Figures & data
Figure 1. The magnitude of the interfractional baseline shift (3D) for each treatment fraction of the patients treated for lung tumours.
![Figure 1. The magnitude of the interfractional baseline shift (3D) for each treatment fraction of the patients treated for lung tumours.](/cms/asset/07eebb25-7124-4316-a360-3b49b4a407b2/ionc_a_498435_f0001_b.jpg)
Table I. Inter- and intra-fraction PPE for the 15 patients treated for liver tumours.
Table II. Interfraction alignment errors of bony anatomy, tumour, and baseline for the 19 patients treated for lung tumours.
Table III. Intrafraction alignment errors of bony anatomy, tumour, and baseline for the 19 patients treated for lung tumours.
Table IV. PTV margins required to account for the determined inter- and intra-fractional systematic and random localisation errors of the patients treated for lung tumors.
Figure 2. Interfraction mean PPE (3D) as a function of patient BMI. Patients treated without abdominal compression are marked with filled circles and triangles. Upper outliers are marked with arrows (upper fence = 10.6 mm). The correlation is significant when patients treated without compression are included (rs = 0.44, p = 0.014), but not if they are excluded from the data set (rs = 0.19, p = 0.37). A straight line is fitted to all of the data points (Pearson correlation coefficient r = 0.56).
![Figure 2. Interfraction mean PPE (3D) as a function of patient BMI. Patients treated without abdominal compression are marked with filled circles and triangles. Upper outliers are marked with arrows (upper fence = 10.6 mm). The correlation is significant when patients treated without compression are included (rs = 0.44, p = 0.014), but not if they are excluded from the data set (rs = 0.19, p = 0.37). A straight line is fitted to all of the data points (Pearson correlation coefficient r = 0.56).](/cms/asset/93c5af96-703c-49e0-8b4c-941fc6ccbd94/ionc_a_498435_f0002_b.gif)
Figure 3. Mean interfractional baseline shift (3D) of the lung tumours as a function of the distance between the tumour and the spinal cord as measured on the planning CT (rs = 0.74, p < 0.001, including both patients treated with and without abdominal compression). A straight line is fitted to the all of the data points (Pearson correlation coefficient r = 0.70).
![Figure 3. Mean interfractional baseline shift (3D) of the lung tumours as a function of the distance between the tumour and the spinal cord as measured on the planning CT (rs = 0.74, p < 0.001, including both patients treated with and without abdominal compression). A straight line is fitted to the all of the data points (Pearson correlation coefficient r = 0.70).](/cms/asset/e9009c7b-0e26-456f-bbd7-daa3071b6f2a/ionc_a_498435_f0003_b.gif)