Kilo-Voltage Cone-Beam Computed Tomography Setup Measurements for Lung Cancer Patients; First Clinical Results and Comparison With Electronic Portal-Imaging Device

Borst, Gerben R.; Sonke, Jan‐Jakob; Betgen, A.; Remeijer, P.; Herk, Marcel van; Lebesque, Joos V.

doi:10.1016/j.ijrobp.2007.01.014

Cited by 118 publications

(74 citation statements)

References 22 publications

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“…EPI images and bony anatomy were used to evaluate set up displacements and although the ∑ and σ errors found here agreed with other published reports EPI has been shown to be less accurate than 3D, kilo-voltage imaging, cone beam CT (CBCT) due to the poor image quality of EPI in the thorax region [31]. Using the diaphragm as a surrogate of tumour position may seem logical, particularly since the patient is in breath hold.…”

Section: Discussionsupporting

confidence: 81%

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

McNair

Brock

Symonds-Tayler

et al. 2009

Radiotherapy and Oncology

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Section: Discussionsupporting

confidence: 81%

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

McNair

Brock

Symonds-Tayler

et al. 2009

Radiotherapy and Oncology

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“…CBCT has demonstrated improved accuracy compared to other verification methods [7,8], and a daily set-up correction using CBCT would be ideal [9]. However, daily IGRT is time consuming and pose a heavy work load in a busy treatment facility.…”

Section: Discussionmentioning

confidence: 99%

Set-up errors in patients undergoing image guided radiation treatment. Relationship to body mass index and weight loss

et al. 2008

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“…However, use of this modality for setup purposes has inherent limitations, as bony anatomy such as chest wall is used as a surrogate for treatment position verification, without assessment of the soft tissue. Cone‐beam computed tomography (CBCT) has been integrated into routine clinical practice in many tumour sites, as it has been shown to offer advantages over EPI 8, 9, 10. The main advantages of using CBCT instead of EPI are the use of 3D instead of two‐dimensional (2D) images of the patient's internal anatomy, and its ability to offer better soft tissue and anatomical contrast 11, 12.…”

Section: Introductionmentioning

confidence: 99%

Comparison of setup accuracy of three different image assessment methods for tangential breast radiotherapy

et al. 2016

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IntroductionTo compare the differences in setup errors measured with electronic portal image (EPI) and cone‐beam computed tomography (CBCT) in patients undergoing tangential breast radiotherapy (RT). Relationship between setup errors, body mass index (BMI) and breast size was assessed.MethodsTwenty‐five patients undergoing postoperative RT to the breast were consented for this study. Weekly CBCT scans were acquired and retrospectively registered to the planning CT in three dimensions, first using bony anatomy for bony registration (CBCT‐B) and again using breast tissue outline for soft tissue registration (CBCT‐S). Digitally reconstructed radiographs (DRR) generated from CBCT to simulate EPI were compared to the planning DRR using bony anatomy in the V (parallel to the cranio‐caudal axis) and U (perpendicular to V) planes. The systematic (Σ) and random (σ) errors were calculated and correlated with BMI and breast size.ResultsThe systematic and random errors for EPI (Σ V = 3.7 mm, Σ U = 2.8 mm and σ V = 2.9 mm, σ U = 2.5) and CBCT‐B (Σ V = 3.5 mm, Σ U = 3.4 mm and σ V = 2.8 mm, σ U = 2.8) were of similar magnitude in the V and U planes. Similarly, the differences in setup errors for CBCT‐B and CBCT‐S in three dimensions were less than 1 mm. Only CBCT‐S setup error correlated with BMI and breast size.Conclusions CBCT and EPI show insignificant variation in their ability to detect setup error. These findings suggest no significant differences that would make one modality considered superior over the other and EPI should remain the standard of care for most patients. However, there is a correlation with breast size, BMI and setup error as detected by CBCT‐S, justifying the use of CBCT‐S for larger patients.

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Kilo-Voltage Cone-Beam Computed Tomography Setup Measurements for Lung Cancer Patients; First Clinical Results and Comparison With Electronic Portal-Imaging Device

Cited by 118 publications

References 22 publications

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

Feasibility of the use of the Active Breathing Co ordinator™ (ABC) in patients receiving radical radiotherapy for non-small cell lung cancer (NSCLC)

Set-up errors in patients undergoing image guided radiation treatment. Relationship to body mass index and weight loss

Comparison of setup accuracy of three different image assessment methods for tangential breast radiotherapy

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