SCI论文审稿英文词汇备份

ADC could be useful to differentiate the lymphoma and high-grade glioma, but in the clinical situation it is sometimes difficult to distinguish the two by ADC alone because of the overlap between them.

irregular ring-like enhancement of the tumor.

hyperintensity.  

DW imaging shows hyperintensity in the ring enhancing solid portion and hypointensity in the central necrosis

Typically, the lesion is iso- or slightly hypointense on T1- and hyperintense on T2-weighted images with homogeneous enhancement.

with surrounding edema

DW images show mild hyperintensity and increased ADC (arrow).

peripheral and peritumoral hyperintensity associated with decreased ADC (arrowheads)

the hypointensity in the center of the lesion (0.65×10-3 mm2/s; arrow).

a well-circumscribed non-enhancing mass with a unique striated pattern(streak-like)

Solid components of GBM are typically hyperintense on DW images with slightly decreased or slightly

increased ADC.

Cystic necrotic components of GBM are usually hypointense on DW images with increased ADC.

which cystic components are usually hyperintense on DW images with decreased ADC.

Gadolinium enhanced T1-weighted image with fat saturation

arrowheads arrow

the cytotoxic edema in peritumoral areas and rarely in the white matter tumor infiltration

The narrow rim of increased FA and decreased ADC observed at the edge of GBM is caused by compressed

white matter fibers or peripheral cellular infiltration and associated cytotoxic edema

Tumor cells invade and change white matter fiber structures by widening, displacing, and disrupting the fiber bundles

a well-circumscribed non-enhancing mass with a unique striated pattern

Gadolinium-enhanced T1 weighted image with fat saturation shows a solid mass with enhancement in the cerebellar vermis.

Primary lymphomas of the central nervous system are rare malignant tumors, accounting for less than 1% of all brain tumors. However, the incidence has been increasing subsequent to the spread of the acquired immunodeficiency syndrome.A majority of lymphomas are iso- or hypointense on T2-weighted images [19]. Most lymphomas show homogeneous enhancement in immunocompetent patients, but in immunosuppressed patients a rim enhancement is a more common fi nding [19, 74–76]. Th e enhancing components of lymphomas are generally hyperintense on DW images (Figs. 13.38, 13.39). 77]. The ADC of lymphomas is oft en lower than that in high-grade gliomas.As mentioned above, this corresponds to the hypercellularity and might help in differentiating between lymphomas and high-grade gliomas [17].