EURORAD ESR

Case 637

MR spectroscopy and diffusion imaging of a craniopharyngioma

Author(s)
R. N. Sener
 
Patient
male, 14 year(s)
 
 
  • Published 27.11.2000
  • DOI 10.1594/EURORAD/CASE.637
  • Section Neuroradiology
  • Case Type Clinical Cases
  • Difficulty Resident
  • Views 9238
  • Language(s)
  • Figure 1
    Craniopharyngioma
     

    A suprasellar mass is noted with low density contents, and partly calcified rims.

     
    Area of Interest: unknown; Imaging Technique: Craniopharyngioma;

    Sagittal T1-weihgted image, after intravenous administration of contrast medium reveals rim enhancement of viable tumor tissue.

     
    Area of Interest: unknown; Imaging Technique: Craniopharyngioma;

    FLAIR (fluid attenuated inversion recovery) image reveals high signal of the cyst contents, reflecting presence of high amounts of viscous material.

     
    Area of Interest: unknown; Imaging Technique: Craniopharyngioma;
     
     
  • Figure 2
    Cholesterol peak

    A huge peak centered at 1.0 ppm, with the base ranging between 0.5 ppm and 1.5 ppm, is seen probably belonging to cholesterol, in conformity with the biochemical evidence.

     
    Area of Interest: unknown; Imaging Technique: Cholesterol peak;
     
     
  • Figure 3
    Diffusion images
     

    Diffusion MR image (diffusion sensitivity value: b=0), which actually is a T2-weighted image, shows high signal of the lesion with a pixel value of 1483.5

     
    Area of Interest: unknown; Imaging Technique: Diffusion images;

    Diffusion MR image (b=1000 sec/mm2), which is the true diffusion image, reveals a pixel value of 141.2. The apparent diffusion coefficient (ADC) value calculated according to Stejskal-Tanner equation was 2.37 X 10-3...

     
    Area of Interest: unknown; Imaging Technique: Diffusion images;
     
     
A suprasellar mass is noted with low density contents, and partly calcified rims.
 
Sagittal T1-weihgted image, after intravenous administration of contrast medium reveals rim enhancement of viable tumor tissue.
 
FLAIR (fluid attenuated inversion recovery) image reveals high signal of the cyst contents, reflecting presence of high amounts of viscous material.
 
A huge peak centered at 1.0 ppm, with the base ranging between 0.5 ppm and 1.5 ppm, is seen probably belonging to cholesterol, in conformity with the biochemical evidence.
 
Diffusion MR image (diffusion sensitivity value: b=0), which actually is a T2-weighted image, shows high signal of the lesion with a pixel value of 1483.5
 
Diffusion MR image (b=1000 sec/mm2), which is the true diffusion image, reveals a pixel value of 141.2. The apparent diffusion coefficient (ADC) value calculated according to Stejskal-Tanner equation was 2.37 X 10-3 mm2/sec, a value lower than normal CSF, higher than vasogenic edema, and similar to microcystic encephalomalacia.
 
 
 
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