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What is


Pending FDA Clearance for Patient Care

Available Only for Research Studies


The first automated supervised AI solution

For a 1 HR rule-out of patients with chest pain, based on their coronary artery calcium (CAC) score.


130 million visits to the ED every year (CDC)

8%-10% are for symptoms of acute chest pain, up to 13 million visits a year. About 50% of these patients —across all age groups— have a diagnosis of nonspecific chest pain, unrelated to any cardiac condition.


The majority of ED patients with suspected acute coronary syndrome (ACS) fall below the 1% risk threshold of a 30-day major adverse cardiac event (MACE).


Chest pain & avoidable ED stay

Over 50% of patients with chest pain receive extensive and lengthy evaluations, with a national annual cost of $10-$13 billion.

Rapid screening using coronary artery calcium (CAC) testing with patients who are low- to intermediate-risk can rule-out obstructive coronary artery disease (CAD) in more than 99% of the patients.

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R/O chest pain in 1 HR with AutoCAC™


Why use AutoCAC™?

Consistent accuracy with 24/7 availability & rapid results in less than 30 minutes.



HeartLung Patient app to perform post-discharge self-report triage and to schedule follow-up outpatient appointments.


AutoCAC™ leadership team, led by Dr. Matthew Budoff, who has a pioneering record in CAC research.


Business intelligence from HeartLungApp data can guide hospital management with ED-related key performance indicators (KPI).


Positive PR for first-mover advantage to reduce unnecessary ED stay for patients and their relatives.


HeartLung™ also offers full chest CT report for EDs without overnight or 24/7 tele-radiology capability.


Incorporating AutoCAC™ can increase ED revenue by over 25%.

What is the AutoCAC™ process?

Your ED Problem:

Overcrowding, congested patient flow, and inefficient use of ED staff, time, and resources.

AutoCAC™ solution

By utilizing AutoCAC™, with a patient CAC Zero score, ED time can be lowered from 20-24 HRS to less than 1 HR.

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AutoCAC™ value propositions

01. Reduce unnecessary ED time

  • Significantly decrease ED time and resources for low-risk/low-revenue patients, allowing for focus on high-risk/high-revenue patients.

  • Cut the number of patients sent to additional (and excessive) testing or invasive procedures.

  • Less staff documentation required regarding test procedure, results, and recommendations for patients with CAC Zero.

02. Reduce potential ED liabilities

  • Decrease the risk of misdiagnoses and inadvertent discharge of patients with acute coronary syndrome (ACS).

  • Ensure that atherosclerotic patients with high CAC scores are not discharged without proper preventative care recommendations.

  • Discharge low-risk patients with peace of mind and reduced potential liability; ED is following current AHA/ACC guidelines.

03. Increase ED revenue by >25%

  • Efficient patient flow allows for ability to see and treat more patients.

  • Low-risk, low-revenue patients with chest pain can be safely discharged to accommodate high-risk, high-revenue cases.

  • First-mover advantage can boost positive PR around shorter ED stay for patients and their families.


The first automated supervised AI solution

Coronary Artery Calcium Scoring


Traditional Approach is not sufficient

Chula Vista Hospital and Sharp Grossmont Hospital had been averaging more than 30 hours for patients with low-risk chest pain. By getting labs done faster and decreasing the frequency between draws, they were able to reduce patient time to 20-24 hours. We had to influence physician behavior to shift from traditional to more evidence-based practice.

Reference PMID: 18476659
Critical Path Network: LOS project drops ED stay for low-risk chest pain patients

CAC is recommended in latest Guideline for Evaluation and Diagnosis of Chest Pain

Class of Recommendation


Level of Evidence



For patients with stable chest pain and no known CAD categorized as low risk, CAC testing is reasonable as a first-line test for excluding calcified plaque and identifying patients with a low likelihood of obstructive CAD.

Ref. Galati M et al. 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR Guideline for the Evaluation and Diagnosis of Chest Pain: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines

Pending FDA Clearance for Patient Care

Available Only for Research Studies

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What is calcium score?

A Calcium Score -also called a Coronary Artery Calcium (CAC) Score or Agatson Score- detects and measures any calcified plaque in the coronary arteries.

It is a highly specific marker for coronary atherosclerosis, and therefore is useful as a risk-stratification tool when assessing patients with chest pain. CAC is effective regardless of age, gender, and risk factor burden.

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Are there patients who should NOT have an AutoCAC™ scan?

AutoCAC™ is not appropriate for assessment with the following patients:


Unstable Chest Pain


Under 40-years-old

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Known cardiovascular heart disease


The CAC score is a good predictor of a heart attack

The greater the coronary calcium score, the larger the amount of plaque there is in the artery wall, and the greater the risk of a heart attack.

Besides the CAC score, calculations are made to assign a 25th, 50th, 75th, or 90th percentile of the calcium score distribution for a particular age, gender and race.

The app for your patients


Our patient app allows patients to download their AutoCAC report within one hour; directs them to schedule their outpatient follow-up; and permits you to keep track of their post-ED health status through a daily EDACS questionnaire.

Patients will be able to:

  • View their AutoCACscore and share it with their health care providers.

  • Complete the daily EDACS questionnaire for documentation and your review.

  • Schedule follow-up appointments and receive reminders.


Pending FDA Clearance for Patient Care

Available Only for Research Studies

Want to know
more about
Calcium Score?

Request a call back

Let us call you to answer any questions you might have about AutoCAC™.

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