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Fig. 4 | BMC Anesthesiology

Fig. 4

From: Radiological indicators to predict the application of assistant intubation techniques for patients undergoing cervical surgery

Fig. 4

ROC curve of the four indicators including X2, X9, Angle E, MRI 7. (X2: perpendicular distance from hard palate to the tip of upper incisor; X9: atlanto-occipital gap; Angle E: angle between Line 7 and Line 8; MRI 7: distance from skin to hyoid bone. Line 7: a line passing through the posterior-superior point of hard palate and the lowest point of the occipital bone; Line 8: a line passing through the anterior-inferior point and the posterior-inferior point of the second cervical vertebral body)

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