Table 1.

The mean TLD‐measured dose (${\mathrm{D}}_{\text{meas}}$) and mean TPS‐calculated dose (${\mathrm{D}}_{\text{calc}}$) for various organs of interest associated with each of the three IMRT cases.

Case	Organ of Interest	Mean Distance from Field Edge (cm) b	Mean $D_{meas}\left(cGy/G{y}_{Rx}\right)$	Mean $D_{calc}\left(cGy/G{y}_{Rx}\right)$	$D_{meas}/D_{calc}$
	Spinal cord (1) a	1.6	10.52	12.00	1.14
	Eye lens (2)	3.6	10.59	7.61	0.68
	Thyroid (2)	6.9	0.88	0.58	0.67
	Breast buds (2)	15.5	0.29	0.19	0.65
Pediatric Brain	Lungs (4)	18.3	0.27	0.14	0.48
	Heart (5)	20.1	0.20	0.01	0.05
	Ovaries (1)	39.0	0.06	0	0
	Heart (3)	2.3	30.67	31.09	1.01
Lunt	Contralateral lung (8)	6.3	5.87	5.12	0.86
	Thyroid (2)	7.3	1.56	0.91	0.59
	Ovaries (2)	33.8	0.12	0.03	0.27
	Contralateral breast (2)	3.8	2.85	2.46	0.80
	Heart (2)	4.6	2.79	1.98	0.70
Breast	Ipsilateral lung (3)	6.1	2.35	1.42	0.58
	Thyroid (2)	7.4	0.66	0.69	1.04
	Contralateral lung (2)	13.2	0.94	0.48	0.52
	Ovaries (2)	39.1	0.07	0.01	0.10

^a The number of measurement points for each specific organ at risk is denoted in parenthesis.

^b The mean distance from the field edge was measured from the 50% isodose line.