Anode heel effect application with step wedge against effect of signal to noise ratio in computed radiography

Ni Nyoman  Ratini; I Made  Yuliara; Windaryoto Windaryoto

doi:10.29332/ijhs.v4n3.467

Authors

Ni Nyoman Ratini
nymratini@unud.ac.id
Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia
I Made Yuliara Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia
Windaryoto Windaryoto Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Denpasar, Indonesia

Keywords:

AHE, computed radiography, image, SNR, step wedge

Abstract

It was researched on the application of Anoda Heel Effect (AHE) with a step wedge on the effect of Signal To Noise Ratio (SNR) on Computed Radiography (CR) has been carried out. This research was conducted on a 21 step wedge with two treatments, namely the application of AHE and without the application of AHE. This measurement is repeated three times on radiographs to obtain a total image of six images (without the application of AHE as many as three images and with the application of AHE as many as three images). The results of taking radiographs using AHE and without AHE were measured using the RadiAnt Dicom Viewer program. The SNR value on the step wedge image without the AHE application has an average of 26.89. The SNR value on the step wedge image using AHE is 60.54. The results of the correlation test (Pearson correlation test) on the SNR showed that there was a significant and very strong effect of the application of AHE on the step wedge on the SNR in CR (p-value <0.001 and the R-value ranging from 0.600 to 0.799).

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