Test on Traumatic Brain and Vascular Injuries
Traumatic Brain and Vascular Injuries: A Student's Guide
Test: Traumatic brain injury
20 questions
Question 1: An intramural hematoma, as seen in cases of traumatic vascular injury, demonstrates T1 hyperintensity on MR imaging.
A. Ano
B. Ne
Explanation: MR findings of vascular injury, such as carotid artery dissection, include the presence of an intramural hematoma which is best seen on T1-weighted images with fat suppression, demonstrating T1 hyperintensity.
Question 2: Does the presence of a "spot sign" in an intracerebral hematoma indicate an improved clinical outcome for the patient?
A. Ano
B. Ne
Explanation: The study materials state that active extravasation of contrast into the hematoma, often termed the "spot sign," predicts future expansion of the hematoma and worsens clinical outcome, not improves it.
Question 3: Subcortical gray matter petechial hemorrhages are a common manifestation of primary intra-axial injury.
A. Ano
B. Ne
Explanation: Subcortical gray matter injury, characterized by petechial hemorrhages, is explicitly stated as an uncommon manifestation of primary intra-axial injury in the study materials.
Question 4: Subarachnoid hemorrhage is listed as a primary type of traumatic vascular injury in the study materials.
A. Ano
B. Ne
Explanation: The study materials discuss arterial dissection or occlusion, pseudoaneurysm formation, acquired arteriovenous fistula, carotid cavernous fistula (CCF), and dural fistulas as types of traumatic vascular injuries. Subarachnoid hemorrhage is not explicitly listed as a primary type of traumatic vascular injury in the provided text.
Question 5: Dural fistulas can be caused by the laceration of the middle meningeal artery.
A. Ano
B. Ne
Explanation: Dural fistulas are associated with trauma and can be caused by laceration of the middle meningeal artery, leading to meningeal artery to meningeal vein fistula formation.