Table 2:

Structural MR and diffusion tensor imaging findings in six patients with Joubert syndrome

Patient	Vermis	MTS	Superior Cerebellar Peduncles		Location of the Deep Cerebellar Nuclei	Pyramidal Tract Decussation
Patient	Vermis	MTS	Decussation	Configuration	Location of the Deep Cerebellar Nuclei	Pyramidal Tract Decussation
1	<1/3^*	+	−	Horizontal	Lateralized	−
2	<1/3^*	+	−	Horizontal	Lateralized	−
3	<1/3^*	+	−	Horizontal	Lateralized	−
4	<1/3^*	+	−	Horizontal	Lateralized	−
5	<2/3^†	+	−	Horizontal	Quest, lateralized	−
6	<1/3^*	+	−	Horizontal	Lateralized	−

Note:—+ indicates present; −, absent; MTS, molar tooth sign; quest., questionably.
* Cerebellar vermis present only as far as the fissura prima.
† Cerebellar vermis present only as far as the fissura secunda.