Correction to: Retrospective dosimetry study of intensity-modulated radiation therapy for nasopharyngeal carcinoma: measurement-guided dose reconstruction and analysis.

The original version of this article [1] unfortunately contained a mistake.

Correction

The original version of this article [1] unfortunately contained a mistake. The presentation of Table 4 was incorrect. The corrected table is given below and the original article was corrected.

Table 4

Pearson correlation coefficient with three type gamma pass rate and DV, VD

Structure	DVH index	Planar 2D GP(%)			Global 3D GP(%)			Organ specific 3D GP(%)
		3 mm/3%	2 mm/2%	1 mm/1%	3 mm/3%	2 mm/2%	1 mm/1%	3 mm/3%	2 mm/2%	1 mm/1%
PTVnx	V100%	−0.038	− 0.106	− 0.252	0.044	− 0.145	− 0.238	− 0.328	− 0.405	− 0.267
	D98%	− 0.143	− 0.099	− 0.217	0.010	− 0.244	− 0.391	− 0.358	− 0.425	− 0.291
	D2%	−0.336	− 0.332	− 0.460	− 0.336	− 0.398	−0.409	− 0.754	− 0.810 *	− 0.811 *
	Dmean	− 0.386	− 0.409	− 0.585	− 0.248	− 0.442	− 0.567	− 0.836 *	− 0.968 *	− 0.935 *
PTV1	V100%	−0.035	− 0.217	− 0.210	− 0.174	− 0.232	− 0.258	− 0.166	−0.189	0.056
	D95%	0.131	0.065	−0.110	0.162	−0.124	− 0.362	− 0.135	− 0.409	− 0.431
PTV2	V100%	0.046	0.152	0.118	−0.057	− 0.164	− 0.151	− 0.072	− 0.102	−0.006
	D95%	−0.168	−0.253	− 0.225	− 0.563	− 0.58	− 0.467	− 0.525	−0.458	− 0.376
SC	D1cc	−0.185	−0.157	− 0.216	− 0.309	− 0.478	− 0.443	− 0.595	− 0.664	− 0.650
BS	V60 Gy	− 0.147	− 0.260	− 0.118	− 0.111	− 0.376	− 0.421	− 0.140	− 0.384	− 0.474
Parotid-L	Dmean	0.160	0.079	0.004	0.118	0.042	− 0.050	− 0.007	− 0.173	− 0.385
	V30 Gy	0.297	0.096	− 0.115	0.158	0.017	−0.122	0.065	−0.377	− 0.403
Parotid-R	Dmean	−0.056	− 0.022	− 0.049	0.091	− 0.034	− 0.151	0.007	− 0.126	− 0.489
	V30 Gy	− 0.064	0.056	− 0.057	0.093	− 0.085	− 0.207	− 0.057	− 0.147	−0.42
TL-L	D1cc	0.043	0.146	0.139	0.151	0.132	0.087	0.068	−0.096	−0.271
TL-R	D1cc	0.055	0.162	0.196	0.058	0.035	0.050	0.370	−0.164	−0.241
Larynx	Dmean	−0.225	−0.288	− 0.243	−0.315	− 0.366	−0.363	0.079	−0.349	− 0.666

The two-tailed Student t-test with SPSS statistical software (V19);

Bold letters in the data highlighted R > 0.8 and * symbolled the significance of the correlation at the 0.01 level (P < 0.01, bilateral);

Abbreviations: D volumetric dose, V dose volumes, PTV planning target volume, GP (%) gamma pass rate (%), SC spinal cord, BS brainstem, Parotid-L left parotid gland, Parotid-R right parotid gland, TL-L left temporal lobe, TL-R right temporal lobe