Lobule VIIIA

Cerebellum Protocol Project
Whole Cerebellum	Lobe Definitions	Vermis Definition	Lobule Delineation
Lobules I/II	Lobule III	Lobule IV	Lobule V
Lobule VI	Lobule VIIAf	Lobule VIIAt	Lobule VIIB
Lobule VIIIA	Lobule VIIIB	Lobule IX	Lobule X
Lobules VIIIA-X vermis		Lobules VI-VIIB vermis

Lobule VIIIA

• Location: Lower regions of the cerebellum, extends from midline laterally
• Description: Best to identify and label the boundary for VIIIB before VIIIA as the lower boundary can be difficult to identify otherwise
  • The fissure between this lobule and Lobule VIIA Crus I is easily identified in the midsagittal slice.
• This lobule usually consists of one or two white matter branches and its second boundary is characterized by the exclusion of VIIIB which has a distinct curve.

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  Figure 1 : Clear and easy example of VIIIA

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  Figure 2 : The boundary between VIIIA and VIIB was difficult in this scan and was finally determined using the preperventure fissure in the sagittal view.

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  Figure 3 : Sometimes 8A has two distinct branches.

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  Figure 4 : 8a wraps around 8b in an unusual way.