Which of the following is not the feature of CT Brain indicating Brain Edema? A. >10mm midline shift B. Gray to white matter ratio >1.18 C. Brain herniation D. Absence of the ambient cistern
Question
Which of the following is not the feature of CT Brain indicating Brain Edema? A. >10mm midline shift B. Gray to white matter ratio >1.18 C. Brain herniation D. Absence of the ambient cistern
Solution
The feature that does not indicate Brain Edema in a CT Brain is B. Gray to white matter ratio >1.18.
Brain edema, or swelling, can be identified on a CT scan by a number of features, including a midline shift greater than 10mm (A), brain herniation (C), and the absence of the ambient cistern (D).
However, a gray to white matter ratio greater than 1.18 (B) is not a typical feature of brain edema. This ratio is often used to assess the severity of brain injuries, but it does not directly indicate swelling. Instead, in brain edema, the gray to white matter ratio would typically decrease due to the swelling of the white matter.
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