Registration of low resolution medical images

There are several situations in which the registration of two medical images is desirable. One example is the registration of two images of the same organ taken using different radionuclide tracers, for example the ventilation and perfusion components of a V/Q lung scan, where the aim is to compare...

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Bibliographic Details
Published in:Physics in medicine & biology 1992-07, Vol.37 (7), p.1485-1498
Main Author: Barber, D C
Format: Article
Language:English
Subjects:
Biological and medical sciences
Diagnostic Imaging - methods
Humans
Image Processing, Computer-Assisted - methods
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Miscellaneous. Technology
Radiodiagnosis. Nmr imagery. Nmr spectrometry
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Summary:There are several situations in which the registration of two medical images is desirable. One example is the registration of two images of the same organ taken using different radionuclide tracers, for example the ventilation and perfusion components of a V/Q lung scan, where the aim is to compare the regional uptake of the two tracers. Another example is the registration of images of an organ belonging to a single patient but taken at different times, where the aim is to follow changes in tracer uptake. Such techniques require a reliable method of registering images. One image is usually brought into registration with another image using a coordinate transfer function (CTF) and the central problem in image registration is the determination of the appropriate CTF. A new semi-automatic approach to the problem of finding the CTF for similar images is described which is especially applicable to low resolution images.
ISSN:0031-9155
1361-6560
DOI:10.1088/0031-9155/37/7/002