Lobule IV

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Cerebellum Protocol Project
Whole Cerebellum	Lobe Definitions	Vermis Definition	Lobule Delineation

Lobule IV

• Location: Top portion of the cerebellum, focused around the midline
• Description: Can first be identified in the midsagittal slice, as the lobule to the left (inwards) of the top most vertical fissure (shown in Figure 41)
• It is bounded on one side by lobule III. On the other the boundary is the most prominent fissure between llobule III and the primary fissure.

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  Figure 1:I choose 3 screen shots of one particularily difficult section. The boundary between lobules 4 and 5 on the left was straightforward but there was trouble on the right. The sequence was carefully delineated to create a gradual change as the slices progress.

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  "Figure 2:The fissure chosen was the widest at the center of the saggital view but including one additional branch in 4 at the center would also have been acceptable.

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  Figure 3:The final of the sequence.

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  Figure 4:The boundary between lobules V and VI is very unclear throughout this scan and was estimated using experience.