Estudo por imagens convencionais e espectroscopia de prótons por ressonância magnética dos tumores da fossa posterior na faixa etária pediátrica.

Abstract

Estudo por imagens convencionais e espectroscopia de prótons por ressonância magnética dos tumores da fossa posterior na faixa etária pediátrica.

Meduloblastoma: correlação entre ressonância magnética convencional, difusão e espectroscopia de prótons

“…Therefore, decreased Naa peak, increase in Co and Mi peaks, and detection of the Lac peak are typical findings at proton spectroscopy for primary neoplasms (5,24) . According to Costa (7) , proton spectroscopy has allowed the differentiation among the three main types of tumor affecting the posterior fossa in the pediatric age range. This author has concluded that medulloblastoma demonstrated the higher Co/Cr and Co/Naa ratios as compared with pilocytic astrocytoma and ependymoma.…”

“…The casuistic included 37 (22 male and 15 female) healthy individuals with ages ranging between three and 18 years submitted to spectroscopic study with voxel on the cerebellar hemisphere. These individuals had no neurological complaints or symptoms, their skull MRI studies were normal and their inclusion in the present study was authorized by their legal representatives (Table 1) (7) .…”