For educational and reference use only. These calculators do not replace clinical judgement, local protocols, or a qualified clinician. Verify every result independently before it informs patient care.
Cardiothoracic imaging
CAD-RADS 2.0
Coronary Artery Disease Reporting and Data System 2.0 category from the maximal coronary stenosis. A 2.0 category is reported WITH a plaque burden grade, “CAD-RADS 3/P2”, and the modifiers N, HRP, I, S, G and E are added separately.
By your institution's method. CAC score: P1 1–100, P2 101–400, P3 401–1000, P4 >1000. Segment involvement score: P1 1–4, P2 5–8, P3 9–12, P4 13–16 segments. Not applicable to CAD-RADS 0, which is the absence of plaque.
Result
CAD-RADS 0
No CAD: no further cardiac work-up for stenosis.
Formula
Category from maximal stenosis: 0 / 1 (1–24) / 2 (25–49) / 3 (50–69) / 4A (70–99, one or two vessels) / 4B (left main ≥50%, or 70–99% in three vessels) / 5 (occlusion). Reported with a plaque burden grade P1–P4.
Disclaimer
Reflects the maximal stenosis ONLY. A complete CAD-RADS 2.0 report also carries a plaque burden grade, P1 mild, P2 moderate, P3 severe, P4 extensive, and the modifiers N, HRP, I, S, G and E. Management also depends on symptoms and clinical risk.
For educational and reference use only. These calculators do not replace clinical judgement, local protocols, or a qualified clinician. Verify every result independently before it informs patient care.
Training in Radiology?
Viewbox is free for radiology residents in India: daily spotter cases, timed OSCE-style exams, every calculator here, focus rooms, and a board of fellowships and jobs.