| Cone beam CT for organs motion evaluation in pediatric abdominal neuroblastoma. | |
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MedLine Citation:
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PMID: 22197353 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND AND PURPOSE: To quantify the organ motion relative to bone in different breathing states in pediatric neuroblastoma using cone beam CT (CBCT) for better definition of the planning margins during abdominal IMRT. METHODS AND MATERIALS: Forty-two datasets of kV CBCT for 9 pediatric patients with abdominal neuroblastoma treated with IMRT were evaluated. Organs positions on planning CT scan were considered the reference position against which organs and target motions were evaluated. The position of the kidneys and the liver was assessed in all scans. The target movement was evaluated in four patients who were treated for gross residual disease. RESULTS: The mean age of the patients was 4.1±1.6years. The range of target movement in the craniocaudal direction (CC) was 5mm. In the CC direction, the range of movement was 10mm for the right kidney, and 8mm for the left kidney. Similarly, the liver upper edge range of motion was 11mm while the lower edge range of motion was 13mm. CONCLUSIONS: With the use of daily CBCT we may be able to reduce the PTV margin. If CBCT is not used daily, a wider margin is needed. |
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Authors:
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Mohamed Soliman Nazmy; Yasser Khafaga; Amr Mousa; Ehab Khalil |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-23 |
Journal Detail:
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Title: Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology Volume: - ISSN: 1879-0887 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8407192 Medline TA: Radiother Oncol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Radiation Oncology Section, Oncology Centre King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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