Doctor insights on:
Cta Of Brain
Maybe safer in some: Gadolinium contrast could potentially cause kidney complications on rare occasion. Mri without contrast will reveal areas of atrophy, stroke, bleeding, tumors, hydrocephalus, etc, but will not clearly show certain ms lesions, aneurysms, avm's, some inflammatory problems, so, always discuss with your doctor as to why an ordered MRI might be done in a variety of ways. ...Read moreSee 2 more doctor answers
Depends: I believe you are asking which is better, MRI of the brain or mr angiography. An MRI of the brain details the structure and morphology of the brain as well as whether there is evidence of infarct (stroke), demyelination (ms) or a mass. Mr angiography details the arterial vessels to evaluate for aneurysm or vascular disease. They are often performed together. ...Read moreSee 1 more doctor answer
No: The x ray radiation in a CT has no measurable or known effect on neural tissues. 1) dose is way too low and 2) nerves are relatively radioresistant since the cells don't reproduce very fast, if at all. There is a theoretical risk of cataracts and cancer years later, but this is incredibly small esp. for a single scan and controversial anyway. ...Read moreSee 1 more doctor answer
Very safe in general: A plain ct scan really only caries the risk of a fairly modest radiation exposure, so we typically only start to worry about this for people who get many cts in a single year. If it is being done with intravenous contrast, then there is a risk of allergic reaction to the iodine, as well as some risk of kidney damage in those with underlying kidney risk factors (eg elderly, diabetes). ...Read moreSee 1 more doctor answer
Size & location: It depends on the location, the size, the rate of growth & whether it has leaked or ruptured. Throbbing headaches which stay in one location are common but must be distinguished from migraine. New onset seizure, partial loss of vision or symptoms of stroke are other typical presentations but none are specific. Ct or MRI can rule in/out an aneurysm reliably. ...Read moreSee 1 more doctor answer
High signal MRI: This finding in MRI of brain is non-specific. Most of them are due to microvascular disease associated with high blood pressure and diabetes. Some due to old damage. Also can be seen in diseases such as multiple sclerosi. Your doctor will decide if he or she should go further base on your sign and symptoms. ...Read more
Brain MRI says satisfactory intraluminal signal is noted in distal carotid vertebral and basilar arteries. Unremarkable brain MRA. What does this mean?
Normal vessels.: means normal vessels.Get a more detailed answer ›
Depends: There are several ways angiography can be done however all carry risk associated with contrast use, e.g. Allergic reaction or kidney injury (depending on type of contrast). Ct exposes to radiation, as does conventional angio, whereas mr does not. Conventional angio also carries risks which include but not limited to vascular complications, bleeding, and stroke. ...Read more
Unknown: CT of the brain does deliver radiation but the likelihood of developing malignancy from one or two studies is unknown. One must weigh the benefit to be gained from the study against whatever risk may be present. Careful selection of patients, particularly children is important when considering imaging. Thanks for trusting HealthTap! ...Read moreSee 1 more doctor answer
Echocardiogram results indicate an avm. Ct scan of chest and MRI & mra of brain are still negative. Where else might the avm be?
Anywhere: Arteriovenous malformation or avm is an abnormal connection between arteries and veins, bypassing the capillary system. The congenital vascular anomaly occurs commonly in the central nervous system, but can appear in any location. Although many avms are asymptomatic, they can cause intense pain or bleeding or lead to other serious medical problems. ...Read more
Perfusion scan: read this: http://www.hopkinsmedicine.org/healthlibrary/test_procedures/cardiovascular/myocardial_perfusion_scan_stress_92,P07979/Get a more detailed answer ›