BioMed Research International / 2019 / Article / Fig 5

Research Article

Feasibility of T2 Mapping and Magnetic Transfer Ratio for Diagnosis of Intervertebral Disc Degeneration at the Cervicothoracic Junction: A Pilot Study

Figure 5

Receiver operating characteristic (ROC) curves to compare the diagnostic accuracy of T2 mapping and MT imaging. (a) The ROC curves comparing T2 relaxation time values and MTR value of grade I versus II showed larger area under curve (AUC) of T2 relaxation time value (0.77) than that of MTR value (0.69). (b) The ROC curves of grade II versus III. Similarly, the AUC of T2 relaxation time value was larger than that of MTR value (0.92 and 0.58, resp.). (c) The ROC curves of grade III versus IV. The AUC of the curves of T2 relaxation time value and MTR value were 0.97 and 0.67. (d) The ROC curves of grade IV versus grade V. The AUC of the curve of the T2 relaxation time values (0.94) was approximate to that of the curve of the MTR value (0.84).

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