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Doctor insights on: Pulmonary Ventilation Scan

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What are the differences between pulmonary perfusion scan and pulmonary ventilation scan?

What are the differences between pulmonary perfusion scan and pulmonary ventilation scan?

Lung V-Q scan: Ventilation scanning involves the patient breathing in a radiotracer while perfusion scanning involves injecting the radiotracer through an iv. The procedure is done usually to evaluate the presence of absence of a pulmonary embolism (usually a blood clot) and involves comparing the radiotracer's presence in the alveoli vs. Its presence in the lung circulation. ...Read more

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Breathing (Definition)

Breathing is the way we take in oxygen and expel carbon dioxide (co2) through out lungs. When our lungs expand we take fresh air in that contains oxygen and then when our lungs ...Read more


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Would a lung ct scan without contrast show lung blebs?

Would a lung ct scan without contrast show lung blebs?

Mgt: The imaging study may be uploaded to an inbox consult for review. The CT study can demonstrate blebs. If you are a smoker, I would advise quitting. ...Read more

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What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?

Lack of blood flow: A ventilation perfusion scan is a test for a blood clot in the lungs, or pulmonary embolism. If there is a blood clot, an area of the lung will not be perfused, but will be ventilated, and therefore a mismatch will be seen. ...Read more

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Vq scan and pulmonary embolism? How accurate is the scan?

Vq scan and pulmonary embolism?  How accurate is the scan?

Not realy very: Ventilation/perfusion scan (v/q scan or lung scintigraphy), which shows that some areas of the lung are being ventilated but not perfused with blood (due to obstruction by a clot). This type of examination is used less often because of the more widespread availability of ct technology, however, it may be useful in people who have an allergy to iodinated contrast or in pregnancy. Thanks. ...Read more

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Would Cardiac stress perfusion scan MRA highlight Pulmonary Hypertension if this was present?

Would Cardiac stress perfusion scan MRA highlight Pulmonary Hypertension if this was present?

Probably not: A cardiac echo/Doppler study would show pulmonary HTN changes by viewing the right ventricular function , size and pressure. There are additonsl studies that can also be done. It is very important to know WHY you have Pulmonary HTN. If due chronic Pulmonary embolism it is a serious situation for which there exists very effective Rx. Other causes can also be treated. Consult your doc. ...Read more

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CT scan "findings" says known pulmonary emboli identifies and subsegmental are not excluded. The " impression" says no pulmonary embolism. clot?

CT scan "findings" says known pulmonary emboli identifies and subsegmental are not excluded. The " impression" says no pulmonary embolism. clot?

CT scan using contra: CT scan using contrast is very accurate tool for the diagnosis of pulmonary embolus Patients should be capitalized, ultrasound of the lower extremities, pelvis and IVC should be performed. The current embolism may require placement of and IVC filter. ...Read more

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Can chest x-ray show pulmonary aspiration?

Can chest x-ray show pulmonary aspiration?

Yes: Chest x-ray can often show pulmonary Aspiration however small amount it may not show or it may not be visible for a couple of days on chest x-ray ...Read more

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Why would a pulmonary ventilation/perfusion scan be performed?

Pulmonary Embolism: The main reason to perform a pulmonary ventilation-perfusion (v-q) scan is to rule out the presence of a pulmonary embolus (commonly a blood clot). There are several forms of pulmonary thrombo-embolism, but the most common situation is one of sudden onset, leading to sob. Chronic thrombo-embolism leads to development of sob over a long period and it can also be diagnosed with a v-q scan. ...Read more

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What's difference between High HD Contrast CT scan vs Normal Chest CT with contrast evaluating interstitial lung markings?

What's difference between High HD Contrast CT scan vs Normal Chest CT with contrast evaluating interstitial lung markings?

Different chest CTs: High resolution chest CT usually with out intravenous contrast is used to define interstitial lung disease pattern, whether diffuse or localized process. CT of chest examination with contrast intravenously usually looking for tumors or metastases and acute infection in the lungs. ...Read more

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Could an echocardiogram detect pulmonary disease/pulmonary hypertension?

Could an echocardiogram detect pulmonary disease/pulmonary hypertension?

ECHO for PH: Pulmonary hypertension (ph) is often first detected by echocardiogram (echo) which estimates the pulmonary artery systolic pressure. The diagnosis is confirmed by right heart catheterization which measures mean pulmonary artery pressure and resistance. ...Read more

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Ct chest adrenal nodule 1.9 CM right. Lungs demonstrate babisalar dependent atelectasis small subpleural bullae noted right up lobe trace pericardial?

Ct chest adrenal nodule 1.9 CM right. Lungs demonstrate babisalar dependent atelectasis small subpleural bullae noted right up lobe trace pericardial?

Adrenal eval: Hi. The adrenal nodule needs to be evaluated. What were the Hounsfield units on the non-contrast scan of the nodule? Your endocrinologist will determine: 1) if it's producing any hormones, and 2) if it's growing. If high Hounsfield units, it needs sooner evaluation. Any hirsutism, amenorrhea, diabetes, serious high blood pressure, sweating, headache, palpitations, etc? Good luck! ...Read more

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Is it safe to smoke after a myocardial perfusion scan thallium scan cardiac nuclear imaging?

Is it safe to smoke after a myocardial perfusion scan thallium scan cardiac nuclear imaging?

Well...: Since you had a cardiac nuclear scan, I assume your doctors were looking for coronary artery disease. You seem to be a smoker, which makes artery disease worse. So smoking is not a good thing for you, and you should try to stop. Having said that, you are probably not in any more immediate risk for heart problem for smoking after the nuclear exam. Long term risks are greater with smoking. ...Read more

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What person needs a lung ventilation/perfusion scan?

What person needs a lung ventilation/perfusion scan?

: Folks with a suspicion for blood clot in the lung. This may be due to spells of breathlessness or chest pain or both. More common if there is blood clots in the leg (phlebitis). ...Read more

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Would echo scan show aortic insufficiency?

Would echo scan show aortic insufficiency?

Yes: An echocardiogram will usually show if you have significant aortic stenosis or insufficiency. ...Read more

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Dr order pulm. Ventilation/perfusion scan for tachardyia and sob. Have normal chest x-ray, ekg, pulmonary test and blood work. Odds it's an embolism?

Odds don't count: Stastitics are only guidelines and don't apply to individual cases. A lung scan (v/q) is accurate if it is considered high probability or normal. The " gold standard" is computerized angiogram of the chest which is very accurate both to diagnose or exclude pulmonary embolism. Talk to your md. If you have no medical contraindications, i would prefer the ct angiogram. ...Read more

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31 m - Is a bronchoscopy / chest Ct scan with contrast and Vq scan good enough to rule out lung cancer or lung problems ?

31 m - Is a bronchoscopy / chest Ct scan with contrast and Vq scan good enough to rule out lung cancer or lung problems ?

Lung eval: That is a very through evaluation and should be sufficient . You could see masses, tumors, emphysema, frbrrosis, note if abnormal cells, tell if there are emboli. Adding pulmonary function testing (PFTs) would assess the function i.e. tell if you have asthma . f/u/ w/ doc ...Read more

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Dr. Jon Fishburn
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Respiratory (Definition)

Pertaining to the work of breathing done by the chest ...Read more