Show simple item record

dc.contributor.authorMott, David J
dc.date.accessioned2014-12-09T12:09:25Z
dc.date.available2014-12-09T12:09:25Z
dc.date.issued1983-07
dc.identifier.citationEnhancement of computed tomographic scanner based digital radiographic images. 1983, 56 (667):453-60 Br J Radiolen
dc.identifier.issn0007-1285
dc.identifier.pmid6860893
dc.identifier.urihttp://hdl.handle.net/10541/336951
dc.description.abstractScanned digital radiographs are one of the imaging facilities available on the EMI 7070 scanner. The images offered by the system were found to be clinically poor and the reason for this was that the round shape of the patient was forming the major component of the image. Two empirical methods to account effectively for patient shape have been investigated and are now in clinical use. The first method assumes that the patient shape is approximated to a second-order polynomial of the picture element position. For each line of the image a second-order polynomial function is fitted to the image data, then removed from the image data. The second method involves using the existing CT wedge as an average compensation wedge to remove the majority of the effect of the patient shape. The relative merits and clinical application of both techniques are discussed.
dc.language.isoenen
dc.rightsArchived with thanks to The British journal of radiologyen
dc.subject.meshHumans
dc.subject.meshRadiographic Image Enhancement
dc.subject.meshRadiography, Abdominal
dc.subject.meshTomography, X-Ray Computed
dc.titleEnhancement of computed tomographic scanner based digital radiographic images.en
dc.typeArticleen
dc.contributor.departmentRegional Department of Medical Physics and Bioengineering, Christie Hospital, Withington, Manchesteren
dc.identifier.journalBritish Journal of Radiologyen
html.description.abstractScanned digital radiographs are one of the imaging facilities available on the EMI 7070 scanner. The images offered by the system were found to be clinically poor and the reason for this was that the round shape of the patient was forming the major component of the image. Two empirical methods to account effectively for patient shape have been investigated and are now in clinical use. The first method assumes that the patient shape is approximated to a second-order polynomial of the picture element position. For each line of the image a second-order polynomial function is fitted to the image data, then removed from the image data. The second method involves using the existing CT wedge as an average compensation wedge to remove the majority of the effect of the patient shape. The relative merits and clinical application of both techniques are discussed.


This item appears in the following Collection(s)

Show simple item record