Correlation Between Quantitative and Subjective Assessment of Image Quality in Paediatric Radiology
| Autor: | A. Pettett, S M Pablot, K. Schneider, D. Ciantar, G. Beluffi, V. Cook, N. Perlmutter, A.D. Cotterill, M. Fitzgerald |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
medicine.medical_specialty
Radiation Scoring system Radiological and Ultrasound Technology business.industry Image quality Radiography Public Health Environmental and Occupational Health General Medicine Test object Surgery Correlation Reference image Signal-to-noise ratio (imaging) Medicine Radiology Nuclear Medicine and imaging Medical physics Paediatric radiology business |
| Zdroj: | Radiation Protection Dosimetry. 90:185-188 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/oxfordjournals.rpd.a033115 |
| Popis: | Achieving acceptable image quality whilst minimising patient dose is the ultimate goal in diagnostic radiology. This work considers both subjective assessments and objective measures. Chest X rays of pigs were assessed by five experienced radiologists, using a scoring system involving eleven features (nine anatomical and two physical) based on comparisons with a reference image. Under similar exposure conditions, digitised images of a test object were used and a variety of signal-to-noise ratios (SNRs) were calculated. The results show that the radiologists agree amongst themselves quite well on most of the eleven features. The SNRs correlated with the radiologists results almost as well. This suggests that 'subjective' image quality criteria have some validity, at least for approximate assessments and that objective image quality criteria are achievable though further work is required. |
| Databáze: | OpenAIRE |
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