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TBI: Water-cells modular filter for Total Body Irradiation

contact: prof. Giulio Rosati
centre: UniPd - DIMEG
start: 2000
Topic: Medicals
Project: TBI


The water filter system was designed to improve dose homogeneity in Total Body Irradiation (TBI). The system is made up of a translating bed, a linear X-ray source, a vision system for body thickness assessment, a dynamically controlled water filter and a main control unit. The water filter, placed between the X-ray source and the patient, is made up of an array of 70 small water containers (cells). Water level in each cell is on-the-fly controlled, with the aim of modifying dose distribution in the transversal direction; moreover, dose delivery is modulated even in the longitudinal direction by translating the bed.


Publications

P. Gallina, G. Rosati, and A. Rossi
Implementation of a water compensator for total body irradiation
IEEE Transactions on Biomedical Engineering, 52(10):17411747, 2005.

G. Boschetti, P. Gallina, G. Rosati, A. Rossi, and V. Zanotto
Design of an innovative water filter for Total Body Irradiation
In Proceedings of IASTED Intenational Conference on Biomedical Engineering BioMED2003, pages 243-248, Salzburg, Austria, June 2003

M. Bisiacco, P. Gallina, G. Rosati, and A. Rossi
Development of a state-space water-level control for an array of cells to be employed as compensator in radiotherapy
Dynamics and Control, 10:399417, 2000

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