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Evaluation of Positioning Accuracy of Four Different Immobilizations Using Cone-Beam CT in Radiotherapy of Non–Small-Cell Lung Cancer by Jin Wang; Renming Zhong; Sen Bai; You Lu; Qingfeng Xu; Xiao-juan Zhou; Feng Xu is a Medicine article available to read on EtoBox.

What is Evaluation of Positioning Accuracy of Four Different Immobilizations Using Cone-Beam CT in Radiotherapy of Non–Small-Cell Lung Cancer about?

Purpose: To evaluate the positioning accuracy of four different immobilizations by use of cone-beam computed tomography guidance for radiotherapy of non-small-cell lung cancer (NSCLC). Methods and Materials: Sixty-seven patients with NSCLC received conventional or stereotactic body radiotherapy. Of these, 30 were immobilized with a thermoplastic frame (TF), 16 with a thermoplastic frame and active breathing control (TF-ABC), 7 with a stereotactic body frame (SBF), and 14 with a stereotactic body frame and active breathing control (SBF-ABC). Cone-beam computed tomography scans at initial setup and after correction were registered to planning computed tomography. The positional errors in the left-to-right, superior-inferior, and anterior-posterior directions were analyzed. The planning target volume margins were calculated. Results: The precorrection systematic and random errors ranged from 1.9 to 4.2 mm for TF, 1.9 to 4.3 mm for SBF, 1.2 to 5.8 mm for TF-ABC, and 2.3 to 3.9 mm for SBF-ABC. The postcorrection systematic and random errors ranged from 0.3 to 1.9 mm for the four immobilizations. The planning target volume margins (conventional vs. stereotactic body radiotherapy) were 15

Who reads Evaluation of Positioning Accuracy of Four Different Immobilizations Using Cone-Beam CT in Radiotherapy of Non–Small-Cell Lung Cancer?

Author

Jin Wang; Renming Zhong; Sen Bai; You Lu; Qingfeng Xu; Xiao-juan Zhou; Feng Xu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0360-3016)

Published

2010

Language

EN

Field

Medicine (Health Sciences)