نتایج جستجو برای: computerized tomography image

تعداد نتایج: 560334  

Journal: :journal of medical signals and sensors 0
parinaz mortaheb mehdi rezaeian

segmentation and three‑dimensional (3d) visualization of teeth in dental computerized tomography (ct) images are of dentists’ requirements for both abnormalities diagnosis and the treatments such as dental implant and orthodontic planning. on the other hand, dental ct image segmentation is a difficult process because of the specific characteristics of the tooth’s structure. this paper presents ...

Alireza Abdollahi, Hossein Ghanaati Mitra Mehrazma

Background and Objective: Computerized tomography and fluoroscopic computerized tomography are amongst the methods used for guiding needle biopsy processes; however, fluoroscopic computerized tomography demonstrates the images during the process of biopsy. This study aims to compare and contrast the success of biopsy under guide...

Journal: :iranian journal of pathology 2007
alireza abdollahi mitra mehrazma hossein ghanaati

background and objective: computerized tomography and fluoroscopic computerized tomography are amongst the methods used for guiding needle biopsy processes; however, fluoroscopic computerized tomography demonstrates the images during the process of biopsy. this study aims to compare and contrast the success of biopsy under guide of computerized tomography and fluoroscopic computerized tomograph...

Journal: :iranian journal of cancer prevention 0
morteza sanei taheri cancer research center, shahid beheshti university of medical sciences, tehran, iran h hemadi cancer research center, shahid beheshti university of medical sciences, tehran, iran m sajadi nasab radiology department, loghman hakim hospital, shahid beheshti university of medical sciences, tehran, iran ah jalali advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran d eftekharpour be'sat hospital, army university of medical sciences, tehran, iran

background: to determine the prevalence of incidental findings on brain ct scan in mild head trauma patients. methods: from november 2005 to april 2006, we evaluated 732 ct scans of cases with mild head trauma (glasgow coma scale score of thirteen, fourteen, and fifteen), whom referred to our university affiliated hospital. in this study, we evaluated incidental findings on brain ct of our pati...

Abbas Takavar

In nuclear medicine, there are two methods of imaging, planar and tomography. Single photon emission computerized tomography (SPECT) shows better image details and therefore is influenced more by image parameters such as resolution, uniformity, sensitivity, etc. Manufacturers provide customers with data which are obtained by complicated and sometimes secret methods. Marketing companies te...

Journal: :iranian journal of nuclear medicine 2001
abbas takavar

in nuclear medicine, there are two methods of imaging, planar and tomography. single photon emission computerized tomography (spect) shows better image details and therefore is influenced more by image parameters such as resolution, uniformity, sensitivity, etc. manufacturers provide customers with data which are obtained by complicated and sometimes secret methods. marketing companies test and...

Journal: :archives of trauma research 0
nushin moussavi trauma research center, kashan university of medical sciences, kashan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (kashan university of medical sciences) abdol hossein davoodabadi trauma research center, kashan university of medical sciences, kashan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (kashan university of medical sciences) fatemeh atoof department of biostatistics and epidemiology, tehran university of medical sciences, tehran, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) seyed ebrahim razi internal medicine department, kashan university of medical sciences, kashan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (kashan university of medical sciences) mehdi behnampour trauma research center, kashan university of medical sciences, kashan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (kashan university of medical sciences) hamid reza talari radiology department, kashan university of medical sciences, kashan, ir iran; radiology department, kashan university of medical sciences, kashan, ir iran. tel: +98-36155540026, fax: +98-36155548900سازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (kashan university of medical sciences)

conclusions performing the routine chest ct in high-energy blunt trauma patients (with a mean injury severity of 9), although leading to the diagnosis of some occult injuries, has no impact on the outcome and does not decrease the in-hospital stay and icu admission time. it seems that performing the routine chest ct in these patients may lead to overtreatment of nonsignificant injuries. the dec...

Journal: :iranian journal of radiology 0
sang hoon kim department of internal medicine, cha university college of medicine, bundang, korea seung min yoo department of diagnostic radiology, cha university college of medicine, bundang, korea; department of diagnostic radiology, cha university college of medicine, bundang, korea. tel: +82-317805423, fax: +82-317804800 hwa yeon lee smile radiologic clinic, seoul, korea gun lee department of cardiothoracic surgery, cha university college of medicine, bundang, korea hyung jong kim department of internal medicine, cha university college of medicine, bundang, korea minjung shim department of internal medicine, cha university college of medicine, bundang, korea

diagnosis of cardiac tamponade has been mainly based on clinical features and echocardiography. however, ct may be an initial tool for the evaluation of cardiac tamponade because cutting edge ct is increasingly being installed in the emergency room, and presentation of cardiac tamponade can be nonspecific. importantly, ct has better spatial resolution compared with echocardiography. thus, ident...

2001
Ionildo José Sanches Eduardo Parente Ribeiro

In this work we apply reversible integer wavelet transform to lossless compression of computerized tomography projections (sinograms). Lossy image compression methods can achieve high compression ratios, but sinograms should not loose information during compression process to not affect the image reconstruction.

Journal: :British Journal of Ophthalmology 1980

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