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CT Links
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Mar 5 2012, 3:43 PM EST |
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CT Links
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Mar 5 2012, 3:42 PM EST |
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CT Guru Forum, This FREE website is totally devoted to Computed Tomography! This site was created primarily as a resource for all CT Techs out there, new and old alike, who want to pass the ARRT’s CT Boards.ImPACT, Welcome to the web site of the ImPACT group.
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CT Links
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Nov 19 2010, 8:08 AM EST |
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CTGuru,CTGuru, This FREE website is totally devoted to Computed Tomography! This site was created primarily as a resource for all CT Techs out there, new and old alike, who want to pass the ARRT’s CT Boards.ImPACT, Welcome to the web site of the ImPACT group.
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CT Links
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Nov 19 2010, 8:07 AM EST |
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CTGuru, This FREE website is totally devoted to Computed Tomography! This site was created primarily as a resource for all CT Techs out there, new and old alike, who want to pass the ARRT’s CT Boards.ImPACT, Welcome to the web site of the ImPACT group. We
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CT Links
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Nov 19 2010, 8:00 AM EST |
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New updated page ) Cutting edge information on body CT (Computed tomography) including a 3D vascular atlas with volume rendering, spiral CT protocols, teaching files, and case of the week.ImPACT, Welcome to the web site of the ImPACT group. We are the UK's
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CT Links
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Nov 19 2010, 7:58 AM EST |
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CT Image Quality
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May 30 2010, 10:13 AM EDT |
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<div style="width:425px" id="__ss_210432"><strong style="display:block;margin:12px 0 4px"><a href="http://www.slideshare.net/NYCCT1199/ct-image-quality-210432" title="Ct Image Quality">Ct Image Quality</a></strong><object id="__sse210432" width="425" height="355"><param name="movie" value="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=ct-image-quality-1198330255957582-5&stripped_title=ct-image-quality-210432" /><param name="allowFullScreen" value="true"/><param name="allowScriptAccess" value="always"/><embed name="__sse210432" src="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=ct-image-quality-1198330255957582-5&stripped_title=ct-image-quality-210432" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="355"></embed></object><div style="padding:5px 0 12px">View more <a href="
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CT Image Quality
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May 30 2010, 10:12 AM EDT |
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<div style="width:425px" id="__ss_210432"><strong style="display:block;margin:12px 0 4px"><a href="http://www.slideshare.net/NYCCT1199/ct-image-quality-210432" title="Ct Image Quality">Ct Image Quality</a></strong><object id="__sse210432" width="425" height="355"><param name="movie" value="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=ct-image-quality-1198330255957582-5&stripped_title=ct-image-quality-210432" /><param name="allowFullScreen" value="true"/><param name="allowScriptAccess" value="always"/><embed name="__sse210432" src="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=ct-image-quality-1198330255957582-5&stripped_title=ct-image-quality-210432" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="355"></embed></object><div style="padding:5px 0 12px">View more <a href="
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Noise
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May 29 2010, 4:57 PM EDT |
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of such large objects is independent of the spatial resolution used in the imager, and only depends on the X-ray dose efficiency of the detection process. In addition, retrospective smoothing or filtering fully recovers the noise increase. From GE Medcyclopaedia
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Noise
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May 29 2010, 4:50 PM EDT |
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CT noisethe manifestation in computed tomography CT images of random fluctuations in the measurements due to quantum noise in the detected X rays and other
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Contrast Resolution
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May 29 2010, 4:45 PM EDT |
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measures the ability to distinguish between differences in image intensity. The inherent contrast resolution of a digital image is given by the number of possible
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Artefacts
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May 29 2010, 4:34 PM EDT |
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thick slice CT scans in the posterior fossa. See also edge gradient effect.From GE: GE Medcyclopaedia Ring ArtefactsInsufficient exposure results in concentric circles in the center of the field of view.The ring artifact is seen here in the left lobe of the liver.
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Artefacts
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May 29 2010, 4:29 PM EDT |
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path. This discrepancy results in streak artefacts that occur tangential to object detail with sharp attenuation transitions. It also causes streak artefacts connecting partial volume structures, such as objects that occupy only part of the slice thickness. Such artefacts are often seen in thick slice CT scans in
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Artefacts
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May 29 2010, 4:24 PM EDT |
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Multi-slice scanners are prone to a similar type of transaxial image distortion due to helical interpolation as single-slice scanners. Their severity is reduced by the
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Artefacts
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May 29 2010, 4:18 PM EDT |
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when there is least cardiac motion. Article from: http://radiographics.rsna.org/content/24/6/1679.full Multislice Artefacts Partial Volume Artefacts Ring ArtefactsInsufficient exposure results in concentric circles in the center of the field of view.The ring artifact is seen here in the left lobe of the liver.
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Artefacts
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May 29 2010, 4:12 PM EDT |
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Overscan and underscan modes: The maximum discrepancy in detector readings occurs between views obtained toward the beginning and end of a 360° scan. Some scanner
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Artefacts
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May 29 2010, 4:01 PM EDT |
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There were only format changes (bold, italics, etc.) in this version. See this version for details.
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Artefacts
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May 29 2010, 4:00 PM EDT |
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artifacts due to beam hardening. Article from: http://radiographics.rsna.org/content/24/6/1679.full Motion Artefacts Multislice Artefacts Partial Volume Artefacts Ring ArtefactsInsufficient exposure results in concentric circles in the center of the field of view.The ring artifact is seen here in the left lobe of the liver.
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Artefacts
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May 29 2010, 3:51 PM EDT |
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Patients are normally asked to take off removable metal objects such as jewelry before scanning commences. For non-removable items, such as dental fillings, prosthetic devices,
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My Profile
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May 6 2010, 4:51 PM EDT |
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