This glossary indexes every clinical condition, scoring system, and imaging classification the Radcalcs library addresses. Use the chips above to jump to a specialty cluster, or scroll through every row. Each entry links directly to its calculator; calculator pages contain the full scoring rubric, thresholds, and clinical interpretation panel.
Renal & Nephrology
Kidney FunctionChronic Kidney Disease (CKD) Staging
Estimates glomerular filtration rate from serum creatinine to assign KDIGO CKD stage (G1–G5) and albuminuria category (A1–A3) for chronic kidney disease prognosis and nephrology referral.
Use Calculator →Acute Kidney Injury & Contrast Nephropathy
Estimates creatinine clearance via Cockcroft-Gault to assess acute kidney injury risk and determine a safe iodinated contrast volume ceiling using the 5×CrCl rule.
Use Calculator →ADPKD / Polycystic Kidney Disease
Calculates total kidney volume (TKV) and height-adjusted TKV (HtTKV) to classify autosomal dominant polycystic kidney disease by Mayo imaging class for prognosis and tolvaptan candidacy.
Use Calculator →Metabolic Acidosis & Acid-Base Disorders
Calculates the serum anion gap (albumin-corrected) to classify high- vs normal-gap metabolic acidosis and applies the delta-delta ratio to detect mixed acid-base disturbances.
Use Calculator →Cardiology
Cardiovascular RiskAtherosclerotic Cardiovascular Disease (ASCVD)
Estimates 10-year atherosclerotic cardiovascular disease risk for primary prevention statin therapy decisions, per ACC/AHA 2013 Pooled Cohort Equations.
Use Calculator →Chest Pain / Acute Coronary Syndrome
Stratifies undifferentiated emergency department chest pain into low, moderate, or high 6-week major adverse cardiac event (MACE) risk to direct admission vs early discharge.
Use Calculator →Atrial Fibrillation Stroke Risk
Estimates annual ischemic stroke risk in non-valvular atrial fibrillation to inform anticoagulation decisions per AHA/ACC/HRS 2023 guidelines.
Use Calculator →Non-ST Elevation MI (NSTEMI)
Scores seven binary factors (0–7) to estimate 14-day death and recurrent ischemic event risk in non-ST elevation acute coronary syndrome, with DAPT strategy guidance.
Use Calculator →Coronary Artery Calcification (CAC)
Quantifies coronary artery calcium by Agatston score and percentile rank from non-contrast cardiac CT for cardiovascular risk stratification beyond traditional risk factors.
Use Calculator →Pulmonary & Critical Care
RespiratoryCommunity-Acquired Pneumonia (CURB-65)
Severity-of-illness score for community-acquired pneumonia that stratifies patients for outpatient, inpatient, or ICU management, with 30-day mortality estimates per BTS guidance.
Use Calculator →Pneumonia Severity Index (PSI / PORT)
Two-step pneumonia severity index (Fine/PORT) that assigns Class I to V with associated 30-day mortality for community-acquired pneumonia admission decisions.
Use Calculator →Pulmonary Embolism — Wells Score
Clinical prediction rule for pre-test probability of pulmonary embolism, stratified 2-level and 3-level to direct D-dimer versus CT pulmonary angiography workup.
Use Calculator →Pulmonary Embolism — Revised Geneva
Fully objective 8-criterion clinical prediction rule for pulmonary embolism pre-test probability, providing 3-tier classification for D-dimer / CTPA decision making without subjective judgment.
Use Calculator →Incidental Pulmonary Nodules
Applies 2017 Fleischner Society follow-up and management guidelines for incidentally detected solid and subsolid pulmonary nodules, by nodule type, size, and patient risk.
Use Calculator →Hypoxemia / A-a Gradient
Calculates alveolar-arterial oxygen gradient with age-adjusted normal values, a/A ratio, and P/F ratio to localize hypoxemia as ventilation, diffusion, or shunt etiology.
Use Calculator →Emergency & Neuro
Risk StratificationDeep Vein Thrombosis (DVT)
Clinical prediction rule for pre-test probability of lower-extremity deep vein thrombosis that directs D-dimer versus compression ultrasound workup.
Use Calculator →Acute Ischemic Stroke (NIHSS)
Quantifies neurologic deficit across 11 domains (0–42) for acute ischemic stroke severity, severity class, and IV thrombolysis / thrombectomy eligibility.
Use Calculator →Traumatic Brain Injury / Coma (GCS)
Sums Eye, Verbal, and Motor subscores (3–15) for level-of-consciousness assessment in traumatic brain injury, intoxication, and post-arrest, with intubation notation.
Use Calculator →Sepsis (qSOFA)
Three-criterion bedside screen (altered mentation, hypotension, tachypnea) that identifies patients with suspected infection at high risk of sepsis-related poor outcome outside the ICU.
Use Calculator →Cervical Spine Injury
Three-step decision rule that identifies alert trauma patients who can be clinically cleared without cervical spine imaging — high sensitivity for clinically significant C-spine injury.
Use Calculator →Ankle & Foot Fracture
Decision tool for ankle and midfoot radiography in acute blunt trauma; high sensitivity for fracture, reducing unnecessary imaging in the emergency department.
Use Calculator →Thyroid & Endocrine
EndocrineHypothyroidism / Hyperthyroidism
Interprets TSH against population reference ranges, color-coded for subclinical and overt hypothyroid and hyperthyroid states, with an optional FT4 add-on.
Use Calculator →Thyroid Nodule / Goiter
Applies ACR TI-RADS (composition, echogenicity, shape, margin, echogenic foci) to assign thyroid nodule risk category and FNA / follow-up ultrasound size thresholds.
Use Calculator →Hepatology
Liver DiseaseEnd-Stage Liver Disease / Cirrhosis
Model for End-Stage Liver Disease (and MELD-Na) that predicts 90-day mortality and informs UNOS liver transplant listing prioritization.
Use Calculator →Hepatic Cirrhosis (Child-Pugh)
Classifies hepatic functional reserve in cirrhosis as Child-Pugh class A, B, or C with 1- and 2-year survival estimates and perioperative risk guidance.
Use Calculator →Hepatomegaly
Estimates hepatic volume by ellipsoid formula with hepatomegaly thresholds, useful for surgical planning, transplant evaluation, and longitudinal steatosis monitoring.
Use Calculator →Breast Imaging
Mammography / US / MRIProstate Imaging
Multiparametric MRIRadiation & Workflow
Dose & ProductivityCT Radiation Dose / Effective Dose
Converts CTDIvol and DLP to patient effective dose in millisieverts using ICRP conversion factors, with comparison against ACR Dose Index Registry benchmarks.
Use Calculator →Radiology Productivity (wRVU)
Looks up radiology work Relative Value Units by CPT code for CT, MRI, X-ray, ultrasound, and interventional procedures; aggregates total and annualized wRVUs.
Use Calculator →General Medicine
ScreeningOrgan & Body Measurement
Ellipsoid FormulaOvarian Cyst / PCOS Monitoring
Estimates ovarian volume by ellipsoid formula with menopausal-status-specific reference ranges, used for ovarian cyst and polycystic ovary syndrome (PCOS) monitoring.
Use Calculator →Testicular Atrophy / Hypogonadism
Estimates testicular volume by ellipsoid and Lambert formulas with adult reference ranges, useful for hypogonadism and testicular atrophy assessment.
Use Calculator →Uterine Fibroids
Estimates uterine volume by ellipsoid formula with reference ranges stratified by menopausal status and parity, for fibroid burden and adenomyosis monitoring.
Use Calculator →Splenomegaly
Estimates splenic volume by ellipsoid formula and assigns a four-tier splenomegaly classification (normal, mild, moderate, massive) for hematologic and infectious workup.
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