نتایج جستجو برای: resolution computed tomography

تعداد نتایج: 528036  

Journal: :iranian journal of radiology 0
solmaz valizadeh department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran hamidreza pouraliakbar dental research center, research institute of dental sciences, shahid beheshti university of medical sciences, tehran, iran leila kiani rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran yaser safi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran leila alibakhshi department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran; department of radiology, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. tel: +98-2122907040, fax: +98-2188804037

conclusions ultrasound is recommended as the first choice when fb is located within the superficial soft tissues with no bone around it. in case of penetration of fb into deeper tissues or beneath bone, ct or cbct are recommended. otherwise, considering lower dose, cbct is preferred over ct. we can use mri if the fb is not ferromagnetic. however, ct is the first choice in emergency situations b...

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: :AIP Advances 2022

Spatial resolution is a key parameter that determines the smallest resolved scale in volumetric computed tomography. However, evaluation process typically confined within plane, and tomographic usually treated as two dimensional concept. In this work, full map of three-dimensional (3D) spatial along radial directions was obtained through combined laser induced fluorescence measurement on well-c...

Journal: :American Journal of Roentgenology 1983

Journal: :South African Journal of Radiology 2012

Journal: :JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH 2017

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...

2008
Thomas PAUL Zhenhui HE

In today’s quality market, achieving the smallest feature recognition possible in the inspection process has become a higher priority than ever before. Due to complex geometries and miniaturization of many high reliability components in the automotive, electronics and aerospace industries, achieving this level of feature recognition has also become increasingly difficult. Due to inherent limita...

Journal: :The European respiratory journal 2004
D Rawlings D Tennant J Furness

1. Calverley PM, Boonsawat W, Cseke Z, Zhong N, Peterson S, Olsson H. Maintenance therapy with budesonide and formoterol in chronic obstructive pulmonary disease. Eur Respir J 2003; 22: 912–919. 2. Szafranski W, Cukier A, Ramirez A, et al. Efficacy and safety of budesonide/formoterol in the management of chronic obstructive pulmonary disease. Eur Respir J 2003; 21: 74–81. 3. Calverley P, Pauwel...

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