نتایج جستجو برای: ray computed

تعداد نتایج: 431187  

Journal: :Optics Letters 2002

Journal: :emergency journal 0
ali shahrami emergency department, imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran. majid shojaee emergency department, imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran. seyed mohammadreza tabatabaee emergency department, imam hossein hospital, shahid beheshti university of medical sciences, tehran, iran. elaheh mianehsaz clinical research support center, kashan university of medical sciences, kashan, iran.

introduction: necessity of imaging for symptom-free conscious patients presented to emergency department (ed) following traumatic thoracolumbar spine injuries has been a matter of debate. the present study was aimed to evaluate the diagnostic value of clinical findings in prediction of traumatic thoracolumbar injuries compared tocomputed tomography (ct) scan. methods: the present diagnostic val...

Journal: :Physics in medicine and biology 2006
Willi A Kalender

X-ray computed tomography (CT), introduced into clinical practice in 1972, was the first of the modern slice-imaging modalities. To reconstruct images mathematically from measured data and to display and to archive them in digital form was a novelty then and is commonplace today. CT has shown a steady upward trend with respect to technology, performance and clinical use independent of predictio...

Journal: :Optics letters 2002
Bradley Ferguson Shaohong Wang Doug Gray Derek Abbot X-C Zhang

We demonstrate a tomographic imaging modality that uses pulsed terahertz (THz) radiation to probe the optical properties of three-dimensional (3D) structures in the far-infrared. This THz-wave computed tomography (T-ray CT) system provides sectional images of objects in a manner analogous to conventional CT techniques such as x-ray CT. The transmitted amplitude and phase of broadband pulses of ...

ژورنال: :iranian journal of radiology 0
mehrzad bahtouee department of internal medicine (division of pulmonary), bushehr medical center hospital, bushehr university of medical sciences, bushehr, iran jamshid saberifard department of radiology, bushehr medical center hospital, bushehr university of medical sciences, bushehr, iran hamid javadi research center of gastroenterology and hepatology (grcgh), golestan university of medical sciences, gorgan, iran iraj nabipour the persian gulf tropical medicine research center, bushehr university of medical sciences, bushehr, iran hasan malakizadeh department of internal medicine (division of pulmonary), bushehr medical center hospital, bushehr university of medical sciences, bushehr, iran gholamhossein monavvarsadegh department of internal medicine (division of pulmonary), bushehr medical center hospital, bushehr university of medical sciences, bushehr, iran

conclusion the present results confirmed that 99mtc-igg scan could be applied to detect the severity of pulmonary involvement, which was well correlated with hrct findings. this data also showed that the 99mtc-igg scan might be used as a complement to hrct in the functional evaluation of the clinical status in ild; however, further studies are recommended. patients and methods eight known cases...

Journal: :iranian journal of radiology 0
mohammad parsa hosseini department of electrical and computer engineering, science and research branch, islamic azad university, iran +98-9122981895, [email protected]; department of electrical and computer engineering, science and research branch, islamic azad university, iran +98-9122981895, [email protected] hamid soltanian-zadeh image analysis laboratory, department of radiology, henry ford health system, detroit, mi, usa; control and intelligent processing center of excellence, school of electrical and computer engineering, university of tehran, iran shahram akhlaghpoor department of radiology, sina hospital, tehran university of medical sciences (tums), iran

background chronic obstructive pulmonary disease (copd) is a devastating disease.while there is no cure for copd and the lung damage associated with this disease cannot be reversed, it is still very important to diagnose it as early as possible. objectives in this paper, we propose a novel method based on the measurement of air trapping in the lungs from ct images to detect copd and to evaluate...

Journal: :emergency journal 0
anita sabzghabaei majid shojaee hamid kariman mohammad manouchehrifar kamran heydari sirus sohrabi

introduction: using pan or selective computed tomography (ct) scan in management of multiple trauma patient is a matter of debate. therefore, the present study was designed aiming to compare the findings of pan and selective ct scans in management of multiple trauma patients. method: this is a prospective cross-sectional study, on patients presented to the emergency department (ed) of shohadaye...

Journal: :Current Biology 2017

2013
Ting Yue Yu Brenda Finney Craig Hughes Hamid Dehghani Ela Claridge Steve Thomas

Micro-computed tomography (μCT) has been successfully used to study the cardiovascular system of mouse embryos in situ. With the use of barium as a suitablecontrast agent, blood vessels have beenimaged and analysed quantitatively such asblood volume and vessel sizes on embryosof ages 14.5 to 16.5 days old. The advantageof using this imaging modality is that it hasprovide...

Journal: :emergency journal 0
iraj golikhatir hamed aminiahidashti hasan motamed motlagh seyed farshad heidari

isolated third nerve palsy develops in numerous intracranial pathologies such as closed head trauma, tumor, and aneurysm. this report describes a 61 years old female with an abrasion on the left forehead and ptosis of the left eye. initial computed tomography did not reveal any causative cerebral and vascular lesions or orbital and cranial fractures. high-resolution and multi-axial enhanced mag...

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