Factors affecting image quality

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Presentation transcript:

Factors affecting image quality Module title Part No...., Module No....Lesson No Factors affecting image quality Prof. Moustafa M. Mohamed Vice Dean Faculty of Allied Medical Science Pharos University in Alexandria IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

Part No...., Module No....Lesson No Module title Part No...., Module No....Lesson No Introduction A review is made of: Definitions of image quality parameters The factors that affect the image quality The common image quality related problems encountered by radiologists in routine practice The image criteria concept as a tool to help to achieve good image quality with the use of low radiation dose per radiograph Explanation or/and additional information Instructions for the lecturer/trainer 8: Factors affecting image quality IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

Part No...., Module No....Lesson No Module title Part No...., Module No....Lesson No Topics Image quality evaluators Image contrast Blur or lack of sharpness Distortion and Artifacts Image noise Explanation or/and additional information Instructions for the lecturer/trainer 8: Factors affecting image quality IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

Part No...., Module No....Lesson No Module title Part No...., Module No....Lesson No Overview To become familiar with the factors that determine the image clarity and the way the image quality can be improved Lecture notes: ( about 100 words) Instructions for the lecturer/trainer 8: Factors affecting image quality IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

Image quality evaluators/descriptors Basic evaluators Contrast Resolution Noise Linking evaluators Modulation transfer Signal-to-noise ratio Wiener spectra Overall evaluators Contrast detail analysis Rose Model ROC analysis NOISE Signal-to-noise Ratio S/N Contrast detail analysis Rose model ROC analysis Wiener spectra CONTRAST RESOLUTION Modulation transfer Function MTF 8: Factors affecting image quality