نتایج جستجو برای: 64-Slices CT scanner

تعداد نتایج: 254628  

Journal: :European heart journal 2011
Jelena R Ghadri Robert Goetti Michael Fiechter Aju P Pazhenkottil Silke M Küest Rene N Nkoulou Christina Windler Ronny R Buechel Bernhard A Herzog Oliver Gaemperli Christian Templin Philipp A Kaufmann

AIMS Coronary artery calcium (CAC) scoring has emerged as a tool for risk stratification and potentially for monitoring response to risk factor modification. Therefore, repeat measurements should provide robust results and low inter-scanner variability for allowing meaningful comparison. The purpose of this study was to investigate inter-scanner variability of CAC for Agatston, volume, and mass...

Ahmad Farahani Behrooz Reafie Hassan Hashemi Leaila Karimi-Afshar Mahmoud Allahverdi, Mohammadreza Ay Morteza Bakhteiari Nader Riahi Alam Tayeb Alahverdi purfallah

Introduction: Computed tomography (CT) has numerous applications in clinical procedures but its main problem is its high radiation dose to the patients compared to other imaging modalities using x-ray. CT delivers approximately high doses to the nearby tissues due to the scattering effect, fan beam (beam divergence) and limited collimator efficiency. The radiation dose from multi-slice scanners...

2008
E. FANUCCI E. SPERA L. OTTRIA A. BARLATTANI N. FUSCO I. MYLONAKOU P. BROCCOLI G. SIMONETTI

Mandibular kinetics is made up of complex movements in addition to the opening and closing movements of the jaw: they take place on the sagittal plane, on the vertical plane and on the transverse plane (1). The Bennett movement is part of this group of movements (2-3). It is a complex lateral movement or lateral shift of the BENNETT MOVEMENT OF MANDIBLE: A COMPARISON BETWEEN TRADITIONAL METHODS...

Journal: :Journal of the American College of Radiology : JACR 2009
Mahadevappa Mahesh James M Hevezi

he short answer is yes. At this oint in time, it seems that the soalled slice wars with regard to the umber of slices provided per comuted tomographic (CT) gantry roation may be reaching a plateau. At he same time, increasing concerns bout radiation dose due to CT exminations are fueling the efforts to educe radiation dose and leading o the beginning of the so-called ose wars. Since 1998, there...

2006
Ciprian Radu

This paper presents few notes about the reconstruction of a 3D model of fibula bone using thomographic slices from CT scanner. CT images are reassembled to illustrate a 3D presentation of an anatomic structure by using a 3D reconstruction software, Mimics. Mimics is a software system for interfacing from a medical or technical scanner (mostly a CAT or CT scanner but also MRI) to Rapid Prototypi...

2004
Marc Kachelriess

Phase–correlated CT is the measurement of an organ that exhibits quasi–periodic motion. Dedicated image reconstruction algorithms utilize only those data ranges that have been acquired within the desired motion phase and achieve to produce motion free image data. Dynamic CT means covering an organ of interest multiple times to monitor the concentration of contrast agents over the time. Thus inf...

Journal: :European radiology 2005
Simon Wildermuth Sebastian Leschka Firat Duru Hatem Alkadhi

The recently developed 64-slice CT scanner together with the use of 2-D and 3-D reconstructions can aid the cardiovascular surgeon and interventional radiologist in visualizing exact geometric relationships to plan and execute complex procedures via minimally invasive or standard approaches. Cardiac 64-slice CT considerably benefits from the high temporal and spatial resolution allowing the rel...

Journal: :dental research journal 0
farzad esmaeili masume johari pezhman haddadi

background: cone beam computed tomography (cbct) is an alternative to a computed tomography (ct) scan, which is appropriate for a wide range of craniomaxillofacial indications. the long‑term use of metallic materials in dentistry means that artifacts caused by metallic restorations in the oral cavity should be taken into account when utilizing cbct and ct scanners. the aim of this study was to ...

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