Quantification of organ motion during chemoradiotherapy of rectal cancer using cone-beam computed tomography.

Journal article

PURPOSE: There has been no previously published data related to the quantification of rectal motion using cone-beam computed tomography (CBCT) during standard conformal long-course chemoradiotherapy. The purpose of the present study was to quantify the interfractional changes in rectal movement and dimensions and rectal and bladder volume using CBCT and to quantify the bony anatomy displacements to calculate the margins required to account for systematic (Σ) and random (σ) setup errors. METHO...

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Authors: Chong, I; Hawkins, M; Hansen, V; Thomas, K; McNair, H

• Publication status: Published
• Journal: International journal of radiation oncology, biology, physics
• Volume: 81
• Issue: 4
• Pages: e431-e438
• Publication date: 2011-11-01
• DOI: 10.1016/j.ijrobp.2011.04.060
• EISSN: 1879-355X
• ISSN: 0360-3016
• Language: English
• Keywords: Humans; Middle Aged; Radiotherapy Setup Errors; Movement; Adult; Organ Size; Radiotherapy Planning, Computer-Assisted; Male; Radiotherapy, Conformal; Chemoradiotherapy; Aged, 80 and over; Urinary Bladder; Rectal Neoplasms; Cone-Beam Computed Tomography; Anatomic Landmarks; Female; Analysis of Variance; Rectum; Aged