EURORAD ESR

Case 14828

DUAL-CT: Intracerebral hemorrhage or iodinated contrast material staining

Author(s)
Alejandro Cernuda García, Juan Calvo Blanco, Elena Santamarta Liébana, Antonio Saiz Ayala, Ana Isabel Barrio Alonso, Jorge Peña Suárez.

Asturias Central Hospital, Spain;
Email:alexcernuda89@gmail.com
 
Patient
male, 53 year(s)
 
 
  • Figure 1
    CT perfusion and CTA circle of Willis
     

    CT perfusion: decreased of cerebral blood flow in left posterior cerebral artery territory.

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

    CTA circle of Willis: Left posterior cerebral artery occlusion.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Education; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 2
    Basal CT and Dual-energy CT
     

    Basal CT: Intraparenchymal areas of hyperattenuation in cerebellar hemispheres, basal cisterns and brainstem.

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

    Dual-energy CT: Virtual unenhanced image clearly shows the foci of hyperattenuation, which are suggestive of an area of diffuse contrast material staining.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Education; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 3
    Haemorrhagic transformation
     

    80 kVp CT. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.

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

    140 kVp CT. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.

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

    Virtual unenhanced image. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Education; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 4
    Contrast material extravasation
     

    80 kVp CT. K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.

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

    140 kVp CT K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.

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

    Virtual unenhanced image. K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Education; Special Focus: Ischaemia / Infarction;
     
     
  • Figure 5
    Contrast material extravasation and haemorrhagic transformation
     

    80 kVp CT. Contrast material extravasation and haemorrhagic transformation

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

    140 kVp CT. Contrast material extravasation and haemorrhagic transformation

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

    Virtual unenhanced image. Contrast material extravasation and haemorrhagic transformation.

     
    Area of Interest: Neuroradiology brain; Imaging Technique: CT; Procedure: Education; Special Focus: Ischaemia / Infarction;
     
     
CT perfusion: decreased of cerebral blood flow in left posterior cerebral artery territory.
 
CTA circle of Willis: Left posterior cerebral artery occlusion.
 
Basal CT: Intraparenchymal areas of hyperattenuation in cerebellar hemispheres, basal cisterns and brainstem.
 
Dual-energy CT: Virtual unenhanced image clearly shows the foci of hyperattenuation, which are suggestive of an area of diffuse contrast material staining.
 
80 kVp CT. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.
 
140 kVp CT. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.
 
Virtual unenhanced image. The attenuation of hydrogen, carbon, nitrogen, and oxygen (human body components)... are similar in 80 kVp and 140 kVp.
 
80 kVp CT. K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.
 
140 kVp CT K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.
 
Virtual unenhanced image. K edges of iodine (33.2 keV) are closer to 80 kVp than to 140 kVp, so the attenuation of iodine-containing substances is substantially higher at 80 kVp than 140kVp.
 
80 kVp CT. Contrast material extravasation and haemorrhagic transformation
 
140 kVp CT. Contrast material extravasation and haemorrhagic transformation
 
Virtual unenhanced image. Contrast material extravasation and haemorrhagic transformation.
 
 
 
Home Search Sections Teaching Cases History FAQ Case Archives Contact Login Disclaimer Imprint Switch to MOBILE version
View desktop version