Comparison of quantitative assessment of knee cartilage volume of swine between FLASH and a MEDIC MRI at 3.0 tesla
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    Abstract:

    Objective:To compare the measurement of knee articular cartilage volume of swine between FLASH(Fast Flow Angle Shot) and MEDIC(Multi Echo Data Imagine Combination) MRI data at 3.0T. Methods:The knees of 20 swine were examined by sagittal(sag) MRI performed with a FLASH water-excitation sequence and a MEDIC. After scanning, knee cartilage plates of swine were resected. Results:Obtained with quantitative MRI were compared with that obtained by direct measurement of cartilage volume of the surgically removed tissue. In the knee joint of swine, average reproducible error for cartilage volume was 2.5 to 3.2% with sag FLASH, and 1.6 to 3.0% with sag MEDIC. Correlation coefficients between MEDIC and FLASH and morphologic analysis ranged from 0.90 to 0.98 for cartilage volume. Random pairwise differences between results obtained with FLASH and MEDIC and morphologic analysis were 4.3% to 6.8% and 2.9% to 6.6%, respectively. Systematic pairwise difference between results obtained with FLASH and MEDIC and morphologic analysis were -0.6% to 1.2% and -1.1% to 2.8%, respectively. Conclusion:Cartilage volume reproducibility was slightly higher for the MEDIC data than in the FLASH data. While sag MEDIC permits accurate analysis of cartilage morphology in all knee cartilage plates at reasonable acquisition times in the knee of swine.

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张礼荣,王德杭,尉传社,俞同福,单秀红,陈文华,孙维斌.3.0T MRI上FLASH与MEDIC序列定量测量猪膝关节软骨体积的对比研究[J].南京医科大学学报(自然科学版英文版),2007,(5):436-440.

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  • Received:November 05,2006
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