5 doctors weighed in:
What would a v/q scan tell a doctor about air flow through an affected part of the lung?
5 doctors weighed in

Dr. TAPAN CHAUDHURI
Nuclear Medicine
3 doctors agree
In brief: A LOT OF INFORMATIO
A v/q scan provides a lot of information to the doctor about the blood flow to the lung and airflow to the lung.
It is done to diagnose blood clot in the lung (pulmonary embolism-pe). If the affected part of the lung has impaired blood flow but normal airflow (called v/q mismatch) , a diagnosis of pe is entertained. If there is abnormal blood flow and abnormal airflow , then consider emphysema.

In brief: A LOT OF INFORMATIO
A v/q scan provides a lot of information to the doctor about the blood flow to the lung and airflow to the lung.
It is done to diagnose blood clot in the lung (pulmonary embolism-pe). If the affected part of the lung has impaired blood flow but normal airflow (called v/q mismatch) , a diagnosis of pe is entertained. If there is abnormal blood flow and abnormal airflow , then consider emphysema.
Dr. TAPAN CHAUDHURI
Dr. TAPAN CHAUDHURI
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Dr. Raymond Taillefer
Nuclear Medicine
In brief: Pulmonary emboli
The main reason to perform a radionuclide lung study for both ventilation (=v) and perfusion ( =q) is to detect lung embolism, usually caused by a blot clot originating from the legs or abdomen.
If there is some clots trapped in the lungs, there will be perfusion defects but the ventilation will remain normal. V/q scan can also be used to evaluate lung function in copd, cancer or severe disease.

In brief: Pulmonary emboli
The main reason to perform a radionuclide lung study for both ventilation (=v) and perfusion ( =q) is to detect lung embolism, usually caused by a blot clot originating from the legs or abdomen.
If there is some clots trapped in the lungs, there will be perfusion defects but the ventilation will remain normal. V/q scan can also be used to evaluate lung function in copd, cancer or severe disease.
Dr. Raymond Taillefer
Dr. Raymond Taillefer
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Dr. Joseph Rosin
Internal Medicine
In brief: Possible PE
It is done to look for signs that may support the diagnosis for a pulmonary embolism.
If the area of the lung is getting air flow, but not blood flow, this is a mismatch. That supports a diagnosis of pe if there is othe supporting evidence. If there is air flow and blood flow pe is less likely.

In brief: Possible PE
It is done to look for signs that may support the diagnosis for a pulmonary embolism.
If the area of the lung is getting air flow, but not blood flow, this is a mismatch. That supports a diagnosis of pe if there is othe supporting evidence. If there is air flow and blood flow pe is less likely.
Dr. Joseph Rosin
Dr. Joseph Rosin
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