EURORAD ESR

Case 14694

Severe hypoxic - ischaemic brain injury: the reversal, the pseudo-subarachnoid haemorrhage and the white cerebellum signs on CT

Author(s)
Anastasia Zikou, Georgia Mouka, Alexandra Psychou, Paraskevi Kosta, Evgenia Svarna, Vasileios Xydis, Maria I Argyropoulou.

Department of Clinical Radiology,
Medical School of Ioannina, Greece.
Email: anzikou@cc.uoi.gr
 
Patient
male, 62 year(s)
 
 
  • Figure 1
    Reversal sign
     

    Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 2
    Pseudo-subarachnoid haemorrhage sign
     

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema and increased attenuation within the basal cisterns with hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema and increased attenuation within the basal cisterns with hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 3
    Pseudo-subarachnoid haemorrhage sign
     

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 4
    White cerebellum sign
     

    White cerebellum sign: there is a diffuse decrease in density of the supratentorial brain parenchyma (curved arrows) and increased attenuation of cerebellum (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;

    White cerebellum sign: there is a diffuse decrease in density of the supratentorial brain parenchyma (curved arrows) and increased attenuation of cerebellum (arrows).

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Ischaemia / Infarction;
     
     
Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).
 
Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).
 
Reversal sign: unenhanced brain CT showed diffuse increased attenuation of the white matter (arrows) and decreased attenuation of the gray matter including cortex, basal ganglia and thalami (curved arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema and increased attenuation within the basal cisterns with hyperdense appearance of tentorium cerebelli (arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema and increased attenuation within the basal cisterns with hyperdense appearance of tentorium cerebelli (arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).
 
Pseudo-subarachnoid haemorrhage sign: unenhanced brain CT revealed diffuse brain oedema, effacement of the CSF-containing spaces and hyperdense appearance of tentorium cerebelli (arrows).
 
White cerebellum sign: there is a diffuse decrease in density of the supratentorial brain parenchyma (curved arrows) and increased attenuation of cerebellum (arrows).
 
White cerebellum sign: there is a diffuse decrease in density of the supratentorial brain parenchyma (curved arrows) and increased attenuation of cerebellum (arrows).
 
 
 
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