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Coronary computed tomography angiography (CCTA) is a noninvasive imaging modality that uses multidetector computed tomography with intravenous contrast to visualize the coronary arteries, cardiac anatomy, and surrounding structures with high spatial resolution. This modality enables accurate assessment of coronary artery stenosis, plaque morphology (calcified, noncalcified, or mixed), and congenital or anomalous coronary anatomy. CCTA plays a central role in evaluating patients with stable chest pain, equivocal stress testing, or low-to-intermediate pretest probability of coronary artery disease, offering an excellent negative predictive value and facilitating early diagnosis, risk stratification, and preventive management. Through participation in this course, clinicians strengthen their ability to appropriately select patients for CCTA, interpret key imaging findings, and integrate results into evidence-based clinical decision-making. Learners gain practical knowledge of technical considerations, image acquisition, radiation dose optimization, and common pitfalls, as well as an understanding of how CCTA compares with functional testing and invasive angiography. The course also emphasizes interdisciplinary collaboration among cardiologists, radiologists, technologists, and referring clinicians to optimize diagnostic accuracy, patient safety, and downstream care planning. Objectives: Identify appropriate candidates for coronary computed tomography angiography based on clinical indications and pretest coronary artery disease probability. Differentiate between the indications and contraindications for coronary computed tomography angiography compared to other coronary artery disease evaluation modalities, such as stress testing or invasive coronary angiography. Assess coronary computed tomography angiography images effectively to identify and evaluate coronary artery stenosis, plaque characteristics, and other relevant findings. Collaborate with radiologists and cardiologists in interpreting coronary computed tomography angiography results and developing appropriate treatment plans. Access free multiple choice questions on this topic.

Chest pain is the most common symptom of coronary artery disease (CAD), posing a significant diagnostic challenge for clinicians. Despite remarkable strides in medical and procedural treatments, cardiovascular disease persists as a major global health concern. Addressing this burden demands timely and cost-effective diagnostic tools. Coronary computed tomography angiography (CCTA) is a crucial diagnostic modality for CAD assessment. This noninvasive approach is invaluable for patients with low-to-intermediate pretest probabilities of ischemic heart disease, underscoring its role in evaluating stable patients who do not require immediate revascularization.[1][2][3] While invasive coronary angiography remains the diagnostic gold standard, CCTA is increasingly recognized as a noninvasive, low-risk alternative. This modality circumvents the hazards associated with invasive procedures and expedites assessments for patients at intermediate risk of CAD. Given the minute dimensions and dynamic nature of epicardial coronary arteries, CCTA requires precise spatial and temporal resolution. Spatial resolution determines the smallest distinguishable distance between 2 points, while temporal resolution dictates how rapidly images of moving structures can be captured. With the advent of 64-slice multi-detector CT systems and contemporary technologies, CCTA now boasts the necessary spatial and temporal resolution to visualize even the most distal coronary artery segments (see Image. Coronary Computed Tomography Angiography).

CCTA testing centers should be equipped and staffed to manage the rare complication of anaphylaxis to any agent administered during testing. Standard oral steroids and pre-test diphenhydramine should be prescribed when specific contrast allergies are documented. CT scans use x-rays, an ionizing radiation that can damage cells on a molecular level. The potential for harm from radiation exposure is cumulative over a patient’s lifetime. Thus, children and young adults are particularly at risk. Organs with high cellular turnover are also at increased risk for genetic damage from ionizing radiation exposure. Radiation exposure during CCTA should be as low as reasonably achievable to obtain diagnostic results.

High-quality use of CCTA requires a coordinated, interprofessional strategy that aligns clinical judgment, technical expertise, and patient-centered decision-making. Clinicians must apply evidence-based risk stratification to identify appropriate candidates—particularly patients with stable or acute chest pain and intermediate pretest probability of coronary artery disease—while integrating CCTA results with clinical context to guide downstream management. Radiologists and cardiologists contribute specialized imaging interpretation skills, ensuring accurate assessment of coronary anatomy, plaque burden, and stenosis severity. Nurses play a critical role in patient preparation, including heart rate control, intravenous access, allergy screening, and patient education, which directly impacts image quality and safety. Pharmacists support safe medication use by advising on beta-blocker and nitrate administration, managing contrast-related risks, and reviewing potential drug interactions, particularly in patients with renal disease or complex medication regimens. Effective interprofessional communication and care coordination are essential to optimize outcomes and minimize unnecessary testing or delays in care. Clear protocols and closed-loop communication among emergency medicine, cardiology, radiology, nursing, and pharmacy teams facilitate timely imaging, appropriate contrast use, and rapid reporting of results. Shared decision-making with patients—supported by consistent messaging from all team members—enhances understanding of the test's purpose, risks, and implications of the findings. Coordinated follow-up planning ensures that abnormal results prompt appropriate preventive therapy or referral, while normal studies safely reduce unnecessary admissions and invasive testing. Through collaborative workflows and defined roles, the healthcare team can leverage CCTA to improve diagnostic accuracy, patient safety, and overall team performance.