Acute retinal necrosis MRI

	Acute retinal necrosis Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Acute retinal necrosis from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications and Prognosis
Diagnosis
Diagnostic Criteria
History and Symptoms
Physical Examination
Laboratory Findings
Chest X Ray
CT
MRI
Echocardiography or Ultrasound
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Primary Prevention
Secondary Prevention
Cost-Effectiveness of Therapy
Future or Investigational Therapies
Case Studies
Case #1
Acute retinal necrosis MRI On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Acute retinal necrosis MRI All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Acute retinal necrosis MRI
CDC on Acute retinal necrosis MRI
Acute retinal necrosis MRI in the news
Blogs on Acute retinal necrosis MRI
Directions to Hospitals Treating Acute retinal necrosis
Risk calculators and risk factors for Acute retinal necrosis MRI

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Luke Rusowicz-Orazem, B.S.

Overview

MRI imaging may reveal lesions indicative of infection from acute retinal necrosis pathogens.

MRI imaging may reveal the following indicators of acute retinal necrosis:^[1]

Increased T2 signal intensity in the optic pathway: optic nerves, optic chiasm, lateral geniculate bodies, optic radiations, visual cortex, midbrain structures, trigeminal nerves, and meninges
- The increased intensity reveals lesions that may be indicative of Herpes simplex virus or Cytomegalovirus infection.
Contrast enhanced CT T1-weighted images may reveal enhancement of optic nerve, optic chiasm, optic tracts, optic radiation, semilunar ganglion–Meckel cave, meninges, and midbrain.

↑ Bert RJ, Samawareerwa R, Melhem ER (2004). "CNS MR and CT findings associated with a clinical presentation of herpetic acute retinal necrosis and herpetic retrobulbar optic neuritis: five HIV-infected and one non-infected patients". AJNR Am J Neuroradiol. 25 (10): 1722–9. PMID 15569737.