Precise Cobb Angle Measurement System Based on Spinal Images Merging Function - 04/11/18
, K.-i. Koo a, ⁎ Bienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
Background |
Convenient and precise measurement of the Cobb angle using a small size X-ray detector has been required for local clinics.
Methods |
Cobb angle measurement system using a conventional X-ray source and detector is proposed for accurate Cobb angle measurement. The system consists of a conventional X-ray source, a ruler-added X-ray table, a conventional X-ray detector, and an image processing program. The X-ray table has the lead ruler patterns. The patterns remain white ruler patterns on X-ray images. The proposed image processing program merges the three spinal X-ray images into one whole spinal X-ray image by detecting the ruler patterns on the three spinal X-ray images.
Results |
In order to evaluate our program, Cobb angle measured in the merged image is compared with Cobb angle measured in the X-ray image taken by a large X-ray detector. Average of difference between them is 2.251 degree and standard deviation is 1.339.
Conclusion |
The developed measurement system demonstrated its measurement performance accurately and practically.
Le texte complet de cet article est disponible en PDF.Graphical abstract |
Highlights |
• | Precise Cobb angle measurement system consists of three parts. |
• | A ruler-added table, an image processing program, a typical X-ray imaging system. |
• | The table has the lead ruler patterns to remain white ruler patterns on X-ray images. |
• | The proposed program merges the three spinal images into one whole spinal image. |
• | This merging enables to measure the Cobb angle precisely. |
Plan
Vol 39 - N° 5
P. 343-352 - novembre 2018 Retour au numéro
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