Change: 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.   View changes from previous version. (Word count: 258)  View all updates.

Change: 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   View changes from previous version. (Word count: 256)  View all updates.

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 216)  View all updates.

Change: <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="   View changes from previous version. (Word count: 120)  View all updates.

Change: 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   View changes from previous version. (Word count: 404)  View all updates.

Change: 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.   View changes from previous version. (Word count: 1120)  View all updates.

Change: 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   View changes from previous version. (Word count: 881)  View all updates.

Change: 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   View changes from previous version. (Word count: 761)  View all updates.

Change: 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.   View changes from previous version. (Word count: 343)  View all updates.

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