Accuracy of MRI in Growth Plate Measurement

Juan Manuel Shiguetomi Medina, Ole Rahbek, Steffen Ringgaard, Maja Sophie Kristiansen, Hans Stødkilde-Jørgensen, Bjarne Møller-Madsen

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Abstrakt

Objective. Analysis of the accuracy of growth plate thickness measurements detected on 1.5T and
7T MR images using histology sections as gold standard.
Materials and Methods. Four defrosted pig tibiae were 1.5T MR scanned and one fresh tibia was 7T
MR scanned. The height of the growth plate was measured and compared to histology.
Results. Histology measurements showed a mean growth plate thickness of 467 μm (SD = 82.2).
The mean growth plate thickness measured in the 7T MR images was 465 μm (SD = 62.2) and
1325 μm (SD=183.5) on 1.5 MRI measurements. We found a better correlation between the growth
plate thickness measured on the 7T MRI and histology samples compared to 1.5T, where the
accuracy was poor.
Conclusion. The growth plate can be identified and measured with high accuracy using 7T MRI.
1.5T MRI can only describe some morphological characteristics; its poor resolution impedes to do
accurate measurements on the height of the growth plate.
OriginalsprogEngelsk
TidsskriftSkeletal Radiology
ISSN0364-2348
StatusUdgivet - 2013
Udgivet eksterntJa

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