Glasshaus Imaging · Cardiac MRI reading

Cardiac MRI reading services for hospitals and imaging centers

Remote cardiac MR reads by a cardiothoracic radiologist certified by the Certification Board of Cardiovascular Magnetic Resonance. No PACS or IT build on your side.

Request coverage Common questions
  • Cleveland Clinic fellowship-trained
  • Board-certified (ABR, CBCMR)
  • Licensed in 38 states
  • Routine reads within 24 hours

Read and reviewed by Giovanni E. Lorenz, DO, Cleveland Clinic fellowship-trained cardiothoracic radiologist. Board-certified: American Board of Radiology; Certification Board of Cardiovascular Magnetic Resonance. Last reviewed .

Illustrative footage

Turn your MR scanner into a cardiac MR service

Cardiac MR answers questions other tests can’t: scar and viability, myocarditis, cardiomyopathy, infiltrative disease and exact ventricular volumes. Many sites could offer it but have no one trained to read it. Glasshaus is that reader, for hospitals, imaging centers and cardiology groups in 38 states.

  • Use the scanner you already have

    If your site has a 1.5T or 3T scanner with a cardiac package but no one to read cardiac MR, we read it remotely so the studies can be ordered.

  • Access where readers are scarce

    A 2025 Medicare study found 991 cardiac MR readers in 2022, and 50.8 million people living more than 50 miles from one.1

  • Guideline-backed tests

    Stress CMR has a Class 1 recommendation for diagnosing ischemia in several chest pain settings,2 and CMR is central to diagnosing suspected myocarditis.3

  • IT-ready, 24-hour routine reads

    No PACS or IT build on your side. Routine studies back within 24 hours, STAT within 1 to 2 hours, Monday to Saturday.

Sample cardiac MR short-axis image of both ventriclesSample cardiac MR native T1 map of the left ventricle in colorSample 3D volume-rendered cardiac MR angiogram of the heart and thoracic aorta
Sample cardiac MR images. Illustrative only.

What we read

  • Function and volumes

    LV and RV volumes, ejection fraction and mass.

  • Scar and viability

    Late gadolinium enhancement (LGE) for infarct, scar and viability.

  • T1 and T2 mapping, ECV

    Quantitative tissue characterization for edema, fibrosis and infiltration.4

  • Stress perfusion

    Vasodilator stress perfusion for ischemia.

  • Flow quantification

    Phase-contrast flow for valve disease, shunts and congenital heart disease.

  • Cardiomyopathy

    Hypertrophic, dilated, arrhythmogenic and other cardiomyopathies.

  • Myocarditis

    Assessment using the updated Lake Louise criteria.3

  • Infiltrative disease

    Cardiac amyloid, sarcoid and iron overload.

  • Pericardial disease

    Pericarditis, effusion and constriction.

  • Cardiac masses

    Characterization of masses and thrombus.

  • Congenital heart disease

    Anatomy, function and shunt quantification.

  • Aortic MRA

    Thoracic aorta size and anatomy.

Cardiac MRI CPT codes

  • 75557Cardiac MRI for morphology and function without contrast material
  • 75559Cardiac MRI for morphology and function without contrast material; with stress imaging
  • 75561Cardiac MRI for morphology and function without contrast material(s), followed by contrast material(s) and further sequences
  • 75563Same as 75561; with stress imaging
  • +75565Cardiac MRI for velocity flow mapping (add-on to 75557 to 75563)
  • +0899T / +0900TCategory III add-ons: absolute quantitation of myocardial blood flow from contrast stress CMR (augmentative and assistive algorithmic analysis)

Descriptors summarized from SCMR’s CMR codes page. CPT is a registered trademark of the American Medical Association. Coverage varies by payer.

Cardiac MRI reading: common questions

Can you read cardiac MR remotely for our hospital or imaging center?

Yes. Glasshaus is IT-ready. Studies route from your scanner to our reading platform, or we read on your PACS. We are licensed in 38 states, and routine studies come back within 24 hours.

What cardiac MR studies do you read?

Function and volumes, late gadolinium enhancement for scar and viability, T1 and T2 mapping with ECV, stress perfusion, flow quantification, cardiomyopathy, myocarditis, amyloid and sarcoid, pericardial disease, cardiac masses, congenital heart disease and aortic MRA.

Which CPT codes cover cardiac MRI?

The base cardiac MRI codes are 75557, 75559, 75561 and 75563, depending on contrast and stress. Velocity flow mapping is add-on code 75565. Quantitative myocardial blood flow from stress perfusion has Category III add-on codes 0899T and 0900T. Check coverage with your payers.

Is cardiac MRI supported by guidelines?

Yes. The 2021 AHA/ACC chest pain guideline gives stress CMR a Class 1 recommendation for diagnosing ischemia in several chest pain settings, and the 2024 ACC myocarditis pathway places CMR at the center of diagnosing suspected myocarditis.

Sources: 1 El Yaman et al., access to CMR readers in the U.S., Medicare Part B data (J Cardiovasc Magn Reson, 2025). 2 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR chest pain guideline. 3 2024 ACC expert consensus decision pathway on myocarditis (JACC). 4 SCMR/EACVI consensus on T1, T2, T2* and ECV mapping (J Cardiovasc Magn Reson, 2017).

Need a cardiac MR reader?

Tell us your modalities, states and volume. We’ll reply within one business day with a coverage plan and an onboarding date.

Email Dr. Lorenz

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