International Journal of Radiation Oncology*Biology*Physics
Original ContributionLung density as measured by computerized tomography: implications for radiotherapy☆
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Cited by (97)
Impact of lung density on isolated lung tumor dose in VMAT using inline MR-Linac
2020, Physica MedicaCitation Excerpt :From these studies, it is expected that the lung density varies from 0.1 g/cm3 to 0.3 g/cm3 in lung cancer patients. Lung density affects lung tumor dose [19,22]. Lasse et al. [22] reported that the median tumor dose decreased from 89.2% to 74.9% for 6 MV and from 83.3% to 61.6% for 18 MV, respectively, when changing lung density from 0.4 to 0.1 g/cm3.
Geant4 Monte Carlo investigation of the magnetic field effect on dose distributions in low-density regions in magnetic resonance image-guided radiation therapy
2019, Physica MedicaCitation Excerpt :In the patient's body, in lowdensity tissues, such as the lung, the electron ranges are longer; hence the influence of the magnetic field strength is greater than in other tissues (e.g. soft tissue). It has been reported that the lung density changes with the patient's age, health condition, and respiratory phase [18,19]. In this study, the influence of the transverse and longitudinal magnetic field strength on dose distributions for various lung densities was quantitatively investigated by comparing the percentage depth doses (PDDs) and lateral dose profiles, using the Geant4 Monte Carlo (MC) code.
Lung dose calculation with SPECT/CT for <sup>90</sup>Yittrium radioembolization of liver cancer
2013, International Journal of Radiation Oncology Biology PhysicsCitation Excerpt :Actual radiological density depends on patient, scanning timing (perfusion and ventilation phase), scanning position, and the inclusion/exclusion of the circulating blood. Average densities for supine position range from 0.2 to 0.35 g/cm3, depending on patient age (8). Our LMD calculation depends strongly on the actual lung density.
Proton pencil beam scanning treatment with feedback based voluntary moderate breath hold
2020, Medical DosimetryCitation Excerpt :Lastly the comparison between the nominal plan and the additional calculations was performed. Prior studies44,45 found that lung density varies from a middle value of 0.10 g/cm3 (for inspiration) to a low of 0.30 g/cm3 (for expiration). The above lower and upper values were roughly 30% lower and higher than the mean value of the 2.
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Supported by grants from the National Cancer Institute (Canada), the Medical Research Council of Canada and the Ontario Cancer Treatment and Research Foundation.
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Medical Physicist.
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Radiation Oncologist.