Chest Pain Imaging Workup — What Precise Imaging Can and Can't Do

Chest pain is one of the most common reasons patients seek care. The work-up depends on the clinical context — acute versus chronic, exertional versus rest, and the patient's risk profile. This article focuses on the imaging studies Precise Imaging actually performs and how they fit into the work-up. It does not cover acute, life-threatening chest pain, which belongs in an emergency department.

If you are having sudden, severe chest pain, shortness of breath, fainting, or other signs of a possible heart attack or pulmonary embolism, call 911 or go to the nearest emergency department immediately. This article is educational and does not replace medical advice.

Step one: rule out emergencies

Acute chest pain is first evaluated in an emergency setting with history, examination, ECG, and laboratory testing (including troponin). Imaging in the acute setting frequently includes bedside echocardiography, CT pulmonary angiography for pulmonary embolism, and CT angiography for suspected aortic dissection. Outpatient imaging centers like Precise Imaging are not the right setting for that initial work-up.

Outpatient imaging for stable chest pain

Once acute causes are excluded — or when the pattern is chronic and stable — outpatient imaging supports two main clinical questions: what does the coronary anatomy look like? and is there structural or tissue-level heart disease?

CT angiography for coronary anatomy

Coronary CT angiography (CCTA) uses iodinated contrast and a fast CT scanner to image the coronary arteries directly. It is most useful for stable patients with low-to-intermediate pretest probability of coronary disease in whom an anatomic study can confidently exclude obstructive disease. Precise Imaging performs CT angiography at select locations. Your cardiologist will decide whether CCTA fits your situation.

Cardiac MRI for structural and tissue evaluation

Cardiac MRI is the gold standard for tissue characterization. It identifies scar, fibrosis, edema, and infiltration that other tests miss. It is most useful when the suspected diagnosis involves the myocardium itself — myocarditis, infiltrative disease, cardiomyopathy, or post-infarct viability — rather than the coronaries. See our when to get a cardiac MRI guide for the most common indications.

Studies Precise does not offer

Many studies have a role in chest-pain work-up but are not part of the Precise service line. We do not currently offer:

• Echocardiography (transthoracic, transesophageal, or stress echo).
• Calcium-score CT for primary-prevention risk stratification.
• Nuclear stress imaging (SPECT or PET MPI).
• Cardiac PET.
• Invasive coronary angiography.

When your cardiologist orders one of these, they will refer you to a center that performs it. We list this honestly so patients and providers can plan the right work-up without assuming we cover every modality.

Choosing between cardiac MRI and CTA

In broad strokes:

• CTA answers, what does the coronary anatomy look like, and is there obstructive disease?
• Cardiac MRI answers, what does the heart muscle look like, and is there scar, inflammation, or impaired function?

Many patients ultimately need both — or neither. Decisions belong to your cardiologist.

What to expect at Precise

Both cardiac MRI and CT angiography are scheduled appointments that require a physician's order and an IV for contrast. Plan for 45 to 75 minutes in the scanner for cardiac MRI and 30 to 45 minutes for CCTA. Both studies are read by sub-specialty radiologists and reported to the ordering provider within 24 to 48 hours.

Frequently asked questions

Do I need a referral? Yes. Both cardiac MRI and CT angiography require a physician's order specifying the protocol and clinical indication. Your cardiologist or primary care physician can place the order, and our scheduling team will help confirm the right protocol and any preparation steps before your visit. If a recent ECG, stress test, or echocardiogram has already been performed, ask your provider to forward those results so the radiologist can interpret your scan in context.

Can I eat or drink before the scan? For most cardiac MRI studies you can eat and drink as usual, but a vasodilator stress component (regadenoson or adenosine, when ordered) requires no caffeine for 24 hours. CCTA frequently uses a short-acting beta blocker to slow the heart rate; your provider will give you specific instructions when the study is ordered.

Will I feel anything from the contrast? Iodinated contrast for CCTA often produces a warm sensation and a brief metallic taste — both are normal and pass within seconds. Gadolinium for cardiac MRI is generally well tolerated, with most patients reporting no sensation at all. Significant reactions are rare; our staff screen for prior reactions and kidney function at scheduling.

How fast will the report be available? Final reports are typically signed by a sub-specialty cardiac radiologist within 24 to 48 hours and sent directly to the ordering provider. STAT reads are available on request when clinically warranted.

What if I have an implanted device? Most modern pacemakers, defibrillators, and loop recorders are MRI-conditional and can be scanned safely with the right settings, but our screening team needs the device make and model in advance to confirm compatibility and program the appropriate protocol.

Related Precise services

The two services on the Precise side of a chest-pain work-up are cardiac MRI and CT angiography. Both are scheduled outpatient studies that require a physician's order, an IV for contrast, and ECG monitoring for cardiac-gated sequences. Patients with prior MRI of any kind can also see our general MRI service page for facility locations and 1.5T versus 3T availability.

Disclaimer

This article is for general patient education and does not replace medical advice from your physician. Imaging studies should be ordered and interpreted by qualified providers in the context of your individual history.

For more, see when to get a cardiac MRI, what cardiac MRI shows, and CT angiography explained, or explore the cardiac imaging hub.