang berbeda-beda yaitu -3,8; -3,9; -3,5 dan -3,7 dengan nilai lolos uji ± 4. Web(4) The Gammex ACR CT phantom (Gammex RMI, Middleton, WI) is made from Solid Water and has a 20 cm diameter and 16 cm length. It con - tains water-equivalent, bone-equivalent, acrylic, air, and polyethylene inserts for CT-number linearity assessment. A 0.011 mm diameter tungsten carbide bead is used for modulation transfer function (MTF ... cute sayings to put on dog shirts
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