Table 5.

Evaluation of normal lung ${\mathrm{V}}_5$, dose to 1000 cc of total normal lung tissue and dose to $<0.35\hspace{0.17em}\text{cc}$ of spinal cord in SBRT lung plans calculated by iPlan XVMC algorithm. First 5 patients had dose delivery schema of total 54 Gy in 3 fractions, and remaining 15 patients with 50 Gy in 5 fractions.

Patient No.	PTV Vol. (cc)	Normal Lung ${\mathrm{V}}_5$ a (%)	Dose to 1000 cc of Total Lung (Gy)	Dose to $<0.35\hspace{0.17em}\text{cc}$ of Spinal Cord (Gy)
1	11.1	13.3	1.1	3.0
2	20.1	10.4	1.7	3.5
3	27.1	13.6	2.9	5.6
4	50.9	36.1	2.3	12.6
5	68.1	23.1	2.8	9.0
6	12.9	6.6	1.1	2.6
7	15.0	5.9	0.7	5.2
8	20.1	4.4	0.7	8.1
9	21.0	11.4	1.5	5.4
10	26.3	16.8	2.5	16.4
11	31.2	13.8	1.3	4.0
12	36.2	10.8	2.6	3.9
13	37.1	24.3	4.3	12.8
14	39.7	21.0	1.5	11.7
15	39.8	7.4	6.5	10.4
16	53.4	23.1	3.3	7.6
17	56.5	18.3	1.9	6.1
18	61.5	28.6	3.5	7.9
19	132.0	20.3	3.1	5.5
20	163.0	35.0	3.9	18.3
AVG	46.1	17.2	2.4	8.0
STDEV	38.7	9.2	1.4	4.5

^aNormal lung ${\mathrm{V}}_5$ values ranged from 4.4% to 35% ($\text{mean}=17.2\%\pm 9.2\%$).

Note: No minor deviation from RTOG 0915 dosimetric criteria was observed for spinal cord dose and total dose to 1000 cc of normal lung. For all patients, the dose to $<5\hspace{0.17em}\text{cc}$ of esophagus and dose to $<15\hspace{0.17em}\text{cc}$ of heart were all well below the RTOG requirement, therefore, we did not include those parameters in this table. RTOG minor deviation criteria for dose to $<0.35\hspace{0.17em}\text{cc}$ of spinal cord $>20.8\hspace{0.17em}\text{Gy}$, dose to 1000 cc of total normal lung tissue $>12.8\hspace{0.17em}\text{Gy}$, dose to $<5\hspace{0.17em}\text{cc}$ of esophagus $>18.8\hspace{0.17em}\text{Gy}$, and dose to $<15\hspace{0.17em}\text{cc}$ of heart $>28\hspace{0.17em}\text{Gy}$.

PTV = planning target volume; ${\mathrm{V}}_5=\text{percentage of total}$ normal lung minus ITV receiving dose equals to 5 Gy or more; AVG = average; STDEV = standard deviation.