نتایج جستجو برای: cranial computed tomography

تعداد نتایج: 288177  

Journal: :acta medica iranica 0
mohammad taghi khorsandi ashtiani department of otorhinolaryngology-head & neck surgery, amir alam educational hospital, tehran university of medical sciences, tehran, iran. nasrin yazdani department of otorhinolaryngology-head & neck surgery, amir alam educational hospital, tehran university of medical sciences, tehran, iran. masoome saeedi department of otorhinolaryngology-head & neck surgery, amir alam educational hospital, tehran university of medical sciences, tehran, iran. amin amali department of otorhinolaryngology-head & neck surgery, imam khomeini educational complex ,valiasr hospital, tehran university of medical sciences, tehran, iran.

fewer than 15% of lipomas occur in the head and neck. lipomas of the larynx are very rare benign laryngeal tumors (0.6%). to date less than 100 case of laryngeal lipoma have been reported in the literature.clinical manifestation include progressive horseness, dyspnea, and even dysphagia. in the direct exam smooth or pedunculated mass is seen in the larynx and sometimes if tumor is large enough ...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1987
D J Gower A L Baker W O Bell M R Ball

Papilloedema is not always an adequate predictor of potential complications from lumbar puncture, and many clinicians are using computed tomography (CT) before lumbar puncture in an effort to identify more accurately the "at risk" patient. This paper identifies the following anatomical criteria defined by CT scanning that correlate with unequal pressures between intracranial compartments and pr...

Journal: :Archives of internal medicine 1999
A K Gopal J D Whitehouse D L Simel G R Corey

OBJECTIVE To prospectively identify which patients can safely undergo lumbar puncture (LP) without screening cranial computed tomography (CT). METHODS Emergency department physicians examined patients before CT. Examiners recorded the presence or absence of 10 clinical findings and answered 8 additional questions. The criterion standard was noncontrast cranial CT interpreted by staff radiolog...

Journal: :AJR. American journal of roentgenology 1986
R A Cohen R A Kaufman P A Myers R B Towbin

Cranial computed tomographic (CT) findings are described in 37 children with head injuries resulting from physical abuse. CT findings included subarachnoid hemorrhage (27 patients), cerebral edema (24), cerebral hemorrhage (11), and subdural hematoma (nine). Intravenous contrast material was administered in 10 children in whom there were neurologic symptoms or signs but no history or physical s...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1982
L A Loizou E B Rolfe H Hewazy

A group of 202 patients with suspected, probable or definite multiple sclerosis was studied, using cranial computed tomography (CT). Atrophy alone, or in combination with white-matter and periventricular lucencies, and areas of contrast enhancement, were the main abnormal findings in 52% of patients. Atrophy was detected in 44% of patients, and its frequency and severity correlated with disease...

Journal: :Medical principles and practice : international journal of the Kuwait University, Health Science Centre 2003
Fayaz A Chishti Osama M Al Saeed Hana Al-Khawari Mehraj Shaikh

OBJECTIVE To evaluate the usefulness of intravenous contrast administration in cranial computed tomography (CT) in a general hospital with a magnetic resonance imaging (MRI) facility, and to establish a protocol to determine which patients would benefit most from using contrast-enhanced cranial CT. SUBJECTS AND METHODS Five hundred and forty-seven patients who underwent routine nonenhanced CT...

Journal: :iranian journal of radiation research 0
a. saravanakumar department of applied science, psg college of technology, coimbatore 641 004, india k. vaideki 1department of applied science, psg college of technology, coimbatore 641 004, india k.n. govindarajan department of radiology, psg institute of medical science and research & hospitals, coimbatore 641004, india b. devanand department of radiology, psg institute of medical science and research & hospitals, coimbatore 641004, india s. jayakumar department of physics, psg institute of technology and applied research, coimbatore 641 062, india s.d. sharma radiological physics and advisory division, bhabha atomic research centre, mumbai- 400094, india

background: to suggest south india ct diagnostic reference levels (drls) by collecting radiation doses for the most commonly performed ct examinations. materials and methods: a pilot study investigated the most frequent ct examinations. 110 ct sites were asked to complete a survey booklet to allow the recording of ct parameters for each of 3 ct examinations during a 1 year time period. dose dat...

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