Radiology/ct scan reading

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Question
I had two ct scans with contrast after a neurological episode (still undiagnosed but mimicking stroke). In the first ct scan the affected area showed up white and circular in shape. 4 months later, the 2nd ct scan with contrast as well, showed the affected area as black. Do you know why this might happen? My doctor is unable to find a radiologist to ask.  Thank you.

Answer
Jean,
To really answer your question confidently, i need to see the images. You can attached up to two images to the question here. If you can that would be very helpful.
I will certainly have an explanation if I can see the images but would rather not give multiple hypotheticals that may be completely irrelevant and cause unnecessary distress.

Michael K.

Radiology

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Michael K.

Expertise

Almost any kind of questions regarding any types of radiology exams, procedures, meaning of radiology reports etc...

Experience

12 year experience in the field of radiology

Organizations
American Society of Neuroradiology, Senior Member Society of Pediatric Radiology, Active Member

Publications
Radiology Seminars in pediatric neurology American Journal of Roentgenology American Journal of Neuroradiology

Education/Credentials
Board Certified in Diagnostic Radiology Additional Certificate of Qualification in Neuroradiology

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