Right Ventricular Output, Magnetic Resonance
This test uses magnetic resonance imaging (MRI) to measure how much blood your right ventricle pumps out with each heartbeat and over a minute. It helps your care team see how well the right side of your heart is working.
["The test provides a noninvasive MRI-based measurement of right ventricular pumping function to help assess heart performance."]
Key facts at a glance
- LOINC
- 106761-0
- Short code
- RV Output MR
- Synonyms
- RV Output MR
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mr
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The right ventricle is the lower right chamber of your heart. It pumps blood to your lungs, where oxygen is added. This test estimates the volume of blood the right ventricle ejects per beat (stroke volume) and per minute (cardiac output) using MRI images of your heart.
How the Test Is Done
You lie still inside an MRI scanner while it takes detailed pictures of your heart. The scan is painless and does not use X-rays. You may be asked to hold your breath briefly at times. The images are then analyzed to calculate right ventricular output.
Why Your Doctor May Order It
Your doctor may order this test to evaluate right heart function in conditions such as pulmonary hypertension, congenital heart disease, or other heart or lung problems. It can also help monitor how your heart responds to treatment over time.
What to Expect
The scan usually takes a portion of an hour, and you can generally go home afterward. Because MRI uses a strong magnet, tell the staff about any implants, metal devices, or pacemakers before the test. Results are interpreted by a doctor and shared with your care team.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Right ventricular output is an important indicator of how effectively the heart delivers blood to the lungs. Reduced output may suggest right heart strain or dysfunction, while the measurement helps guide diagnosis and treatment decisions. Values are interpreted alongside your symptoms, other imaging, and clinical context.
Short name
RV Output (MRI)
Frequently asked questions
Does this test use radiation?
Will I need to prepare for the scan?
Can I have this test if I have a pacemaker or implant?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy