What does it mean to have a slightly higher signal in the NMR flair

Flair is like a scanning sequence that suppresses water signals, and is divided into T1FLAIR and T2FLAIR, and T2FLAIR is generally of greater significance. The water in human tissues is divided into free water and bound water, free water generally refers to free water or flowing water, or water that is not combined with macromolecular substances, or water that is not mixed with macromolecular substances; Bound water often refers to water that cannot flow freely and is bound to macromolecular substances in tissues, whether it is free water or bound water, it has a long T1 and long T2 signal on MRI, that is to say, T1 has a low signal (black); T2 is hyperintense (white); T2FLAIR can inhibit the signal of free water is low, so if T2FLAIR is high signal, it means that there is more bound water in the tissue, or more water bound to macromolecular substances such as proteins, which can be seen in a variety of conditions, inflammation, tumor, infarction, demyelination.

Yes, but cerebral infarction is the most common.

The FLAIR sequence is a routine imaging sequence in MRI, and normal lesions can also be hyperintense on the FLAIR series. First of all, the hyperintensity of the FLAIR sequence should be combined with the clinical manifestations and other imaging sequence examinations, in addition, it is also necessary to combine a series of comprehensive judgments such as laboratory tests and electroencephalogram examinations, and the hyperintensity of the FLAIR sequence cannot be used only to judge whether there is a lesion and the nature of the lesion, and the imaging examination is only a part of a series of clinical examinations, and the clinician should combine other examinations to determine whether there is a lesion.

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Generally, head MRI has T1 phase and T2 phase.

There are non scans and sagittal positions, depending on your condition.

For example, temporal lobe epilepsy should be crowned in the hippocampus.

Vascular disease can be enhanced with some perfusion imaging of DWI and TWI.

If there are more white matter lesions, FLAIR can be added, which is a pressurized water phase, similar to the T2 phase, except that the cerebrospinal fluid part is black.

These are prescribed by the doctor according to the situation.

You just need to know how to look at the diagnosis, and you don't need to understand the above.

Flair is an imaging sequence of MRI, and the landlord does not need to care about the technical details of the Flair hyperintensity indicates a lesion

Hello: Hyperintensity mainly refers to an examination of MRI, indicating that there is local ischemia in the brain, indicating that there may be multiple lacunar cerebral infarction, if the patient has general discomfort, it is best to go to a regular hospital in time to do relevant examinations to confirm the diagnosis**, targeted**, I hope to help you, I wish you a happy life and good health, thank you!

Ask the doctor: I walk diagonally to the right side, is this the most likely to have a stroke?

Answer: Hello, if you have suffered from cerebral hemorrhage or cerebral infarction before, this situation will occur, it is recommended that you go to a regular hospital for further examination and diagnosis**, I hope to help you, thank you.

Hello, you have had a high t2flair test, which means that you have suffered from multiple lacunar cerebral infarction and need further examination, I hope it can help you, thank you.

Question: I found out in 19 years that it was multiple choking infarctions.

If the doctor is serious, it will not cause a stroke.

Question: Thank you, doctor.

Hello: The Third Hospital of the Affiliated Hospital of Guizhou Medical University, I hope to be able to help you, I wish you a happy life, good health, all the best, if you can help you, please like, thank you.

I was still a medical student, and probably T1 was low and T2 was high, indicating that there was inflammation and lesions. 3997

Signal, the term of MRI imaging, refers to the signal shadow visible in the image, T1 is the longitudinal relaxation, T2 is the transverse relaxation T1, T2 is a parameter used to judge whether the lesion is diseased, because the T1 and T2 values of the diseased tissue are different from the values of normal tissue. If you want to know more about it, it is recommended to search for "nuclear magnetic resonance" in the encyclopedia, I hope mine is helpful to you :)

It is more accurate to go to the MRI room of the hospital for advice.

This means an increase in the water content in the tissues. For example, inflammation, tumor, infarction. Cerebral infarction is common.

Questions. Does it indicate acute or pre-existing?

The left occipital forceps and the right frontal subcortical white matter area showed patchy T1 long T2 signal shadows, T2flair showed high intensity, and DWI showed equal signals, and the diagnosis was subcortical white matter deficiency.

It has been around for a long time. Questions.

Subcortical white matter ischemic foci, degenerative foci, do you need **?

Go for a clinical check-up. Wait for the specific doctor, I don't dare to talk nonsense if I haven't checked here.

This is not a trivial issue.

Questions. It turned out that I didn't feel anything, and I often had a vague headache and foggy recently. What department do you want to check?

Isn't this MRI just a check? What other checks are needed?

Just go to the brain department of the hospital.

Questions. Got it, thanks! Well.

Consult a radiologist.

T1 and T2 times are properties of tissues that cannot be changed, just like the type of tissue (e.g. muscle tissue, epithelial tissue, etc.). T1 and T2-weighted MRI imaging is performed based on these characteristics of the tissue. Specifically, this characteristic is defined as:

T1 is the longitudinal recovery of the spins to 63% of the time (at flip angle = 90) after the pulse is applied. (Why do you need to recover?) When flip angle=90, all longitudinal bulk mags are converted to transverse....

The T1 and T2 times of fluids are generally longer, which is why the CSF part of the brain image (T2 weighted) is brightly colored.

T1 and T2 of tissues can also be changed by adding contrast agents (e.g., gadolinium-based), which is how enhanced MRI works.

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Hyperintensity of T2FLAIR means that there is more water bound to tissues, or more water bound to macromolecular substances such as proteins, which can be seen in a variety of conditions, such as inflammation, tumor, infarction, and demyelination, but the most common is cerebral infarction.