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Prior to introducing intensity modulated radiotherapy (IMRT) for whole breast radiotherapy (WBRT) into our department we undertook a comparison of the dose parameters of several IMRT techniques and standard wedged tangents (SWT). Our aim was to improve the dose distribution to the breast and to decrease the dose to organs at risk (OAR): heart, lung and contralateral breast (Contra Br). Treatment plans for 20 women (10 rightsided and 10 leftsided) previously treated with SWT for WBRT were used to compare (a) SWT; (b) electronic compensators IMRT (EIMRT); (c) tangential beam IMRT (TIMRT); (d) coplanar multifield IMRT (CPIMRT); and (e) noncoplanar multifield IMRT (NCPIMRT). Plans for the breast were compared for (i) dose homogeneity (DH); (ii) conformity index (CI); (iii) mean dose; (iv) maximum dose; (v) minimum dose; and dose to OAR were calculated (vi) heart; (vii) lung and (viii …