#Localizer images ct series

#Localizer images ct series

If vtkDICOMReader identifies a stack with only one image, it is probably a localizer, and if it is orthogonal to the remainder of the series (and especially if they intersect it or are captured within its projection), then it is almost definitely a localizer. Hence, I would say that the best way to identify a localizer is by geometry. From what I've seen, neither (a) or (b) are true for MR. However, they are sometimes used when prescribing an MPR. They can be identified by (a) ImageType=LOCALIZER, (b) ReferenceImageSequence that refers to the remaining images in the series, or (c) by their geometry, which is orthogonal to the remaining images in the series, and with a view direction orthogonal to CT axis.įor MR, the use of localizers is rare, since a scout series is usually acquired at the beginning of a study. Key Words: additional filter, CT, dose reduction, localizer radiograph. empty), non-localizer stacks should take precedenceĭavid Clunie discusses CT localizers in Part 2 of his Medical Imaging FAQ. doses in CT localizer radiography while maintaining image quality and performance. Localizers need to be automatically identified.

So, in order to fix this problem with the localizer, two things need to be done: volume CT dose index (CTDIvol), table height, whether the localizer image. Compared with conventional radiographic images, CT localizer images a. If not set, the value is an empty string. Impact of Posteroanterior Versus Anteroposterior Localizer Image and Table. Radiation dose associated with common computed tomography examinations and the associated lifetime attributable risk of. Crossref, Medline, Google Scholar 34 Smith-Bindman R, Lipson J, Marcus R et al. The user selects stacks via SetDesiredStackID(name) where 'name' is a string. Patient size measured on CT images as a function of age at a tertiary care children’s hospital. The vtkDICOMReader will sort the localizer into its own stack, which will be the first stack and therefore the one that is read by default.

It's common for a CT series to start with a localizer.