A comparative study of surface- and volume-based techniques for the automatic registration between CT and SPECT brain images

Kagadis, GC; Delibasis, KK; Matsopoulos, GK; Mouravliansky, NA; Asvestas, PA; Nikiforidis, GC

dc.contributor.author	Kagadis, GC	en
dc.contributor.author	Delibasis, KK	en
dc.contributor.author	Matsopoulos, GK	en
dc.contributor.author	Mouravliansky, NA	en
dc.contributor.author	Asvestas, PA	en
dc.contributor.author	Nikiforidis, GC	en
dc.date.accessioned	2014-03-01T01:17:20Z
dc.date.available	2014-03-01T01:17:20Z
dc.date.issued	2002	en
dc.identifier.issn	0094-2405	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14470
dc.subject	Average surface distance	en
dc.subject	CT	en
dc.subject	Image registration	en
dc.subject	Mutual information	en
dc.subject	SPECT	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	accuracy	en
dc.subject.other	algorithm	en
dc.subject.other	article	en
dc.subject.other	comparative study	en
dc.subject.other	computer assisted tomography	en
dc.subject.other	human	en
dc.subject.other	nuclear magnetic resonance imaging	en
dc.subject.other	priority journal	en
dc.subject.other	reliability	en
dc.subject.other	single photon emission computer tomography	en
dc.subject.other	three dimensional imaging	en
dc.subject.other	Algorithms	en
dc.subject.other	Brain	en
dc.subject.other	Brain Neoplasms	en
dc.subject.other	Humans	en
dc.subject.other	Models, Statistical	en
dc.subject.other	Tomography, Emission-Computed, Single-Photon	en
dc.subject.other	Tomography, X-Ray Computed	en
dc.title	A comparative study of surface- and volume-based techniques for the automatic registration between CT and SPECT brain images	en
heal.type	journalArticle	en
heal.identifier.primary	10.1118/1.1445412	en
heal.identifier.secondary	http://dx.doi.org/10.1118/1.1445412	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Image registration of multimodality images is an essential task in numerous applications in three-dimensional medical image processing. Medical diagnosis can benefit from the complementary information in different modality images. Surface-based registration techniques, while still widely used, were succeeded by volume-based registration algorithms that appear to be theoretically advantageous in terms of reliability and accuracy. Several applications of such algorithms for the registration of CT-MRI, CT-PET, MRI-PET, and SPECT-MRI images have emerged in the literature, using local optimization techniques for the matching of images. Our purpose in this work is the development of automatic techniques for the registration of real CT and SPECT images, based on either surface- or volume-based algorithms. Optimization is achieved using genetic algorithms that are known for their robustness. The two techniques are compared against a well-established method, the Iterative Closest Point - ICP. The correlation coefficient was employed as an independent measure of spatial match, to produce unbiased results. The repeated measures ANOVA indicates the significant impact of the choice of registration method on the magnitude of the correlation (F = 4.968, p = 0.0396). The volume-based method achieves an average correlation coefficient value of 0.454 with a standard deviation of 0.0395, as opposed to an average of 0.380 with a standard deviation of 0.0603 achieved by the surface-based method and an average of 0.396 with a standard deviation equal to 0.0353 achieved by ICP. The volume-based technique performs significantly better compared to both ICP (p < 0.05, Neuman-Keuls test) and the surface-based technique (p < 0.05, Neuman-Keuls test). Surface-based registration and ICP do not differ significantly in performance. © 2002 American Association of Physicists in Medicine.	en
heal.publisher	AMER ASSOC PHYSICISTS MEDICINE AMER INST PHYSICS	en
heal.journalName	Medical Physics	en
dc.identifier.doi	10.1118/1.1445412	en
dc.identifier.isi	ISI:000173856900009	en
dc.identifier.volume	29	en
dc.identifier.issue	2	en
dc.identifier.spage	201	en
dc.identifier.epage	213	en