Top

30

Doctor insights on: Causes Of Altered Tissue Perfusion

Shouldn't: A myocardial perfusion scan shouldn't cause a cough. Perhaps a mild allergy is present but this is extremely rare. A ventilation-perfusion scan may cause a cough primarily due to the ventilation scan component. People who get these tests often have underlying medical problems associated with cough, and that would be the primary reason for the cough, not the scan. ...Read more

Many methods...: Depending on which tissue you are talking about, there are many ways. Brain perfusion is reflected in level of consciousness. Kidney perfusion is assessed by adequacy of urine production and laboratory tests. Perfusion of the extremities can be assessed by skin color and tone as well as radiologic tests and angiography and other laboratory tests. ...Read more

Movement: Am unclear as to your question, but if I understand right, then moving during the scan would cause problems. Not removing a bra containing wires could cause problems. Severe claustrophobia can also cause problems. ...Read more

No: Coronary blood flow depends on the caliber of the blood vessels as well as the pressure. This is a good BP for anyone. How you feel is important too. ...Read more

No: No, not that I can think of. ...Read more

Depends: It depends on if it is steroid responsive or not. Treatment can vary - it needs to be individualized. ...Read more

Cerebral perfusion: Nothing is 'supposed' to cause poor cerebral perfusion. When cardiac function becomes poor enough to decrease cardiac output and or blood pressure enough to perfuse the brain adequately, then the patient is in serious trouble. This usually happens only with severe cardiac dysfunction and often has associated cerebral vascular disease. ...Read more

No: I work in a cardiac cath lab and my nurse was pregnanat and wore a badge outside her lead apron. It received essentially zero radiation despite hours and hours of exposure. The key is the inverse square law. The radiation drops off very quickly as you move inches away from the source (the patient's bloodstream). You have had a negligible exposure - you get more on a sunny day! ...Read more

Imaging Artifact: Soft tissue attenuation in the breast is a common artifact in myocardial perfusion imaging. It may artifactually affect the depiction of activity in the myocardial wall. If perfusion defect is seen on both stress & rest images and normal wall motion & wall thickness shown on ecg-gated spect then apparent fixed defect is an artifact of attenuation instead of an area of myocardial infarction. ...Read more

Blood flow.: Perfusion usually refers to blood flow into an organ or organ system. ...Read more

Prior heart attack: This represents either evidence of a prior heart attack or an area of the heart receiving very poor blood flow from a blocked artery. ...Read more

Blocked artery: It means you may have had a heart attack to the bottom part of the heart. Some of it is scar and some is viable. ...Read more

Need both: Not sure what you are referring to regarding perfusion being more important than ventilation. In regards to a lung perfusion ventilation scan, a mismatch between perfusion and ventilation is abnormal and can suggest pulmonary disease. Ventilation delivers oxygen to the blood via the lungs, then perfusion (blood) delivers the oxygen to the body, so both are important. ...Read more

A way to demonstrate: The absence of a lung clot.

Perfusion scan: Read this:

http://www. Hopkinsmedicine. Org/healthlibrary/test_procedures/cardiovascular/myocardial_perfusion_scan_stress_92, P07979/

MRI Perfusion: Perfusion MRI is an advanced MRI technique which shows whether blood flow to regions of the brain is normal or abnormal. In the picture above, in the right upper part of the image, there is a dark area showing an area of brain stroke in the frontal lobe. The technique requires injection of gadolinium contrast through an IV. In addition to stroke, it can also be used to diagnose tumors or infection ...Read more

Blood clots in lungs: It's a nuclear test to look for blood clots in the lungs. It has been largely replaced with high resolution spiral ct scans. ...Read more

Let me try to: Myocardial perfusion scan is a nuclear medicine procedure that illustrates the function of the heart muscle (myocardium). It evaluates many heart conditions from coronary artery disease to hypertrophic cardiomyopathy and myocardial wall motion abnormalities. The function of the myocardium is also evaluated by calculating the left ventricular ejection fraction (lvef) of the heart. Good luck. ...Read more

Stress Test: That uses a radioactive tracer to evaluate blood flow in the coronary arteries. Images are taken at peak exercise and at rest. These images are able to compare blood flow to the heart in specific territories supplied by each coronary artery and any flow disparity would be consistent with a potential blockage in that artery. ...Read more

Dx Pulmonary Embolus: A ventillation perfusion lung scan is a nuclear test used to diagnose a blood clot to the lung or pulmonary embolus. Medication is injected into your vein and you also breath a medication into the lung to look for a mismatch on a nuclear imaging camera which would suggest a pulmonary embolus. ...Read more

Perfusion scans: The main risks to these studies relate to the exercise stress used and to the radiation exposure. In general both are very well controlled and the complications and negative outcomes to these studies are very few and uncommon in good labs. The commonest side effects are with Persantine and Adenosine used to simulate exercise. Regadenoson a newer agent has few side effects. ...Read more

Coronary Blood flow: Cardiac perfusion imaging is typically obtained to evaluate a pateint's coronary blood flow. This assesses the blood supply to the heart muscle, which is delivered through relatively small arteries around the heart called the coronary arteries. If the test is normal, it suggests that there is no significant CAD (coronary artery disease). If abnormal, CAD may be present. ...Read more

Demand not met: It means that there are areas of the heart that likely do not get enought blood when exercise. The demand for oxygen in the cardiac muscle are higher than what it is provided to them ...Read more

Perfusion scan: The reporter is suggesting an area of reduced blood flow to a part of your heart;go and see your ordering physician as soon as possible ...Read more

Normal risk: 6 weeks is plenty of time for the body to clear the radiation you were exposed to. There is no increased risk of birth defects after the 6 weeks, but remember, there are always risks, even when one has not been exposed to radiation. If you have specific reasons for fearing birth defects, talk to mfm (maternal -fetal-medicine) doctor prior to conception and make sure to take your folate (folic acid) vitamins. ...Read more

See a cardiologist: While not alarmingly so, this is an abnormal stress perfusion study, which might indicate coronary artery disease. Please see a cardiologist. ...Read more

Find Bockages: Myocardial perfusion imaging is typically combined with exercise. This test is used to diagnose coronary artery disease in patients with typical symptoms or patients with high risk for coronary artery disease. ...Read more

Radiological test: A ventilation-perfusion (v/q) scan is a specialized radiological lung test comparing mismatches between any part of your lung that still exchanges oxygen (affected in COPD e.g.) and any part that is not receiving blood flow. This is done through radio-tracers. A mismatch means there is a clot in that part of the lung hindering blood flow. Diseases & surgery of the lung complicate interpretation. ...Read more

Not sure that there: Is a direct relationship. Mosaic perfusion is a pattern of vessels in the lung associated with pulmonary hypertension and other pulmonary vascular disease.
Pulmonary hypertension could lead to right heart failure and then ascites. I really am unable to find a direct connection between this finding on high resolution ct and ascites.
Perhaps a radiologist might have a different idea. ...Read more

: 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