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Table 2 The T2WI, T1WI and enhancement signal performance of orbital LCH

From: MR imaging features of orbital Langerhans cell Histiocytosis

T2WI

T1WI

Enhancement signal

Case No.

hyper-hypointense mixed signal

isointensity

significantly heterogeneous

5

hyper-hypointense mixed signal

iso-hypointensity

significantly heterogeneous

4

hyper-hypointense mixed signal

isointensity

significantly heterogeneous

1

hyper-hypointense mixed signal

isointensity

flocculent\septations

1

hyper-hypointense mixed signal

iso-hypointensity

flocculent\septations

2

hyper-hypointense mixed signal

iso-hypointensity

slight or moderate heterogenous

2

slight hyperintensity

isointensity

slight or moderate heterogenous

1

slight hyperintensity

iso-hypointensity

slight or moderate heterogenous

1

slight hyperintensity

isointensity

slight homogenous

1

slight hyperintensity

hypointensity

slight homogenous

1

slight hyperintensity

iso-hypointensity

homogenous enhancement of thickening bone

1

hypointensity

isointensity

homogenous enhancement of thickening bone

1

hypointensity

isointensity

significantly heterogeneous

2

  1. Note: besides two cases showed homogenous enhancement of thickening bone, other 21 cases presented significantly enhancement at the edges of lesions and surrounding tissues around the lesion