Fig. 5

Anatomic points and areal measurements used in this study. Cv3i indicates the most inferior point of the third cervical vertebra, Hyoid the most superior and anterior point on body of the hyoid bone. 1 SPPA, 2 MPA, 3 IPA
Anatomic points and areal measurements used in this study. Cv3i indicates the most inferior point of the third cervical vertebra, Hyoid the most superior and anterior point on body of the hyoid bone. 1 SPPA, 2 MPA, 3 IPA