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CT · Coronary arteries / Heart

CT Coronary Angiography Report: CAD-RADS, Calcium Score, Stenosis

Hybrid AI + cardiac radiologist intelligence. Reports in 30 minutes. Critical findings escalated immediately.

What is a CT Coronary Angiography?
CT coronary angiography (CCTA) is a contrast-enhanced CT study with ECG gating that images the coronary arteries non-invasively, often paired with a non-contrast calcium-scoring scan (Agatston score). It is a high-resolution alternative to invasive coronary angiography for low-to-intermediate risk patients.
How long does a CT Coronary Angiography report take with 5C?
In India, 5C Network's hybrid intelligence workflow delivers structured CT Coronary Angiography reports in an average of 30 minutes, signed off by a cardiac radiology specialist. Emergency cases are prioritised for 15-minute turnaround.

When is a CT Coronary Angiography ordered?

Ordered for chest pain workup (especially with low-intermediate pre-test probability of CAD), atypical angina, suspected coronary anomalies, pre-operative cardiac risk assessment, and follow-up of known coronary disease or stenting. Calcium scoring is increasingly used in India for cardiovascular risk stratification in asymptomatic adults.

Hybrid Intelligence

How 5C reads a CT Coronary Angiography

Every CT Coronary Angiography on the 5C network is read by AI and a board-certified radiologist — never one without the other. Here's the 4-step workflow.

1
~30 sec

Bionic AI pre-read

Bionic — 5C's radiology AI trained on 3+ billion medical images — pre-reads the ct and flags findings for the radiologist's attention.

On this scan, Bionic flags:
  • coronary artery stenosis with CAD-RADS grading
  • calcified vs non-calcified vs mixed plaque morphology
  • Agatston calcium score with age-/sex-percentile context
  • coronary artery anomalies (origin, course)
  • myocardial bridging
  • stent patency and in-stent restenosis
  • left ventricular function clues
  • pericardial effusion
  • incidental thoracic findings (pulmonary nodules, aortic disease)
2
Cardiac radiology

Radiologist read

An NMC-registered cardiac radiology specialist from 5C's 400+ radiologist network reviews every image, validates or corrects AI findings, and adds clinical context.

  • NMC-registered, medico-legally valid in India
  • Subspecialty-trained for coronary arteries / heart
  • Available 24/7 across India time zones
3
NABH-aligned

QA & peer review

Critical and complex CT Coronary Angiography reads get a second-radiologist review. Random sampling across all reads supports continuous QA.

  • Double-reading on critical findings
  • Audit trail for medico-legal use
  • NABH-aligned escalation protocol
4
30 min avg

Structured report

Signed PDF report delivered to your PACS / RIS / email in an average of 30 minutes from the time of acquisition.

  • Structured findings + impression
  • 15-minute SLA for emergencies
  • Critical-finding phone escalation

What's in a 5C CT Coronary Angiography report

A standard 5C CT Coronary Angiography report is structured to be readable by the referring clinician, the hospital admin reviewing TAT, and any auditor checking NABH compliance.

1

Clinical history

Captures the indication — chest pain, atypical angina, pre-operative risk, CAD follow-up, calcium-score screening — along with cardiovascular risk factors (diabetes, hypertension, smoking, family history) and resting heart rate at acquisition.

2

Technique

Documents ECG-gating mode (prospective vs retrospective), beta-blocker / nitroglycerin pre-medication, contrast volume and bolus timing, slice thickness, and image-quality grade per coronary segment.

3

Calcium score (Agatston)

Non-contrast calcium scoring reported as a total Agatston score, broken down by coronary territory (LM, LAD, LCx, RCA), with age- and sex-percentile context to drive cardiovascular risk stratification.

4

CAD-RADS classification

Per-segment stenosis grading (none, minimal <25%, mild 25-49%, moderate 50-69%, severe 70-99%, occluded) summarised as a CAD-RADS 0-5 category with modifiers for stents, grafts, plaque vulnerability, and non-diagnostic segments.

5

Plaque and anomaly characterisation

Comments on plaque morphology (calcified, non-calcified, mixed), high-risk plaque features (positive remodelling, low-attenuation plaque, spotty calcification, napkin-ring sign), coronary anomalies, and myocardial bridging.

6

Impression

A prioritised summary — overall CAD-RADS category, calcium score with risk context, presence or absence of obstructive disease, stent / graft status, and recommendation for further functional testing or invasive angiography where appropriate.

7

Critical-finding escalation

Severe left main or proximal LAD stenosis, anomalous coronary with malignant course, or significant incidental findings (aortic dissection, large pulmonary embolus) trigger an immediate phone call from the 5C team to the referring clinician.

CT Coronary Angiography reads, across India

5C Network reports CT Coronary Angiography studies for 1,500+ hospitals and diagnostic centres across India — Bangalore, Mumbai, Delhi NCR, Chennai, Hyderabad, Kolkata, Pune, Ahmedabad, Kochi, Coimbatore, Jaipur, Lucknow, and 13 more tier-2 / tier-3 cities. NMC-registered, NABH-aligned, medico-legally valid.

See all coverage locations

Frequently asked questions

How long does a CT coronary angiography report take?

5C Network's average turnaround for a CCTA is 30 minutes from the time the study reaches our platform. CCTA is a post-processing-intensive study — curved multiplanar reformats, per-segment analysis, CAD-RADS grading, and calcium scoring all add time over a plain CT. Critical findings are still phoned through to the referring clinician.

Is CCTA as good as invasive coronary angiography?

For low-to-intermediate pre-test probability of CAD, CCTA has excellent negative predictive value — a normal CCTA effectively rules out obstructive disease and avoids an invasive procedure. For high pre-test probability or known severe stenosis, invasive coronary angiography remains the gold standard because it allows intervention in the same sitting.

What is calcium score?

The Agatston calcium score is a number derived from a non-contrast cardiac CT that quantifies calcified plaque burden in the coronary arteries. A score of 0 indicates very low cardiovascular risk; scores above 100 indicate moderate risk; above 400, high risk. 5C reports include age- and sex-percentile context so the score is interpreted relative to peers, not in isolation.

Do I need beta-blockers before CCTA?

CCTA image quality depends on a low, steady heart rate (ideally <65 bpm), so beta-blockers and sublingual nitroglycerin are commonly given before the scan. The decision is made by the referring clinician or the scanning centre based on the patient's baseline heart rate, blood pressure, and contraindications.

Can 5C report CCTA for low-risk chest pain?

Yes. CCTA for low-to-intermediate risk chest pain is a high-volume use case on the 5C network. Reports are read by cardiac-trained specialists in our 400+ radiologist panel, with CAD-RADS grading, calcium scoring, and clear recommendations for next steps — reassurance, medical management, functional testing, or invasive angiography.

Is CAD-RADS used in 5C reports?

Yes. Every CCTA report on the 5C network uses the CAD-RADS 2.0 framework — a structured, internationally recognised reporting system that maps stenosis severity, plaque burden, stent / graft modifiers, and image quality to clear management recommendations. This makes reports comparable across radiologists and easier for cardiologists to act on.

Integrate 5C CT Coronary Angiography reads at your hospital

30-minute average turnaround. AI + radiologist + QA on every read. NMC-registered, NABH-aligned, medico-legally valid in India. Pay-per-scan — no salary or locum commitments.