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British Journal of Radiology (2004) 77, 137-142
© 2004 British Institute of Radiology
doi: 10.1259/bjr/11764177
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Irradiation of the heart during tangential breast treatment: a study within the START trial

K Venables, MSc, MIPEM1, E A Miles, BSc, DCR(T)1, A Deighton, BSc, DCR(T)1, E G A Aird, PhD, FIPEM2 and P J Hoskin, FCRP, FRCR1 on behalf of the START trial management group

1 Marie Curie Research Wing and 2 Physics Department, Mount Vernon Hospital, Northwood, Middlesex HA6 2RN, UK



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  		Figure 1. Position of maximum heart slice.

 


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  		Figure 2. Maximum heart depth, measured from the 50% isodose to the maximum intrusion of the heart into the radiotherapy field.

 


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  		Figure 3. Area of heart irradiated to (a) 50% and (b) 90% of the prescribed dose.

 


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  		Figure 4. Dose–area histograms for patients in the START Cardiac study, calculated for the maximum heart slice. Each line represents the upper bound of the histogram for a single patient.

 


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  		Figure 5. Correlation between maximum lung depth and maximum heart depth.

 


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  		Figure 6. Area of heart irradiated at different centres. At centre D, a larger proportion of patients have greater than 2 cm in the heart than at the other centres.

 




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