نتایج جستجو برای: cns anomaly
تعداد نتایج: 143765 فیلتر نتایج به سال:
Congenital anomalies of the optic disc underlie many cases of decreased vision, strabismus, and nystagmus in childhood. A comprehensive evaluation necessitates an understanding of the ophthalmoscopic features, associated neuro-ophthalmologic findings, pathogenesis, and appropriate ancillary studies for each anomaly. The subclassification of different forms of “colobomatous” defects on the basis...
BACKGROUND & OBJECTIVES Prenatal diagnosis of malformations is an important method of prevention and control of congenital anomalies with poor prognosis. Central nervous system (CNS) malformations amongst these are the most common. The information about the prevalence and spectrum of prenatally detected malformations is crucial for genetic counselling and policymaking for population-based preve...
Increasing use of neuroimaging in children has led to more incidental findings of CNS mass lesions, the management of which is uncertain. The authors' aims in this study are to describe these mass lesions and their evolution, as well as to discuss the management options and determine the prevalence of incidental CNS mass lesions at their pediatric clinic. A retrospective study was undertaken in...
BACKGROUND/OBJECTIVE Central nervous system (CNS) anomalies are the most serious congenital abnormalities. Ultrasound examination is an effective and noninvasive modality for prenatal diagnosis of these anomalies. The purpose of the current study was to determine the frequency of CNS and associated abnormalities. PATIENTS AND METHODS A total of 22500 pregnant women who were referred by obstet...
neurocysticercosis, is the infection caused by the larval form of the tapeworm taenia solium. it is considered as the most common parasitic disease of the central nervous system and the most common cause of acquired epilepsy. this has primarily been a disease that remains endemic in countries with poor economy , but because of increased migration neurocysticercosis is being diagnosed more frequ...
abstract objective tumors of the central nervous system constitute the largest group of solid neoplasms in children and are second only to leukemia in their overall frequency during childhood. the main purpose of the present study is to determine the incidence, age, sex, location and histological diagnosis of cns tumors in children, less than 15 years of age, in the mofid children's hospital, i...
Dr. Rômulo L. Gama – Rede Sarah de Hospitais de Reabilitação Avenida Presidente Juscelino Kubitscheck 4500 60861-630 Fortaleza CE Brasil. E-mail: [email protected] Developmental venous anomaly (DVA), also known as venous angioma, is becoming the most commonly encountered intracranial vascular malformation in central nervous system (CNS) imaging. It is thought that DVA develops during developm...
در این پژوهش، طراحی مفهومی نوترونیک چشمه نوترون سرد (cns) برای راکتور تحقیقاتی تهران (trr)با استفاده از کد mcnpx انجام شده است. چشمه نوترون سرد، نوترون هایی با انرژی بسیار پایین (سرعت کم) با طول موج بلند را برای پراکندگی نوترون ها، تولید می کند زیرا چشمه نوترون سرد، نوترون ها را تا دمای حدود 20 کلوین سرد می کند که حدود 15 برابر انرژی آن ها کم تر از نوترون های حرارتی است. این کاهش دما سبب تولید ...
Abstract Background Central nervous system (CNS) anomalies are the most commonly diagnosed abnormalities of all fetal malformations and usually primarily discovered on routine prenatal ultrasonography (US). Fetal magnetic resonance imaging (MRI) is a non-invasive technology with high soft tissue contrast that documented to increase diagnostic accuracy for detection brain anomalies. The aim our ...
crush preparation cytology technique was used during the operative procedure for the diagnosis of 199 cns tumors. this technique is simple, easy to perform, rapid, and inexpensive. the cytomorphologic findings were excellent and helped achieve a rapid and correct diagnosis. this technique was used on the tiny, small specimens which were not suitable for frozen sectioning. the results were compa...
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