TABLE 2:

CT and MR imaging findings in six patients with Herpesviridae infection and ARN and/or RBON-H

Patient	Optic Nerve	Optic Chiasm	Optic Tract	Lateral Geniculate	Optic Radiation	Visual Cortex
1^*	↑T1, ↑T2, CECT	↑T1, ↑T2	↑T2	↑T2	↑T2
2	↓T1, T1E, ↑T2, HDCT	T1E, ↑T2	↑T2, ↓T2GE, HDCT	↑T2, ↓T2GE, HDCT	↓T2
3^†	CECT		T1E, ↑T2, ↓T2GE	T1E, ↑T2, ↓T2GE, CECT	T1E, ↑T2, CECT	T1E, ↑T2
4	T1E, ↑T2	T1E, ↑T2	T1E, ↑T2	T1E, ↑T2	↑T2
5^*	T1E, ↑T2	T1E, ↑T2	T1E, ↑T2	T1E, ↑T2	↑T2
6^§	T1E, ↑T2	T1E, ↑T2	T1E, ↑T2	T2FE	T2FE

Note.—CECT indicates enhancement on contrast-enhanced CT images; HDCT, high attenuation (increased relative to gray matter) on nonenhanced CT images; T1E, enhancement on contrast-enhanced T1-weighted MR images, ↑T1, increased signal intensity on T1-weighted MR images; T2FE, enhancement on T2 FLAIR sequence; ↑T2, increased signal intensity on T2-weighted MR images; and ↓T2GE, decreased signal on gradient-echo T2-weighted images.
* Other findings included phthisis bulbi.
† Other findings included T1E in the midbrain, superior cerebellar peduncle, temporal lobe and ↑T2 in the thalamus, midbrain, pons, and cerebellum.
‡ Other findings included T1E in the midbrain and temporal lobe.
§ Other findings included T1E in the meninges, cerebellum, midbrain, Meckel cave and ↑T2 and T2FE in the meninges, cerebellum, midbrain, and Meckel cave.