Quality Assessment of X-ray Images Using Modulation Transfer Function Fractal Dimension

Objective evaluation, e.g., using the modulation transfer function (MTF) or the noise power spectrum (NPS) of an X-ray imaging system may not correctly correspond to the subject's evaluation, e.g., when using the receiver operating characteristic (ROC). Moreover, it is difficult to measure MTF...

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Bibliographic Details
Published inJapanese Journal of Radiological Technology Vol. 70; no. 3; pp. 250 - 253
Main Authors Endo, Shun, Lee, Yongbum, Tsai, Du-Yih, Hara, Takeshi
Format Journal Article
LanguageEnglish
Japanese
Published Japan Japanese Society of Radiological Technology 01.03.2014
Subjects
complexity evaluation
Computer Simulation
contrast sensitivity of the human eye
Fractals
Humans
image quality
medical imaging
Radiographic Image Enhancement - methods
Radiography
ROC Curve
Signal-To-Noise Ratio
Visual Perception - physiology
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Summary:Objective evaluation, e.g., using the modulation transfer function (MTF) or the noise power spectrum (NPS) of an X-ray imaging system may not correctly correspond to the subject's evaluation, e.g., when using the receiver operating characteristic (ROC). Moreover, it is difficult to measure MTF or NPS from clinical images. We therefore applied MTF fractal dimension to an X-ray imaging system. The MTF fractal dimension includes the frequency properties of the human eye in addition to quantitative complexity. In this study, we demonstrated a relationship between basic image quality and MTF fractal dimension using simulated and actual X-ray images.
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ISSN:0369-4305
1881-4883
DOI:10.6009/jjrt.2014_JSRT_70.3.250