نتایج جستجو برای: computer tomography scan

تعداد نتایج: 795803  

2016
Himanshu Mishra Ritusha Mishra

Endoscopic biopsy from suspicious lesion and Fine needle aspiration cytology from secondary nodal sites are done for histopathological confirmation. Chest X-ray is required to exclude lung metastasis. Contrast-enhanced computed tomography (CECT) scan or Magnetic resonance imaging (MRI) could be used to assess the loco-regional extent of the disease, however MRI is more sensitive but less specif...

2012
C. A. C. Leckey M. D. Rogge F. R. Parker

Microcracking in composite laminates is a known precursor to the growth of inter-ply delaminations and larger scale damage. Microcracking can lead to the attenuation of ultrasonic waves due to the crack-induced scattering. 3D elastodynamic finite integration technique (EFIT) has been implemented to explore the scattering of ultrasonic waves due to microcracks in anisotropic composite laminates....

2015
Timothy K. Stanton Gregory B. Crawford

Benthic shells are in the broad acoustic category of complex finite-sized shapes for which there is no exact mathematical solution to describe the acoustic scattering. Subsequently, the research program is a combination of theoretical analysis, numerical simulations, laboratory experimentation at WHOI, and comparison between models developed in this program and scattering data collected at sea....

jalal ordoni Vida sargazi zeynab yazdi sotode

Introduction: Computed tomography is one of the most powerful tools for investigating thorax disease, because it shows progression of lung disease much clearer than chest radiography. Technical advances in CT scanners have led to some abilities for CT scanners such as coverage of larger volume, lower noise and ability for acquiring image in one respiratory phase. However, this will be accompani...

2009
R. B. Pandey Allen H. Reed Edward Braithwaite Ray Seyfarth J. F. Gettrust

A laboratory sediment sample is digitized by X-ray computed tomography system to obtain a host matrix of size 100 of porosity 0.282. Flow through the porous medium is studied by an interacting lattice gas model for fluid driven by pressure bias. The bias //(0<//^ 1) is implemented via soft and hard pressure constraints in selecting the stochastic movement of fluid particles. The response of flu...

Journal: :Brazilian journal of otorhinolaryngology 2005
Aracely Fernandes Duarte Rita de Cássia Soler Francis Zavarezzi

UNLABELLED The chronic nasal obstruction is a common complaint in Otolaryngology outpatients. The diagnosis of nasal obstruction is based on the clinical history, physical examination and diagnostic procedures. Among these, it is already established in the current literature the importance of nasal endoscopy and computer tomography scan. AIM The objective of this research study was based on a...

Alireza Naseri Amir Ghasemi Jangjoo Farshad Seyednezhad Gholamreza Seyedoskooei Mohammad Mohammadzadeh Shahram Dabiri Oskooei

Introduction: 99mTc-MIBI has been proposed for use as an imaging agent for various tumors, including breast cancer, lung cancer, lymphomas, melanomas and brain neoplastic lesions. Brain tumors are very common and radiotherapy being major part of treatment following surgery. After radiotherapy, deteriorating clinical status can be due to either radiation necrosis or recurrent tumor. Comput...

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2021

The coronavirus disease 2019 (COVID-19) pandemic has made test screening much needed. Currently, the most commonly used is swab type. Although in fact, there also a method with chest radiology. purpose of this study to develop COVID-19 early detection system based on X-ray images patient's thorax form computer-aided diagnosis. This case fact that modalities are available several health care cen...

Journal: :the journal of tehran university heart center 0
mohammad bagher rahim shariati general hospital, tehran university of medical sciences, tehran, iran. mohammadhossein mandegar shariati general hospital, tehran university of medical sciences, tehran, iran. farideh roshanali shariati general hospital, tehran university of medical sciences, tehran, iran.

a 50-year-old male underwent a check-up for an insurance company. chest x-ray revealed a large ball-like lesion in the posterior mediastinum. the finding was confirmed by computed tomography (ct) scan (figure 1). the patient was referred to our center, where he had a successful mass removal surgery (figure 2). pathology identified the mass as neurinoma.

حکمت آرا, محمدحسین,

Vestibular schwannoma is the most common tumor of the posterior fossa of the skull. Patients referred with the primary otologic symptoms such as hearing loss, tinnitus, vertigo, imbalance, and the cranial nerve palsy. Thirty-three patients were operated and treated by a team of otolaryngologist and neurosurgeon, anudiometrist, and internist. Patients'chiefcomplaint was due to 94% hearing loss a...

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