Inferior frontal gyrus

The inferior frontal gyrus is located in the Frontal lobe and lies lateral to the Middle frontal gyrus.

Anatomy

The inferior frontal gyrus is divided into three parts by the ascending ramus and anterior ramus of the lateral sulcus. The pars orbitalis is located most anteriorly, followed by the pars triangularis and pars opercularis.

Figure

Inferior frontal gyrus
Illustration of the inferior frontal gyrus. Figure adapted from Gray's Anatomy.

Imaging

The inferior frontal gyrus is best visualized on an MRI imaging.

Inferior frontal gyrus on MRI
Visualization of the inferior frontal gyrus (red arrow) on a coronal MRI image (postcontrast T1-weighted sequence).

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