PURPOSE: To analyze the accuracy of growth-plate thickness measurements detected on 1.5-T and 7-T MR images using histology sections as a standard of reference. MATERIALS AND METHODS: Four defrosted pig tibiae were 1.5-T MR scanned and one fresh tibia was 7-T 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 7-T MR images was 465 μm (SD = 62.2) and 1,325 μm (SD = 183.5) on 1.5-T MR measurements. We found a better correspondence between the growth plate thickness measured on the 7-T MR and histology samples compared to 1.5 T. CONCLUSIONS: The growth plate can be identified and measured with high accuracy using 7-T MR. 1.5-T MR can only describe some morphological characteristics.
PURPOSE: To analyze the accuracy of growth-plate thickness measurements detected on 1.5-T and 7-T MR images using histology sections as a standard of reference. MATERIALS AND METHODS: Four defrosted pig tibiae were 1.5-T MR scanned and one fresh tibia was 7-T 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 7-T MR images was 465 μm (SD = 62.2) and 1,325 μm (SD = 183.5) on 1.5-T MR measurements. We found a better correspondence between the growth plate thickness measured on the 7-T MR and histology samples compared to 1.5 T. CONCLUSIONS: The growth plate can be identified and measured with high accuracy using 7-T MR. 1.5-T MR can only describe some morphological characteristics.
Authors: AeRang Kim; Eva Dombi; Jeffrey Solomon; Elizabeth Fox; Frank M Balis; Brigitte C Widemann Journal: Clin Cancer Res Date: 2011-08-01 Impact factor: 12.531
Authors: Laith M Jazrawi; Michael J Alaia; Gregory Chang; Erin F Fitzgerald; Michael P Recht Journal: J Am Acad Orthop Surg Date: 2011-07 Impact factor: 3.020
Authors: Douglas R Pedersen; Noelle F Klocke; Daniel R Thedens; James A Martin; Glenn N Williams; Annunziato Amendola Journal: Iowa Orthop J Date: 2011