Image Quality Assessment of Head CT: Control Charts as an Useful Instrument

Themain objective of this research was to determine if the diagnostic image, acquired by CT scan, meets the quality criteria previously established for head CT exams. A total of 360 Head Co mputed Tomography exams were analy zed, using a checklist. For data collect ion, quality criteria were created, organized into four criteria groups, consisting of multip le items that must appear in the images studies. After data processing, a large number o f non-conformexaminations were identified in than more than 50% of the sample. We concluded the main causes of these results are: the "incorrect or incomp lete positioning", the "lack of name of the radiographer and "mot ion artefacts". Therefore it is essential to implement a checklist for a systematic evaluationof procedures.

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