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Magnetic Resonance Three-dimensional Cube Technique in the Measurement of Piglet Femoral Anteversion
Alternative TitleMagnetic Resonance Three-dimensional Cube Technique in the Measurement of Piglet Femoral Anteversion
Sun DongMei; Pan ShiNong; Wang EnBo; Zheng LiQiang; Guo WenLi; Fu XiHu
2016
Source PublicationChinese Medical Journal
ISSN0366-6999
Volume129Issue:13Pages:1584-1591
AbstractBackground: The accurate measurement of the femoral anteversion (FA) angle is always a topic of much debate in the orthopedic surgery and radiology research. We aimed to explore a new FA measurement method to acquire accurate results without radiation damage using piglet model. Methods: A total of thirty piglets were assigned to two groups based on the age. Bilateral femora were imaged with 3.0-T magnetic resonance (MR) and 64-slice computed tomography (CT) examinations on all piglets. FA was measured on MR-three-dimensional (3D) postprocessing software with a four-step method: initial validation of the femoral condylar axis, validation of the condylar plane, validation of the femoral neck axis, and line-plane angle measurement of FA. After MR and CT examinations, all piglets were sacrificed and their degree of FA was measured using their excised, dried femora. MR, CT, and dried-femur measurement results were analyzed statistically; MR and CT measurements were compared for accuracy against each other and against the gold standard dried femur measurement. Results: In both groups, the mean FA value measured by MR was lower than that measured by CT. A statistically significant difference was observed between CT- and dried-femur measurements but not between MR- and dried-femur measurements. A higher correlation (0.783 vs. 0.408) and a higher consistency (0.863 vs. 0.578) with dried-femur measurement results were seen for MR measurements than CT measurements in the 1-week age group. However, in the 8-week age group, similar correlations (0.707 vs. 0.669) and consistencies (0.864 vs. 0.821) were observed. Conclusions: Noninvasive MR-3D-Cube reconstruction was able to accurately measure FA in piglets. Particularly in the 1-week age group with a larger proportion of cartilaginous structures, the correlation and consistency between MR- and dried-femur measurement results were higher than those between CT- and dried-femur measurements, suggesting that MR may be a new useful examination tool for FA-related diseases in children.
Other AbstractBackground: The accurate measurement of the femoral anteversion (FA) angle is always a topic of much debate in the orthopedic surgery and radiology research. We aimed to explore a new FA measurement method to acquire accurate results without radiation damage using piglet model. Methods: A total of thirty piglets were assigned to two groups based on the age. Bilateral femora were imaged with 3.0-T magnetic resonance (MR) and 64-slice computed tomography (CT) examinations on all piglets. FA was measured on MR-three-dimensional (3D) postprocessing software with a four-step method: initial validation of the femoral condylar axis, validation of the condylar plane, validation of the femoral neck axis, and line-plane angle measurement of FA. After MR and CT examinations, all piglets were sacrificed and their degree of FA was measured using their excised, dried femora. MR, CT, and dried-femur measurement results were analyzed statistically; MR and CT measurements were compared for accuracy against each other and against the gold standard dried femur measurement. Results: In both groups, the mean FA value measured by MR was lower than that measured by CT. A statistically significant difference was observed between CT- and dried-femur measurements but not between MR- and dried-femur measurements. A higher correlation (0.783 vs. 0.408) and a higher consistency (0.863 vs. 0.578) with dried-femur measurement results were seen for MR measurements than CT measurements in the 1-week age group. However, in the 8-week age group, similar correlations (0.707 vs. 0.669) and consistencies (0.864 vs. 0.821) were observed. Conclusions: Noninvasive MR-3D-Cube reconstruction was able to accurately measure FA in piglets. Particularly in the 1-week age group with a larger proportion of cartilaginous structures, the correlation and consistency between MR- and dried-femur measurement results were higher than those between CT- and dried-femur measurements, suggesting that MR may be a new useful examination tool for FA-related diseases in children.
KeywordFemoral Anteversion Medicine R Hip Magnetic Resonance Imaging Piglet Three-dimensional Fast Spin Echo Cube
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Outstanding Scientific Fund of Shengjing Hospital]
CSCD IDCSCD:5741651
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/147767
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Sun DongMei,Pan ShiNong,Wang EnBo,et al. Magnetic Resonance Three-dimensional Cube Technique in the Measurement of Piglet Femoral Anteversion[J]. Chinese Medical Journal,2016,129(13):1584-1591.
APA Sun DongMei,Pan ShiNong,Wang EnBo,Zheng LiQiang,Guo WenLi,&Fu XiHu.(2016).Magnetic Resonance Three-dimensional Cube Technique in the Measurement of Piglet Femoral Anteversion.Chinese Medical Journal,129(13),1584-1591.
MLA Sun DongMei,et al."Magnetic Resonance Three-dimensional Cube Technique in the Measurement of Piglet Femoral Anteversion".Chinese Medical Journal 129.13(2016):1584-1591.
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