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A study of the relationship between routine ultrasound quality assurance parameters and subjective operator image assessment

Department of Medical Physics, Leeds General Infirmary, Leeds LS1 3EX, UK

Comparisons have been made between a number of routine quality assurance (QA) measurements and a number of related subjective aspects of image quality. These comparisons between lateral resolution and perceived definition, dynamic range and subjective grey-level assessment, and slice thickness and overall image quality appraisal showed very poor correlation. We deduce from this that other QA parameters are needed to quantify good image quality as denned by the operators.

Key Words: Ultrasound • Quality assurance • Subjective perception