نتایج جستجو برای: axial ct scan

تعداد نتایج: 224430  

2016
James D. Wylie Michael J. Beebe Garrett Bodine Ashley Lynn Kapron Travis Maak Omer Mei-Dan Stephen Kenji Aoki

BACKGROUND Abnormal torsion of the femur is correlated to lower extremity pathologies. Although computed tomography (CT) scan is the gold standard torsional measurement, magnetic resonance imaging (MRI) is proposed as a viable alternative. Our aim was to determine the accuracy and consistency of MRI and CT femur rotational studies based on 4 described protocols. METHODS Twelve cadaveric femor...

Journal: :AJNR. American journal of neuroradiology 2011
T M Shepherd C P Hess C T Chin R Gould W P Dillon

BACKGROUND AND PURPOSE CT guidance may improve precision for diagnostic and therapeutic spinal injections, but it can increase patient radiation dose. This study examined the impact of reducing tube current on patient radiation exposure and the technical success for these procedures, by using axial acquisitions for short scan lengths and eliminating nonessential imaging. MATERIALS AND METHODS...

Journal: :iranian journal of medical physics 0
seied rabi mahdavi medical physics department, faculty of medicine, tehran university of medical sciences, tehran, iran.

introduction bolus is a soft and resilient material which is used for increasing skin dose or to even out the irregular patient contour. the main property of various materials used presently as bolus is the water-equivalent electron density. ethyl methacrylate is used as a soft-liner in dentistry and its physical and chemical properties are proved to be nontoxic for human body. the goal of this...

Journal: :acta medica iranica 0
ebrahim razmpa department of otolaryngology, tehran university of medical sciences, tehran, iran. babak saedi department of otolaryngology, tehran university of medical sciences, tehran, iran. amin dostee department of otolaryngology, tehran university of medical sciences, tehran, iran. mohsen ordobadee department of otolaryngology, tehran university of medical sciences, tehran, iran.

chronic rhinosinusitis (crs) is a common disease which is usually diagnosed clinically, considering the combination of natural history, physical examination and imaging studies. this study aimed to evaluate the clinical value of routine postoperative histopathologic examination (pohe) in patients with a clinical diagnosis of chronic rhinosinusitis with polyposis (crswp), or without polyposis (c...

Journal: :basic and clinical neuroscience 0
abdolhadi daneshi mousa taghipour sadegh izadi reza mollahossaini hossain ghaleh-noyi mehdi ghaffari

in this study, 22 patients (15-75 years old) were selected and transferred to ct scan for tumor ablation. for ablations, after prep and drep under the local anesthesia and mild sedation in proper position, small incision made and special needle inserted and guided by proper direction to the core of the tumor. then, laser probe inserted through the needle and laser energy delivered. although we ...

2014
S. Munshi

Objective: To evaluate the different neurological changes in brain in eclampsia by CT scan in relation to neurologic symptoms. Method: This is prospective observational study in a tertiary hospital. CT scan of brain is performed within 48 hours of eclampsia after confinement of fetus and after stabilising the mother with standard MgSO4 protocol. The CT scans of brain are performed with 5mm and ...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2012
Mahira Yunus

OBJECTIVES To study the use of helical computed tomography 2-D and 3-D images, and virtual endoscopy in the evaluation of airway disease in neonates, infants and children and its value in lesion detection, characterisation and extension. METHODS Conducted at Al-Noor Hospital, Makkah, Saudi Arabia, from January 1 to June 30, 2006, the study comprised of 40 patients with strider, having various...

Journal: :The Ulster Medical Journal 1995
P. K. Ellis M. Reilly K. E. Bell

We describe a patient who presented with headaches and vomiting. A computerised tomogram (CT) of brain failed to demonstrate bilateral subdural collections subsequently shown on magnetic resonance imaging (MRI). This case illustrates that an essentially normal CT scan does not always exclude significant intracranial pathology. CASE REPORT A 44 year old female presented with a four month history...

Journal: :Chest 2012
Xiao Zhu Wenguo Fan Dongpei Li

journal.publications.chestnet.org Figure 1. A, Contrast-enhanced axial enhanced CT scan through the thoracic inlet demonstrates a 2-cm, homogenously low-attenuation nodule in the right lobe of the thyroid accessible to ultrasound fi ne-needle aspiration (arrow). B, High-frequency transverse ultrasound image of the neck demonstrates a predominantly hypoechoic fl uid-containing lesion in the righ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1378

در علم پزشکی جهت تشخیص بسیاری از بیماریها از تصاویر رادیولوژی استفاده می شود. تصویربرداری با ct-scan, mri از جمله روشهایی هستند که اخیرا مورد استفاده قرار گرفته اند. با توجه به اینکه تصاویر بدست آمده از مقطع مورد نظر به صورت دوبعدی می باشند و همواره در تشخیص بسیاری از بیماریها ممکن است پزشک معالج را دچار خطا کنند، لذا ارائه روشهایی جهت ساخت تصاویر سه بعدی اعضای داخلی بدن از این تصاویر دوبعدی می...

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