Observational Study
Copyright ©The Author(s) 2021.
World J Gastroenterol. Nov 14, 2021; 27(42): 7387-7401
Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7387
Figure 1
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Figure 1  Study flowchart.
Figure 2
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Figure 2 Kaplan Meier curve–cohort. A: The Kaplan-Meier curve for the cohort overall survival post-radiotherapy treatment; B: The Kaplan-Meier curve for the cohort progression free survival post-radiotherapy treatment. NA: Not applicable.
Figure 3
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Figure 3 Kaplan Meier curve-treatment intent. A: The Kaplan-Meier curve for the overall survival (OS) of patients receiving curative intent standard image-guided radiotherapy (S-IGRT) and fiducial-based IGRT (F-IGRT) treatment; B: The Kaplan-Meier curve for the progression free survival (PFS) of patients receiving curative intent S-IGRT and F-IGRT treatment; C: The Kaplan-Meier curve for the OS of patients receiving palliative intent F-IGRT treatment; D: The Kaplan-Meier curve for the PFS of patients receiving palliative intent F-IGRT treatment, respectively. NA: Not applicable; S-IGRT: Standard image-guided radiotherapy; LF-IGRT: Liquid fiducial-based image-guided radiotherapy.
Figure 4
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Figure 4 Kaplan Meier curve-site and histopathology. A: The Kaplan-Meier curve for the overall survival (OS) of patients with oesophageal squamous cell carcinoma (SCC) and adenocarcinoma (AC); B: The Kaplan-Meier curve for the progression free survival (PFS) of patients with oesophageal SCC and AC; C: The Kaplan-Meier curve for the OS of patients with gastric AC; D: The Kaplan-Meier curve for the PFS of patients with gastric AC. NA: Not applicable; SCC: Squamous cell carcinoma; AC: Adenocarcinoma.
Figure 5
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Figure 5 Endoscopically inserted liquid fiducials and liquid fiducial-based image-guided radiotherapy. A: An Fluorodeoxyglucose positron emission tomography of a patient with oesophageal cancer which demonstrates no uptake within the lesion; B: Planning computerized tomography (CTs) showing the fiducials without and with the high dose clinical target volume (CTV) (pink); C: Planning CTs showing the fiducials without and with the low dose CTV (yellow); D: Cone-beam CT (CBCT) images that are not labelled; E: CBCT images that are labelled.