CT for headache: cost/benefit for subarachnoid hemorrhage

Area of Science:

• Medical imaging
• Health economics
• Neurology

Background:

• Subarachnoid hemorrhage is a critical diagnosis in headache patients.
• Computed tomography (CT) is a common diagnostic tool for headaches.
• The cost-effectiveness of routine CT for all headache patients is debated.

Purpose of the Study:

• To estimate the nationwide cost and benefit of using CT scans to detect subarachnoid hemorrhage in headache patients.
• To identify factors influencing the cost-effectiveness of CT for headache evaluation.

Main Methods:

• Cost-benefit analysis incorporating CT usage data, subarachnoid hemorrhage incidence, and treatment outcomes.
• Estimation of case-finding costs based on a university hospital survey.
• Inclusion of data from large-scale clinical trials and recent surgical outcome literature.

Main Results:

• Calculated costs per person saved ranged from $43,975 (best case) to $543,688 (worst case).
• Annual costs ranged from $1,999 (best case) to $24,713 (worst case).
• The case-finding rate was identified as a crucial variable in determining overall costs.

Conclusions:

• CT imaging for headache patients can be cost-effective, particularly when focused on high-yield patient groups.
• Improving the diagnostic yield of CT requires identifying patient characteristics predictive of serious conditions like subarachnoid hemorrhage.
• Future use of diagnostic technologies should prioritize targeted patient selection to optimize resource allocation.