التفاصيل البيبلوغرافية
| العنوان: |
An objective scoring method to evaluate image quality of middle cerebral artery Doppler. |
| المؤلفون: |
Ruiz-Martinez, S., Volpe, G., Vannuccini, S., Cavallaro, A., Impey, L., Ioannou, C. |
| المصدر: |
Journal of Maternal-Fetal & Neonatal Medicine; Feb2020, Vol. 33 Issue 3, p421-426, 6p |
| مصطلحات موضوعية: |
CEREBRAL arteries, IMAGE databases, IMAGE, IMAGING systems, QUALITY assurance |
| مستخلص: |
Objective: To validate an objective scoring system for middle cerebral artery (MCA) pulsed wave Doppler images.Method: From an image database of routine 36-week scans, a random sample of MCA Doppler images was selected. Two reviewers rated the images subjectively as acceptable or unacceptable. Subsequently they used an objective 6-point image scoring system and awarded one point for each of the following: (1) anatomical site, (2) magnification, (3) angle of insonation, (4) image clarity, (5) sweep speed adjustment, and (6) velocity scale and baseline adjustment. Image scores 4-6 were defined as good quality whereas 0-3 as poor. The subjective and objective agreement between the two reviewers was compared using the adjusted Kappa statistic.Results: A total of 124 images were assessed. Using objective scoring the agreement rate between reviewers increased to 91.9% (κ = 0.839) compared to subjective agreement 75.8% (κ = 0.516). The agreement for each criterion was: anatomical site 91.1% (κ = 0.823), magnification 95.2% (κ = 0.903), clarity 83.9% (κ = 0.677), angle 96.0% (κ = 0.919), sweep speed 98.4% (κ = 0.968), and velocity scale and baseline 94.4% (κ = 0.887).Conclusion: Objective assessment of MCA Doppler images using a 6-point scoring system has greater interobserver agreement than subjective assessment and could be used for MCA Doppler quality assurance. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
