Distinctive Characteristic Features of Intramedullary Hemangiopericytomas

Distinctive Characteristic Features of Intramedullary Hemangiopericytomas

STUDY DESIGN The retrospective analysis of intramedullary hemangiopericytomas (HPCs) was performed, and the entity was discussed in accordance with the literature findings. PURPOSE This study aimed at defining distinctive characteristic features of intramedullary HPC with respect to surgical approach and prognosis. OVERVIEW OF LITERATURE Intramedullary HPCs are extremely rare tumors. They o...

Intracranial hemangiopericytomas: MR and CT features.

PURPOSE To describe the MR and CT imaging features of hemangiopericytoma and to identify the characteristics that might distinguish them from meningioma. METHODS We retrospectively reviewed the CT and MR findings in 34 pathologically proved cases of hemangiopericytoma. We evaluated the size, shape, and location of the tumor; the presence of hydrocephalus, edema, and mass effect; the type of d...

Distinctive and compact features

We consider the problem of extracting features for multi-class recognition problems. The features are required to make fine distinctions between similar classes, combined with tolerance for distortions and missing information. We define and compare two general approaches, both based on maximizing the delivered information for recognition: one divides the problem into multiple binary classificat...

The nature of distinctive features

Distinctive Features Should Be Learned