mri definition help
 

Hi I had my thoracic spine Mri on the 3 t machine. The t3 lesion was not measurable��. Enlarged t-8 with vasogenic edema, intermedullary spinal met. Showed patchy T2 prolongation from T3to T10-11. Good thing is no new tumors. I do not know what "prolongation " means.
Currently on weekly 100mg IT Herceptin, 105 mg IV weekly. Tykerb 750mg daily.
Thanks for input
Darita