Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation.

Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation. Research Abstract Details 

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Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation. Abstract Text:

Sue S Yom,Erik K Frija,Anita Mahajan,Eric Chang,Kelli Klein,Almon Shiu,Jared Ohrt,Shiao Woo,Sue S Yom,Erik K Frija,Anita Mahajan,Eric Chang,Kelli Klein,Almon Shiu,Jared Ohrt,Shiao Woo,

PURPOSE: To plan craniospinal irradiation with "field-in-field" (FIF) homogenization in combination with daily, intrafractional modulation of the field junctions, to minimize the possibility of spinal cord overdose. METHODS AND MATERIALS: Lateral cranial fields and posterior spinal fields were planned using a forward-planned, step-and-shoot FIF technique. Field junctions were automatically modulated and custom-weighted for maximal homogeneity within each treatment fraction. Dose-volume histogram analyses and film dosimetry were used to assess results. RESULTS: Plan inhomogeneity improved with FIF. Planning with daily modulated junction shifts provided consistent dose delivery during each fraction of treatment across the junctions. Modulation minimized the impact of a 5-mm setup error at the junction. Film dosimetry confirmed that no point in the junction exceeded the anticipated dose. CONCLUSIONS: Field-in-field planning and modulated junction shifts improve the homogeneity and consistency of daily dose delivery, simplify treatment, and reduce the impact of setup errors.

Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation. Publishing Authors By Initials

SS Yom,EK Frija,A Mahajan,E Chang,K Klein,A Shiu,J Ohrt,S Woo,SS Yom,EK Frija,A Mahajan,E Chang,K Klein,A Shiu,J Ohrt,S Woo,

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Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: International journal of radiation oncology, biolo

VOLUME: 69

Page Numbers: 1193-8

Journal Abbreviation: Int. J. Radiat. Oncol. Biol. P

ISSN: 0360-3016

DAY: 15

MONTH: Nov

YEAR: 2007

Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation. Information

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LANGUAGE: eng

NlmUniqueID: 7603616

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Grant and Affiliation Information for Field-in-field technique with intrafractionally modulated junction shifts for craniospinal irradiation.

AFFILIATION: Division of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA.

Country: United States

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MEDLINETA: Int J Radiat Oncol Biol Phys

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