Table 2.

A comparison of doses to the heart and ipsilateral lung dosimetry from the MammoSite catheter and external beam radiotherapy using the radiobiologically adjusted dosimetric parameters.

MammoSite (34 Gy/10#/1 week)		External Beam (50 Gy/25#/5 weeks)		p-value
Mean	Range	Mean	Range
Lung
V23.5 7 cc	0–20.4 cc	V30 86.7 cc	31.5–184 cc	p = 0.05*
V23.5 0.7%	0–1.5%	V30 8.3%	2.3–19.9%	p = 0.03*
V16.5 23.6 cc	0–57.9 cc	V20 105 cc	46.1–205 cc	p = 0.06
V16.5 2.3%	0–4.2%	V20 10%	3.3–22.2%	p = 0.03*
V9 98.1 cc	0–201.7 cc	V10 133.6 cc	67.8–235 cc	p = 0.48
V9 9.4%	0–13.3%	V10 12.8%	4.9–25.4%	p = 0.26
Heart
V16.5 1.2 cc	0–5.2 cc	V20 15.7 cc	0–23.9 cc	p = 0.009*
V16.5 0.3%	0–1.2%	V20 3.7%	0–5.3%	p = 0.01*
V9 15.9 cc	2.1–47.4 cc	V10 22.9 cc	0.3–39.0 cc	p = 0.34
V9 3.7%	0.5–10.5%	V10 5.4%	0.1–8.7%	p = 0.35
V4.5 105.7 cc	64.5–173.5 cc	V5 41.47 cc	3.1–82.3 cc	p = 0.001*
V4.5 25.0%	15.1–38.5%	V5 9.6%	0.8–18.3%	p = 0.002*

* represents a statistically significant p-value