COMPARISON OF MR IMAGES FOR AGE DETERMINATION, T1 WEIGHTED IMAGES (T1WI) VERSUS T2* WEIGHTED IMAGES (T2*WI)

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SHIMADA YOSHIKAZU; SHIMAO DAISUKE; KOBAYASHI JIRO; NAKAHORI CHIKAKO; SHIMADA MARIKO; FUJIMOTO HIROO; MISAWA TATSUYA; KATO HARUYASU; DOHI MICHIKO

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Journal: Asian Journal of Sports Medicine Year:2012 | Volume:3 | Issue:1 Page(s): 47-52

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Title

COMPARISON OF MR IMAGES FOR AGE DETERMINATION, T1 WEIGHTED IMAGES (T1WI) VERSUS T2* WEIGHTED IMAGES (T2*WI)

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Keywords

WRIST MRI

OPEN MRI

AGE DETERMINATION

BONE AGE

T2* WEIGHTED IMAGE

Abstract

fusion following the studies by FIFA (Federation Internationale de Football Associations). Research using images other than T1WI has not been reported. The aim of this study is to evaluate the grade of epiphyseal fusion by T2* weighted images (T2*WI) and to investigate new findings on T2*WI as compared with T1WI.Methods: A total of 87 subjects, all junior football players between the ages of 12 and 17 years old, were examined. T1 and T2* WI were obtained using a 1.2T Open type MR system. The T1WI and T2*WI were rated twice randomly by four radiologists using the FIFA grading system.Results: The intra-rater reliability for grading was higher in T1WI (The Intraclass Correlation Coefficient (ICC)=0.949-0.985) than in T2*WI (ICC=0.917-0.943). The inter-rater reliability for grading was also higher in T1WI (ICC=0.923) than in T2*WI (ICC=0.867).Conclusions: This research showed that T1WI is a better sequence than T2*WI to evaluate bone fusion following FIFA protocol. It was speculated that the reason for this is that T1WI has higher tissue contrast resolution and enables clearer images of the epiphyseal fusion than T2*WI and the grading system by T1WI was not suitable for T2*WI.

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APA: Copy

SHIMADA, YOSHIKAZU, SHIMAO, DAISUKE, KOBAYASHI, JIRO, NAKAHORI, CHIKAKO, SHIMADA, MARIKO, FUJIMOTO, HIROO, MISAWA, TATSUYA, KATO, HARUYASU, & DOHI, MICHIKO. (2012). COMPARISON OF MR IMAGES FOR AGE DETERMINATION, T1 WEIGHTED IMAGES (T1WI) VERSUS T2* WEIGHTED IMAGES (T2*WI). ASIAN JOURNAL OF SPORTS MEDICINE, 3(1), 47-52. SID. https://sid.ir/paper/316686/en

Vancouver: Copy

SHIMADA YOSHIKAZU, SHIMAO DAISUKE, KOBAYASHI JIRO, NAKAHORI CHIKAKO, SHIMADA MARIKO, FUJIMOTO HIROO, MISAWA TATSUYA, KATO HARUYASU, DOHI MICHIKO. COMPARISON OF MR IMAGES FOR AGE DETERMINATION, T1 WEIGHTED IMAGES (T1WI) VERSUS T2* WEIGHTED IMAGES (T2*WI). ASIAN JOURNAL OF SPORTS MEDICINE[Internet]. 2012;3(1):47-52. Available from: https://sid.ir/paper/316686/en

IEEE: Copy

YOSHIKAZU SHIMADA, DAISUKE SHIMAO, JIRO KOBAYASHI, CHIKAKO NAKAHORI, MARIKO SHIMADA, HIROO FUJIMOTO, TATSUYA MISAWA, HARUYASU KATO, and MICHIKO DOHI, “COMPARISON OF MR IMAGES FOR AGE DETERMINATION, T1 WEIGHTED IMAGES (T1WI) VERSUS T2* WEIGHTED IMAGES (T2*WI),” ASIAN JOURNAL OF SPORTS MEDICINE, vol. 3, no. 1, pp. 47–52, 2012, [Online]. Available: https://sid.ir/paper/316686/en

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