Four-Dimensional Computed Tomography–Based Interfractional Reproducibility Study of Lung Tumor Intrafractional Motion

Michalski, Darek; Sontag, Marc R.; Li, Fang; Andrade, Regiane S.; Uslene, Irmute; Brandner, E; Heron, Dwight E.; Yue, Ning J.; Huq, M. Saiful

doi:10.1016/j.ijrobp.2007.10.038

Cited by 34 publications

(33 citation statements)

References 35 publications

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“…A little change in the GTV during the 2-or 3-week period was similar to that in previous reports, in which significant changes in the target volume occurred after $2 weeks (8,9,16,17). A time trend in the tumor motion range was not observed during the treatment course, just as other research has reported (8,9,11,12,(18)(19)(20).…”

Section: Interfraction Variations In Gtv and Igtvsupporting

confidence: 89%

“…Several studies have demonstrated intrafraction and interfraction lung tumor motion with respiratory-correlated or 4D-CT during conventional RT (8)(9)(10)(11)(12)(13). 4D-CT not only images the respiratory motion of tumors and organs at risk but can also reduce motion artifacts.…”

Section: Introductionmentioning

confidence: 99%

“…The interfraction baseline tumor variations have been large (11), but no time trend in the tumor motion range was observed (8,9,11,12). However, few investigations of the interfraction variations in tumor volume and motion on hypofractionated SBRT with respiratory-correlated or 4D-CT have been described.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurement of Interfraction Variations in Position and Size of Target Volumes in Stereotactic Body Radiotherapy for Lung Cancer

Matsugi¹,

Narita²,

Sawada³

et al. 2009

International Journal of Radiation Oncology*Biology*Physics

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Section: Interfraction Variations In Gtv and Igtvsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of Interfraction Variations in Position and Size of Target Volumes in Stereotactic Body Radiotherapy for Lung Cancer

Matsugi¹,

Narita²,

Sawada³

et al. 2009

International Journal of Radiation Oncology*Biology*Physics

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“…Similarly, the limited changes in the range of motion are consistent with previous findings (17). We chose to repeat 4D-CT scanning after approximately 3 weeks of treatment, because this was considered late enough for changes of significance to develop, but early enough such that replanning could occur to enable clinically relevant changes to be made to the plans.…”

Section: Discussionsupporting

confidence: 65%

Role of Adaptive Radiotherapy During Concomitant Chemoradiotherapy for Lung Cancer: Analysis of Data From a Prospective Clinical Trial

Spoelstra

Pantarotto

Koste

et al. 2009

International Journal of Radiation Oncology*Biology*Physics

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“…The range of respiration-induced lung tumor motion is sometimes more than 3 cm [21]. To compensate for the influence of this intrafractional tumor motion, Guckenberger et al tried to evaluate the dose to target volume with 4D dose calculation and stated that the 3D dose at PTV margins underestimated the 4D dose [22].…”

Section: Discussionmentioning

confidence: 99%

Differences in the dose-volume metrics with heterogeneity correction status and its influence on local control in stereotactic body radiation therapy for lung cancer

Ueki

Matsuo

Shibuya

et al. 2012

Journal of Radiation Research

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The purpose of this study is to evaluate the dose–volume metrics under different heterogeneity corrections and the factors associated with local recurrence (LR) after stereotactic body radiation therapy (SBRT) for non-small-cell lung cancer (NSCLC). Eighty-three patients who underwent SBRT for pathologically proven stage I NSCLC were reviewed retrospectively. The prescribed dose was 48 Gy in four fractions at the isocenter (IC) under heterogeneity correction with the Batho power law (BPL). The clinical plans were recalculated with Eclipse (Varian) for the same monitor units under the BPL and anisotropic analytical algorithm (AAA) and with no heterogeneity correction (NC). The dose at the IC, dose that covers 95% of the volume (D95), minimum dose (Min), and mean dose (Mean) of the planning target volume (PTV) were compared under each algorithm and between patients with local lesion control (LC) and LR. The IC doses under NC were significantly lower than those under the BPL and AAA. Under the BPL, the mean PTV D95, Min and Mean were 8.0, 9.4 and 7.4% higher than those under the AAA, and 9.6, 9.2 and 4.6% higher than those under NC, respectively. Under the AAA, all dose–volumetric parameters were significantly lower in T1a patients than in those with T1b and T2a. With a median follow-up of 35.9 months, LR occurred in 18 patients. Between the LC and LR groups, no significant differences were observed for any of the metrics. Even after stratification according to T-stage, no significant difference was observed between LC and LR.

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Four-Dimensional Computed Tomography–Based Interfractional Reproducibility Study of Lung Tumor Intrafractional Motion

Cited by 34 publications

References 35 publications

Measurement of Interfraction Variations in Position and Size of Target Volumes in Stereotactic Body Radiotherapy for Lung Cancer

Measurement of Interfraction Variations in Position and Size of Target Volumes in Stereotactic Body Radiotherapy for Lung Cancer

Role of Adaptive Radiotherapy During Concomitant Chemoradiotherapy for Lung Cancer: Analysis of Data From a Prospective Clinical Trial

Differences in the dose-volume metrics with heterogeneity correction status and its influence on local control in stereotactic body radiation therapy for lung cancer

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