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Non-contrast Head CT: Sensitivity and Specificity

Introduction: None written. Excerpt from the entry in Subarachnoid Hemorrhage:
patients presenting to ED with sever sudden-onset HA

Sensitivity lower for subarachnoid blood confined to the posterior fossa or spinal cord.

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Associated Diagnoses:

Subarachnoid Hemorrhage

92% sensitive, 100% specific

Subarachnoid Hemorrhage

85% sensitive

Subarachnoid Hemorrhage

50% sensitive


42% sensitive, 91% specific

Skull Fracture

94% sensitive

Subdural Hematoma

91% sensitive

Acute Sinusitis

Accuracy not specified

Cryptococcal Meningitis

17% sensitive