An evaluation of systematic errors on marker-based registration of computed tomography and magnetic resonance images of the liver

Autor: Thomas Woolcot, Evanthia Kousi, Emma Wells, Katharine Aitken, Helen Taylor, Maria A. Schmidt
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Physics and Imaging in Radiation Oncology, Vol 7, Iss , Pp 27-31 (2018)
Druh dokumentu: article
ISSN: 2405-6316
DOI: 10.1016/j.phro.2018.08.001
Popis: We demonstrated a general method to evaluate systematic errors related to Magnetic Resonance (MR) imaging sequences in marker-based co-registration of MR and Computed Tomography (CT) images, and investigated the effect of MR image quality in the co-registration process using clinical MR and CT protocols for stereotactic ablative body radiotherapy (SABR) planning of the liver. Small systematic errors (under 1.6 mm) were detected, unlikely to be a clinical risk to liver SABR. The least favourable marker configuration was found to be a co-planar arrangement parallel to the transaxial image plane. Keywords: Registration, Fiducial markers, Stereotactic radiotherapy, Liver
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