Impact of motion induced artifacts on automatic registration of lung tumors in Tomotherapy

Highlights • We aimed to validate a tumor-based registration of lung tumors in Tomotherapy. • We explored the effect of motion-induced MV-CT artifacts on automatic registration. • Registration errors were acceptable (within 1.3 ± 1.2 mm). • Only breathing period of 5 s induced more significant regis...

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Veröffentlicht in:	Physica medica 2015-12, Vol.31 (8), p.963-968
Hauptverfasser:	Goossens, Samuel, Descampe, Antonin, Orban de Xivry, Jonathan, Lee, John A, Delor, Antoine, Janssens, Guillaume, Geets, Xavier
Format:	Artikel
Sprache:	eng
Schlagworte:	Automation Averaged kV-CT Four-Dimensional Computed Tomography Humans IGRT Image Processing, Computer-Assisted - methods Lung Neoplasms - diagnostic imaging Lung Neoplasms - physiopathology Lung Neoplasms - radiotherapy Movement MV-CT Phantoms, Imaging Radiology Radiotherapy, Intensity-Modulated Respiration Rotation Tumor-based positioning
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Beschreibung
Zusammenfassung:	Highlights • We aimed to validate a tumor-based registration of lung tumors in Tomotherapy. • We explored the effect of motion-induced MV-CT artifacts on automatic registration. • Registration errors were acceptable (within 1.3 ± 1.2 mm). • Only breathing period of 5 s induced more significant registration errors. • This period should be avoided by applying audio guidance during MV-CT acquisition.
ISSN:	1120-1797 1724-191X
DOI:	10.1016/j.ejmp.2015.07.140