Encephalopathy MRI: Difference between revisions

Jump to navigation Jump to search
Line 13: Line 13:


[[Image:Fahr disease-metabolic encephalopathy.jpg|800px|left|thumb|Encephalopathy]]
[[Image:Fahr disease-metabolic encephalopathy.jpg|800px|left|thumb|Encephalopathy]]
<br style="clear:left">


==Magnetic Resonance Spectroscopy (MRS)==
==Magnetic Resonance Spectroscopy (MRS)==

Revision as of 19:16, 18 July 2020

Encephalopathy

Home

Patient Information

Overview

Classification

Pathophysiology

Causes

Differentiating Encephalopathy from other Diseases

Epidemiology & Demographics

Risk Factors

Screening

Natural History, Complications & Prognosis

Diagnosis

Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

Electroencephalogram

Chest X Ray

CT

MRI

Echocardiography or Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Encephalopathy MRI On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Encephalopathy MRI

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Encephalopathy MRI

CDC on Encephalopathy MRI

Encephalopathy MRI in the news

Blogs on Encephalopathy MRI

Directions to Hospitals Treating Encephalopathy

Risk calculators and risk factors for Encephalopathy MRI

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]

Overview

More effective than CT scan in identifying lesions. Useful in differentiating the hepatic encephalopathy from the underlying brain causes. Increased resonance in T1 weighted images in hepatic encephalopathy due to manganese.[1]

MRI Scan

  • More effective than CT scan in identifying lesions
  • Useful in differentiating the hepatic encephalopathy from the underlying brain causes.
  • Increased signal sensitivity in globus pallidus on T1 weighted images.[2]
  • This intensity may be due to accumulation of manganese[1]
  • Basal Ganglia changes are evident on MRI due to high metabolic activity in majority causes of metabolic encephalopathy.[3]
Encephalopathy


Magnetic Resonance Spectroscopy (MRS)

  • Non invasive method which allows serial measurement of various neuro metabolites in brain.[4]
  • Patients of hepatic encephalopathy show increase in glutamate.
  • MRI and MRS are correlated with other brain lesions like parkinson's disease. It helps in differentiating from encephalopathy.[5]

References

  1. 1.0 1.1 Krieger D, Krieger S, Jansen O, Gass P, Theilmann L, Lichtnecker H (1995). "Manganese and chronic hepatic encephalopathy". Lancet. 346 (8970): 270–4. PMID 7630246. Unknown parameter |month= ignored (help)
  2. Kulisevsky J, Pujol J, Balanzó J; et al. (1992). "Pallidal hyperintensity on magnetic resonance imaging in cirrhotic patients: clinical correlations". Hepatology. 16 (6): 1382–8. PMID 1446893. Unknown parameter |month= ignored (help)
  3. Bathla G, Hegde AN (2013). "MRI and CT appearances in metabolic encephalopathies due to systemic diseases in adults". Clin Radiol. 68 (6): 545–54. doi:10.1016/j.crad.2012.05.021. PMID 23142023.
  4. Taylor-Robinson SD, Sargentoni J, Marcus CD, Morgan MY, Bryant DJ (1994). "Regional variations in cerebral proton spectroscopy in patients with chronic hepatic encephalopathy". Metab Brain Dis. 9 (4): 347–59. PMID 7898401. Unknown parameter |month= ignored (help)
  5. Laubenberger J, Häussinger D, Bayer S, Gufler H, Hennig J, Langer M (1997). "Proton magnetic resonance spectroscopy of the brain in symptomatic and asymptomatic patients with liver cirrhosis". Gastroenterology. 112 (5): 1610–6. PMID 9136840. Unknown parameter |month= ignored (help)

Template:WH Template:WS