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目前显示的是标签为“Computed Tomography”的博文

Four Chamber Normative Data for Computed Tomography Angiography in the Axial Plane

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=45299#.VL37qSzQrzE Author(s)     Weston Whittington , Akil Loli , Richard Gerkin , Kenneth Desser Affiliation(s) Banner Good Samaritan Medical Center, Phoenix, USA . ABSTRACT Background: Computed Tomography Angiography (CTA) is a new and promising type of imaging to evaluate cardiac structure and function. Although it does require injection of contrast material and some radiation exposure, it is much less invasive than conventional catheter based on angiography. It has been already shown to correlate well with echocardiography images, but normative values have yet to be established. Objectives: To publish the first known data on CTA measurements for all four chambers of the heart. Methods: We conducted a retrospective chart review study of around 3000 patients over a three-year period (2006-2008) from a private cardiology practice in Phoenix, A...

Dose Efficiency in Dual Source High-Pitch Computed Tomography of the Chest

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51853#.VHfPkmfHRK0 Author(s) Boris Bodelle * , Thomas Lehnert , Martin Beeres , Thomas Josef Vogl , Boris Schulz Affiliation(s) Department of Diagnostic and Interventional Radiology, Clinic of the Goethe University, Frankfurt, Germany . ABSTRACT Objectives: Evaluation of radiation efficiency of dual source high-pitch (DSHP) chest CT in comparison to single source technique with special regards to individual patient anatomy. Methods: 150 consecutive patients who underwent chest CT with automated tube current modulation were evaluated retrospectively and divided into three study groups, each with an equal quantity of 50 patients (...