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Fig. 2 | Radiation Oncology

Fig. 2

From: Appropriate margin for planning target volume for breast radiotherapy during deep inspiration breath-hold by variance component analysis

Fig. 2

a A representative image of the detected edge of chest wall position. The box indicates the ROI used to calculate the position of the chest wall. The chest wall position in the DRR image is set to zero. Images a, b, and n are example images of shallow, just, and deep inspiration, respectively. b A representative trace of the position error between cine EPID and DRR images. The vertical axis indicates the position error; the horizontal axis represents time. The points corresponding to images a, b, and n in the above figure are indicated by a circle. ROI, region of interest; DRR, digitally reconstructed radiograph; EPID, electronic portal imaging device

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Radiation Oncology

ISSN: 1748-717X

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