Validation of a Monte Carlo tool for patient-specific dose simulations in multi-slice computed tomography.
Estimating the dose delivered to the patient in X-ray computed tomography (CT) examinations is not a trivial task. Monte Carlo (MC) methods appear to be the method of choice to assess the 3D dose distribution. The purpose of this work was to extend an existing MC-based tool to account for arbitrary...
| Publicado en: | European Radiology Vol. 18; no. 4; pp. 759 - 773 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Apr2008
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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=105647794&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105647794 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Apr2008 vid: 18 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105647794 105647794 31342509 NLM18066555 2009872342 10.1007/s00330-007-0815-7 NLM18066555 105647794 ppf: 759 ppct: 14 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Validation of a Monte Carlo tool for patient-specific dose simulations in multi-slice computed tomography. aug: au: Deak P van Straten M Shrimpton PC Zankl M Kalender WA Deak, Paul van Straten, Marcel Shrimpton, Paul C Zankl, Maria Kalender, Willi A affil: Institute of Medical Physics, University Erlangen-Nürnberg, Henkestr. 91, 91052, Erlangen, Germany sug: subj: Phantoms, Imaging Radiometry Methods Systems Analysis Tomography, X-Ray Computed Equipment and Supplies Computer Simulation Radiation Dosage Radiation Injuries Etiology Radiation Injuries Prevention and Control Radiation Monitoring Radiologic Health Methods Risk Assessment Risk Factors Tomography, X-Ray Computed Adverse Effects Human ab: Estimating the dose delivered to the patient in X-ray computed tomography (CT) examinations is not a trivial task. Monte Carlo (MC) methods appear to be the method of choice to assess the 3D dose distribution. The purpose of this work was to extend an existing MC-based tool to account for arbitrary scanners and scan protocols such as multi-slice CT (MSCT) scanners and to validate the tool in homogeneous and heterogeneous phantoms. The tool was validated by measurements on MSCT scanners for different scan protocols under known conditions. Quantitative CT Dose Index (CTDI) measurements were performed in cylindrical CTDI phantoms and in anthropomorphic thorax phantoms of various sizes; dose profiles were measured with thermoluminescent dosimeters (TLD) in the CTDI phantoms and compared with the computed dose profiles. The in-plane dose distributions were simulated and compared with TLD measurements in an Alderson-Rando phantom. The calculated dose values were generally within 10% of measurements for all phantoms and all investigated conditions. Three-dimensional dose distributions can be accurately calculated with the MC tool for arbitrary scanners and protocols including tube current modulation schemes. The use of the tool has meanwhile also been extended to further scanners and to flat-detector CT. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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