Department of Diagnostic and Interventional Radiology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany.
Department of Radiology, University Hospital Cologne, Köln, Germany.
Eur Radiol. 2017 Dec;27(12):5049-5055. doi: 10.1007/s00330-017-4923-8. Epub 2017 Jun 28.
To compare the diagnostic accuracy of medical-grade and calibrated consumer-grade digital displays for the detection of subtle bone fissures.
Three experienced radiologists assessed 96 digital radiographs, 40 without and 56 with subtle bone fissures, for the presence or absence of fissures in various bones using one consumer-grade and two medical-grade displays calibrated according to the DICOM-Grayscale Standard Display Function. The reference standard was consensus reading. Subjective image quality was also assessed by the three readers. Statistical analysis was performed using receiver operating characteristic analysis and by calculating the sensitivity, specificity, and Youden's J for each combination of reader and display. Cohen's unweighted kappa was calculated to assess inter-rater agreement. Subjective image quality was compared using the Wilcoxon signed-rank test.
No significant differences were found for the assessment of subjective image quality. Diagnostic performance was similar across all readers and displays, with Youden's J ranging from 0.443 to 0.661. The differences were influenced more by the reader than by the display used for the assessment.
No significant differences were found between medical-grade and calibrated consumer-grade displays with regard to their diagnostic performance in assessing subtle bone fissures. Calibrated consumer-grade displays may be sufficient for most radiological examinations.
• Diagnostic performance of calibrated consumer-grade displays is comparable to medical-grade displays. • There is no significant difference with regard to subjective image quality. • Use of calibrated consumer-grade displays could cut display costs by 60-80%.
比较医用级和经过校准的消费级数字显示器在检测细微骨裂方面的诊断准确性。
3 名经验丰富的放射科医生使用 1 种消费级和 2 种根据 DICOM 灰度标准显示功能校准的医用级显示器，对 96 张数字射线照片（40 张无细微骨裂，56 张有细微骨裂）进行骨裂有无的评估。参考标准为共识阅读。3 名读者还评估了主观图像质量。使用受试者工作特征分析，并计算每种读者-显示器组合的敏感度、特异性和 Youden's J 来进行统计分析。使用 Cohen's 未加权 kappa 评估组内一致性。使用 Wilcoxon 符号秩检验比较主观图像质量。
在评估主观图像质量方面，没有发现显著差异。在所有读者和显示器的评估中，诊断性能都相似，Youden's J 范围为 0.443 至 0.661。差异更多地受到读者的影响，而不是评估中使用的显示器。
在评估细微骨裂方面，医用级和经过校准的消费级显示器的诊断性能没有显著差异。校准的消费级显示器可能足以满足大多数放射学检查的需要。
• 校准的消费级显示器的诊断性能可与医用级显示器相媲美。
• 主观图像质量方面没有显著差异。
• 使用校准的消费级显示器可以将显示器成本降低 60-80%。
