DRR and Portal Image Registration for Automatic Patient Positioning in Radiotherapy Treatment.
Image processing turns out to be essential in the planning and verification of radiotherapy treatments. Before applying a radiotherapy treatment, a dosimetry planning must be performed. Usually, the planning is done by means of an X-ray volumetric analysis using computerized tomography, where the ar...
| Publicado en: | Journal of Digital Imaging Vol. 24; no. 6; pp. 999 - 1010 |
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| Autores principales: | , , , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Springer Nature
Dec2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104596126&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104596126 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Dec2011 vid: 24 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104596126 67104984 10.1007/s10278-011-9376-z NLM21455811 104596126 ppf: 999 ppct: 11 formats: fmt: @attributes: type: P tig: atl: DRR and Portal Image Registration for Automatic Patient Positioning in Radiotherapy Treatment. aug: au: Bastida-Jumilla, Ma Larrey-Ruiz, Jorge Verdú-Monedero, Rafael Morales-Sánchez, Juan Sancho-Gómez, José-Luis affil: Tecnologías de la Información y las Comunicaciones Department, Universidad Politécnica de Cartagena, Campus Muralla del Mar Antiguo Cuartel de Antigones s/n 30202 Cartagena Spain sug: subj: Patient Positioning Methods Therapy, Computer Assisted Radiotherapy Automation Radiographic Image Enhancement Human Evaluation Research Funding Source ab: Image processing turns out to be essential in the planning and verification of radiotherapy treatments. Before applying a radiotherapy treatment, a dosimetry planning must be performed. Usually, the planning is done by means of an X-ray volumetric analysis using computerized tomography, where the area to be radiated is marked out. During the treatment phase, it is necessary to place the patient under the particle accelerator exactly as considered in the dosimetry stage. Coarse alignment is achieved using fiduciary markers placed over the patient's skin as external references. Later, fine alignment is provided by comparing a digitally reconstructed radiography (DRR) from the planning stage and a portal image captured by the accelerator in the treatment stage. The preprocessing of DRR and portal images, as well as the minimization of the non-shared information between both kinds of images, is mandatory for the correct operation of the image registration algorithm. With this purpose, mathematical morphology and image processing techniques have been used. The present work describes a fully automatic method to calculate more accurately the necessary displacement of the couch to place the patient exactly at the planned position. The proposed method to achieve the correct positioning of the patient is based on advanced image registration techniques. Preliminary results show a perfect match with the displacement estimated by the physician. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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