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Fluid-attenuated inversion recovery (FLAIR) is a magnetic resonance imaging sequence with an inversion recovery set to null fluids. For example, it can be used in brain imaging to suppress cerebrospinal fluid (CSF) effects on the image, so as to bring out the periventricular hyperintense lesions, such as multiple sclerosis (MS) plaques. [ 1 ]
Inversion recovery is a magnetic resonance imaging sequence that provides high contrast between tissue and lesion. It can be used to provide high T1 weighted image, high T2 weighted image, and to suppress the signals from fat , blood , or cerebrospinal fluid (CSF).
Gliomatosis cerebri is a rare growth pattern of some brain tumors, impacting at least three cerebral lobes, mostly with bilateral involvement of the cerebral hemispheres. It can be seen in some types of diffuse glioma, most notably glioblastoma. It consists of infiltrative threads that spread deeply into the brain, making them very difficult to ...
It is called tumefactive as the lesions are "tumor-like" and they mimic tumors clinically, radiologically and sometimes pathologically. [1] These atypical lesion characteristics include a large intracranial lesion of size greater than 2.0 cm with a mass effect, edema and an open ring enhancement. A mass effect is the effect of a mass on its ...
Radiotherapy is an important treatment for central nervous system tumors and has been demonstrated to extend survival and improve the quality of life for patients with many of the primary and metastatic brain tumors. [7] Chemotherapy Chemotherapy, or the use of drugs in the treatment of cancer, can lead to the long-term control of many ...
[2] [3] Glioblastomas represent 15% of all brain tumors. [1] They are thought to arise from astrocytes. [9] The diagnosis typically is made by a combination of a CT scan, MRI scan, and tissue biopsy. [1] There is no known method of preventing the cancer. [3] Treatment usually involves surgery, after which chemotherapy and radiation therapy are ...
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Another promising MRI technique is magnetic transfer imaging, which will allow the detection of damage in normal-appearing brain tissue away from focal lesions. Finally, high resolution spectral domain optical coherence tomography could prove to be a very promising and sensitive way of identifying optic neuritis in the future.