T2- weighted image

This sequence can give proton density, T1 or T2 weighted images.

Pre-contrast T2 weighted images may show an iso-signal or slightly hyper-signal.

For example, the intensity function that relates a T1 and a T2 weighted image is distinctly non-linear.

High intensity signal can be found in spinal cord on T2 weighted images, representing necrosis/cavity formation.

Imaging by MRI demonstrates an area of high signal return on T2 weighted images.

MRI is the exam of choice and shows increased signal on T2 weighted images within areas of muscle oedema.

Solid parts of the tumor often enhance with contrast MRI finding on T1 and T2 weighted images are variable.

Entirely cartilaginous bodies will appear isointense to muscle on T1 and hyperintense to muscle on T2 weighted images.

During 2 hours of cerebral hypoxia-ischemia areas of increased intensity appeared on diffusion weighted and T2 weighted images and these reversed following reperfusion.

MRI shows a variable finding depending on T1 or T2 weighted images, dependent on the amount of bone to fibrous connective tissue ratio.

On T1 weighted images tumours have a low signal intensity, appearing dark; on T2 weighted images they have a higher signal and look bright.

HCC appears as a high intensity pattern on T2 weighted images and a low intensity pattern on T1 weighted images.

For example, soft tissue sarcomas and lymphomatous masses show a reduction in signal on T2 weighted images in response to treatment, and bone tumours may show a mixed response with persistent areas of low signal remaining and areas of high signal developing within the bone marrow.