نتایج جستجو برای: cerebral astrocytoma

تعداد نتایج: 187104  

Astrocytoma as one of the most common central nervous system (CNS) tumors is rarely reported in veterinary literature. A 7-year-old Persian Lori-Bakhtiari ewe was presented to the clinic with a two months history of progressive blindness, nystagmus to the right, bilaterally decreased pupillary reflexes, head pressing and paddling. At necropsy, a whitish well-circumscribed mass with dimensions o...

Journal: :iranian journal of radiology 0
mahsa raisi-nafchi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran fariborz faeghi department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran; department of radiology technology, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran alireza zali department of neurosurgery, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran hamidreza haghighatkhah department of radiology, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran jalal jalal-shokouhi jam-e-jam medical imaging center, tehran, iran

background diffusion-weighted imaging (dwi) is a form of magnetic resonance imaging (mri) based on measuring the random brownian motion of water molecules within the biological tissues and is particularly useful in tumor characterization. objectives the purpose of this study was to evaluate the diagnostic value of dw mri and the apparent diffusion coefficient (adc) for preoperative grading of a...

2014
Kyung Mi Lee Eui Jong Kim Geon-Ho Jahng Bong Jin Park

We report perfusion weighted imaging (PWI) findings of nonenhanced anaplastic astrocytoma in a 30-year-old woman. Brain magnetic resonance imaging showed a nonenhanced brain tumor with mild peritumoral edema on the right medial frontal lobe and right genu of corpus callosum, suggesting a low-grade glioma. However, PWI showed increased relative cerebral blood volume, relative cerebral blood flow...

Journal: :Journal of the Chinese Medical Association : JCMA 2008
Hao-Ming Li Shu-Shong Hsu Jyh-Seng Wang Mei-Jui Weng Jui-Hsun Fu Clement Kuen-Huang Chen Ping-Hong Lai

Pilocytic astrocytomas are found predominantly in the pediatric population; reports of these tumors are extremely rare in adults. We report 2 cases of adult pilocytic astrocytoma with intracranial hemorrhage. A 32-year-old male presented with neck stiffness and severe headache, and a 34-year-old male was referred for headache and double vision. Computed tomography (CT) and magnetic resonance im...

Journal: :Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 1981

Journal: :Journal of the Japan Veterinary Medical Association 2003

2017
Ghasem Farjanikish Azizollah Khodakaram-Tafti Omid Dezfoulian

Astrocytoma as one of the most common central nervous system (CNS) tumors is rarely reported in veterinary literature. A 7-year-old Persian Lori-Bakhtiari ewe was presented to the clinic with a two months history of progressive blindness, nystagmus to the right, bilaterally decreased pupillary reflexes, head pressing and paddling. At necropsy, a whitish well-circumscribed mass with dimensions o...

Journal: :AJNR. American journal of neuroradiology 2000
M Castillo J K Smith L Kwock

BACKGROUND AND PURPOSE In a limited number of patients, the level of myo-inositol (MI), as seen by proton magnetic resonance spectroscopy (HMRS), has been shown to differ for gliomas of different histologic grades. We sought to determine if MI levels correlate with cerebral astrocytoma grade. METHODS Five control subjects, 14 patients with low-grade astrocytoma, 10 patients with anaplastic as...

Journal: :Journal of computer assisted tomography 2008
Mohammad Haris Nuzhat Husain Anup Singh Mazhar Husain Savita Srivastava Chhitiz Srivastava Sanjay Behari Ram Kishore S Rathore Sona Saksena Rakesh Kumar Gupta

OBJECTIVE To look for the impact of leak correction on correlation of perfusion indices with microvessel density (MVD) and vascular endothelial growth factor (VEGF) in astrocytomas. METHODS Dynamic contrast-enhanced magnetic resonance imaging was performed in 64 patients with varying grades of astrocytoma. Perfusion indices (ie, relative cerebral blood volume (rCBV) with and without leak corr...

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