Here are some minor grammar changes I'd recommend in the overview page
A Radiologist's view of Brain Tumors:
Brain tumours are an uncontrolled, unnatural growth__,__ and division of brain tissue. They are thankfully not very common, but they are one of the most lethal cancers. Currently__,__ the time ...
Primary & Metastatic
... metastatically. (not meatastically)
Gliomas
... originate from glial cells (hence they are called Gliomas)
High Grade
... plans to improve the quality of and £the length of a patient's life. Automatic segmentation methods which are fast
The use of Magnetic Resonance Imaging (MRI) scans
...There is a need for accurate and fully automated methods__.__ Manual segmentation around tumour margins... 3-5 mins [5]£__. Automated__ segmentation ...
Slices
...slices of the brain and reconstruct a 3-dimensional ... intensity values and are typically represented by a grey value between 0 and 255.
Pulse Sequences
...BraTS dataset incoporates the use of T1, post-contrast T1-weighted (T1Gd), T2-weighted (T2), and T2 Fluid Attenuated Inversion Recovery (FLAIR) which are unique radio frequency pulse sequences. These exploit the distinct chemical and physiological characteristics of various tissue types to increase contrast. These are necessary to determine volume and growth-rate of tumors and hence determine their grade.