Imaging for early stage breast cancer

Multi-catheter interstitial brachytherapy

Planning Target coverage is ≥90% of the prescribed dose covering ≥90% of PTV-Eval Skin dose should not exceed prescription dose 2 parameters important 1) The volume of tissue receiving higher doses • V150 and V200 should be limited to ≤70 cc and ≤20 cc, resp. 2) Dose homogeneity index • DHI is the volume ratio, i.e. 1-(V150/V100). DHI will be ≥0.75 In addition, <60% of the breast should receive ≥50% dose

Tang et al, J Contemp Brachyther 2014