Cardiothoracic Imaging

Standardized coronary CTA reporting: assigns a stenosis category (0, 1, 2, 3, 4A, 4B, 5, or N), an overall plaque-burden grade (P1–P4), and modifiers (N, HRP, I, S, G, E), then pairs the composite code with management suggestions for stable or acute chest pain.

Follow-up recommendations for pulmonary nodules found incidentally on CT in adults 35 years or older, combining nodule number, composition (solid, part-solid, or pure ground-glass), mean size, and clinical risk of malignancy.

ACR Lung-RADS v2022 categories (0, 1, 2, 3, 4A, 4B) for lung cancer screening LDCT, covering solid, part-solid, and ground-glass nodules as well as juxtapleural nodules, airway nodules, and atypical pulmonary cysts, with size, growth, and stepped-management rules.

Estimates the probability that a pulmonary nodule found on a baseline screening low-dose CT is malignant, using the McWilliams (PanCan/Brock University) logistic models. Implements all four published variants (parsimonious and full, each with or without spiculation).

Estimates the pre-test probability that a radiologically indeterminate solitary pulmonary nodule is malignant from age, smoking, remote cancer history, nodule diameter, spiculation and upper-lobe location (Swensen 1997).

Quantifies pulmonary arterial clot burden in acute PE as a percentage obstruction index. Each thrombus scores points equal to the number of segmental branches distal to it, weighted 1 for partial and 2 for total occlusion; the index is Σ(n·d)/40 × 100%.

Computes the right-to-left ventricular diameter ratio on CT pulmonary angiography and bands it against the >0.9 (4-chamber adverse events), >1.0 (ESC RV-dysfunction criterion) and ≥1.5 (marked dilatation) thresholds, with measurement-plane guidance.

Bands a total Agatston coronary artery calcium score into the standard categories (0, 1–99, 100–399, ≥400) with guideline-based risk interpretation, statin-decision context from the 2018 AHA/ACC guideline, and MESA age/sex/ethnicity percentile guidance.

Estimates the probability that an indeterminate solid pulmonary nodule is malignant by combining the six Mayo Clinic predictors (age, smoking, remote cancer history, diameter, spiculation, upper-lobe location) with the qualitative FDG-PET uptake grade. This is the model the BTS 2015 guideline uses to re-assess risk after PET-CT.

Computes the volume doubling time of a pulmonary nodule from two scans a known interval apart, from either a diameter pair (volume ∝ d³) or a measured volume pair. Reports VDT in days, percentage volume change, the ≥25% volume / ≥2 mm diameter growth criteria, and the BTS/NELSON growth bands.

Walks a pulmonary nodule through the British Thoracic Society 2015 pathway by type (solid, pure ground-glass, part-solid), size/volume, persistence and Brock/Herder risk, returning the guideline-recommended next step — discharge, surveillance CT with interval, PET-CT, biopsy or resection.

Places an Agatston coronary artery calcium score in the MESA reference distribution for the patient’s age, sex and ethnicity (White/Black/Hispanic/Chinese), reporting the approximate percentile alongside the standard 0 / 1–99 / 100–399 / ≥400 categories and the peer probability of any detectable calcium.

Assigns a single CT suspicion category (0–6) for pulmonary involvement by COVID-19 based on the overall imaging pattern. This is a gestalt classification, not a summed points score.

Classifies HRCT of fibrosing ILD into Typical UIP, Probable UIP, Indeterminate for UIP, or Most consistent with non-IPF diagnosis using the 2018 four-tier criteria shared by the Fleischner Society white paper and ATS/ERS/JRS/ALAT guideline.

Looks up the overall stage group from T, N, and M categories using the IASLC 9th edition (effective 2025). Incorporates N2a/N2b and M1c1/M1c2 subdivisions and the rearranged IIA–IIIB groupings.

Dual-mode severity score for cystic fibrosis lung disease: modified Bhalla thin-section CT score (structural change, 0–25 inverted scale) or classic Brasfield chest radiograph score (25 minus deductions).