The Coronary Artery Calcium (CAC) scan is a common, non-invasive imaging tool used to assess an individual’s long-term risk for a heart attack. This specialized computed tomography (CT) scan visualizes and quantifies calcified plaque buildup within the coronary arteries. While the procedure is quick, understanding the logistical timeline for receiving the final score and its interpretation can manage expectations. This timeline involves the scan itself, the professional review process, and the necessary follow-up consultation with a physician.
Understanding the Coronary Calcium Scan Procedure
The CAC scan is a straightforward test that uses a high-speed CT machine to take detailed cross-sectional images of the heart. This imaging detects and measures the concentration of calcified plaque in the coronary arteries. The resulting data is used to calculate an Agatston score, which estimates the extent of atherosclerosis.
The time spent in the CT scanner is often only a few seconds, though the total procedure time in the clinic is typically 10 to 15 minutes. Before the scan, electrodes are placed on the chest to monitor the heart’s electrical activity. This synchronization allows the scanner to capture clearer images by timing the imaging with the patient’s heartbeat. Patients can leave immediately after the brief scanning period.
Standard Timeframe for Receiving Your Score
After the images are acquired, computer software processes the data to generate the initial calcium score. This score is then sent to a board-certified radiologist, who reviews the images and generates a formal, signed report. This professional interpretation step is the primary reason for the delay before the patient receives the final result.
The speed of the final report depends on the facility type and its workload. Large imaging centers or hospitals with dedicated cardiac teams may make preliminary results available within 24 to 48 hours, sometimes via a secure patient portal. However, the official report is typically sent to the referring physician within three to seven business days.
The referring physician’s office must review the report before releasing the results to the patient. This step ensures the doctor can contextualize the score with the patient’s medical history and prepare a plan for discussion. If a patient has not heard back within one week of the procedure, they should contact the ordering physician’s office for a status update.
How Results Are Communicated and Next Steps
Once the physician’s office receives the final report, results are commonly communicated through one of three methods. Many healthcare systems utilize secure electronic patient portals, allowing the score to be viewed shortly after the doctor has reviewed it. Other offices may deliver the score over the phone or during a scheduled follow-up consultation.
The calcium score is a number that must be interpreted by a medical professional. A score of zero suggests a very low risk of a heart attack, while higher scores indicate a greater presence of calcified plaque. Based on the Agatston score, the doctor will outline next steps, which may include lifestyle modifications, such as dietary changes and increased exercise. For elevated scores, the physician may prescribe medications like statins or suggest further diagnostic tests, such as a stress test, to evaluate cardiac function.