Frontal-Occipital Horn Ratio (FOHR)
Frontal-Occipital Horn Ratio (FOHR) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
Open the Frontal-Occipital Horn Ratio (FOHR) → Runs in your browser. No signup, no tracking.
What this is
Frontal-Occipital Horn Ratio (FOHR) is one of 230 deterministic tools in Sophie Well's Clinical Scoring & Risk group. Frontal-Occipital Horn Ratio (FOHR) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
O’Hayon BB, Drake JM, Ossip MG, Tuli S, Clarke M. Frontal and occipital horn ratio: a linear estimate of ventricular size for multiple imaging modalities in pediatric hydrocephalus. Pediatr Neurosurg. 1998;29(5):245-249. (>= 0.55 threshold: Ambati R, et al. AJR Am J Roentgenol. 2019.) Read the source ↗
Worked example: Frontal-occipital horn ratio 0.36 — within the normal reference (mean 0.37).
Sophie Well is a reference and educational tool. Not medical, legal, or financial advice. Does not replace clinician judgment, professional billing review, or legal counsel.