PACS and multimodality in medical imaging.
A PACS (Picture Archiving and Communication System) is a system that is able to store, exchange, display and manipulate images and associated diagnoses from any modality within a hospital in a timely and cost-effective way. Several developments, such as the DICOM standard, fast and convenient networking, and new storage solutions for large amounts of data, make the setup of such a PACS system possible. As the information acquired with various imaging modalities is then available and often complementary, it is desirable for the clinician to have a point-by-point spatial co-registration of images from different modalities in order to enable a synergistic use of the multimodality imaging of a patient for increased diagnostic accuracy. Various types of algorithms are available for the matching of medical images from the same or from different modalities. Co-registration algorithms based on voxel properties consist of a similarity or dissimilarity measure and an iterative or non-iterative method minimizing the dissimilarity or maximizing the similarity between the two images by a transformation of one image relative to the other.
D'Asseler
Y
Y
ELIS, MEDISIP, IBITECH, University of Gent, Belgium. yves.dasseler@rug.ac.be
Koole
M
M
Van Laere
K
K
Vandenberghe
S
S
Bouwens
L
L
Van de Walle
R
R
Van de Wiele
C
C
Lemahieu
I
I
Dierckx
R A
RA
D001530:Belgium; D003952:Diagnostic Imaging / Q000295:instrumentation*; D006751:Hospital Information Systems; D006801:Humans; D009684:Nuclear Medicine Department, Hospital; D011873:Radiology Information Systems / Q000295:instrumentation*; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation*