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Doctor insights on: Cta Of Brain

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Mri of the brain without contrast?

Mri of the brain without contrast?

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 more

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Cta (Definition)

Computed tomography angiography. Specialized contrast enhanced CT technique that visualizes the blood vessels. Can simulate a traditional angiogram without ...Read more


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Can a CT scan of the head without contrast dye detect brain aneurysms?

Can a CT scan of the head without contrast dye detect brain aneurysms?

Yes: While plain ct scan is not the best test for aneurysm, large aneurysms can potentially be spotted. Mri is a better test, especially when blood vessels are looked at as well. ...Read more

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Is this reliability of MRI brain and mr angiography better?

Is this reliability of MRI brain and mr angiography better?

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 more

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Does a MRI OF the brain show brainstem?

Does a MRI OF the brain show brainstem?

Usually: The standard MRI of brain takes images from the frontal lobes to the bottom of the brainstem, the medulla. ...Read more

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Can Ct Scan damage brain , effect activity of brain?

Can Ct Scan damage brain , effect activity of brain?

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 more

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What are the risks of a brain CT scan?

What are the risks of a brain CT scan?

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 more

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In migrain whts the application of MRI venogram with brain?

In migrain whts the application of MRI venogram with brain?

Migraine Workup: In atypical migraine headaches, MRI venogram is sometimes performed to rule out clots in the sagittal sinuses which could be causing the problem. ...Read more

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Do CT scans spot all kinds of brain tumors and brain cancer?

Do CT scans spot all kinds of brain tumors and brain cancer?

Good question: Ct scan with contrast are quite sensitive to lesions about ).5-1cm in diameter. Mri brain +/- contrast is even more sensitive. ...Read more

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Describe the features of a brain aneurysm.?

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 more

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Mr of the brain showed foci of abnormal highh signal in deep white matter?

Mr of the brain showed foci of abnormal highh signal in deep white matter?

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

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What is a brain cta scan?

What is a brain cta scan?

CTA: CTA stands for computed tomography angiogram. It is a type of CT scan that allows to get a detailed images of the brain arteries. It requires an IV administration of a contrast agent. Scan takes only a few moments and except for the IV, painless. ...Read more

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What are the risks of angiogram of brain?

What are the risks of angiogram of brain?

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

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Can 2 CT scans of the head cause brain cancer?

Can 2 CT scans of the head cause brain cancer?

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 more

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Echocardiogram results indicate an avm. Ct scan of chest and MRI & mra of brain are still negative. Where else might the avm be?

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

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What are the dangers of myocardial perfusion scans?

What are the dangers of myocardial perfusion scans?

Perfusion scan: read this: http://www.hopkinsmedicine.org/healthlibrary/test_procedures/cardiovascular/myocardial_perfusion_scan_stress_92,P07979/

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