An evaluation of the BrainLAB 6D ExacTrac/Novalis Tx System for image-guided intracranial radiotherapy.
PurposeStereotactic-fractionated radiotherapy and radiosurgery (RS) for benign and malignant intracranial lesions relies on a very high degree of accuracy in dose alignment due to the ablative dose delivered, and therefore requires a high-precision image guidance modality. The aim of this review is...
| Publicado en: | Journal of Radiotherapy in Practice Vol. 16; no. 3; pp. 326 - 334 |
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| Autores principales: | , |
| Formato: | pictorial research Journal Article |
| Publicado: |
Cambridge University Press
Sep2017
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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=124973344&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 124973344 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14603969 8OJ jtl: Journal of Radiotherapy in Practice issn: 14603969 maglogo: N pubinfo: dt: Sep2017 vid: 16 iid: 3 pid: 15979 pub: Cambridge University Press artinfo: ui: 124973344 124973344 124973344 10.1017/S1460396917000139 124973344 ppf: 326 ppct: 8 formats: tig: atl: An evaluation of the BrainLAB 6D ExacTrac/Novalis Tx System for image-guided intracranial radiotherapy. aug: au: Montgomery, Claire Collins, Mark affil: Edinburgh Cancer Centre, Western General Hospital, Edinburgh, UK sug: subj: Brain Neoplasms Surgery Brain Neoplasms Radiography Surgery, Computer-Assisted Methods Radiosurgery Methods Tomography, X-Ray Computed Methods Radiotherapy, Computer-Assisted Methods Human Validity Patient Positioning Algorithms Radiation Dosage Radiotherapy, Conformal Stereotaxic Techniques Methods Rotation ab: PurposeStereotactic-fractionated radiotherapy and radiosurgery (RS) for benign and malignant intracranial lesions relies on a very high degree of accuracy in dose alignment due to the ablative dose delivered, and therefore requires a high-precision image guidance modality. The aim of this review is to investigate the localisation and verification accuracy performance of ExacTrac (ET) and Novalis Tx System.Materials and methodsA systematic review of the database Science Direct was carried out using search terms ‘stereotactic radiotherapy (SRT)’ and ‘ET’. All articles before 2000 were excluded. Only articles that involved intracranial lesions, with the exception of one article, were included in the final review.ResultsResults from gold standard Hidden Target Tests and patient data show that patient position can be reproduced within 1·0 mm with the use of ET imaging. In addition, the 6 degrees of freedom algorithm function of ET allows for better translational accuracy as well optimal positioning when rotations are corrected for. Studies showed excellent correlation (p<0·01) between bony ET images and cone beam computed tomography (CBCT) soft tissue registration, evidencing the safe reliance of bony anatomy for image guidance via ET. Shifts were found to be comparable between CBCT and ET.ConclusionThere is the need for regular calibration to prevent systematic errors and potential geographic miss. However, due to ET’s additional benefits, including reduced concomitant dose and faster imaging time, ET is the superior image guidance modality for RS/SRT in the treatment of intracranial lesions. pubtype: Academic Journal doctype: pictorial research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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