Salivary gland function in nasopharyngeal carcinoma before and late after intensity-modulated radiotherapy evaluated by dynamic diffusion-weighted MR imaging with gustatory stimulation

Table 3 Salivary flow rates and the changes of salivary flow rates of the salivary glands before and after RT

Parameters	PG	SMG / SLG	FG	F	P
SFRrest, pre(g/min)	0.26 ± 0.17	0.49 ± 0.30	0.76 ± 0.42	17.625	0.000
SFRrest, post(g/min)	0.07 ± 0.03^a	0.04 ± 0.05^b	0.12 ± 0.05^c	25.458	0.000
SFRstim, pre(g/min)	0.72 ± 0.49	1.11 ± 0.51	1.82 ± 0.56	47.114	0.000
SFRstim, post(g/min)	0.54 ± 0.75^d	0.19 ± 0.32^e	0.72 ± 0.55^f	16.053	0.000
SFRstim, IR, pre(%)	2.75 ± 2.34	3.93 ± 7.68	2.55 ± 3.08	0.670	0.514
SFRstim, IR, post(%)	7.30 ± 4.99^g	6.07 ± 12.07	6.63 ± 6.73^h	0.269	0.765
SFRrest, CRs (%)	−61.60 ± 32.13	−87.43 ± 14.00	−82.46 ± 8.82	12.019	0.000
SFRstim, CRs (%)	−17.82 ± 61.32ⁱ	−82.48 ± 16.84	−59.84 ± 26.22^j	20.483	0.000

SFR salivary flow rates, SFRrest,pre the rest salivary flow rates pre-RT, SFRrest,post the rest salivary flow rates post-RT, SFRstim,pre the stimulated salivary flow rates pre-RT, SFRstim,post the stimulated salivary flow rates post-RT, SFRstim,IR,pre the stimulated salivary flow rates IRs pre-RT, SFRstim,IR,post the stimulated salivary flow rates IRs post-RT, SFRrest,CRs the rest salivary flow rates CRs pre and post-RT, SFRstim,CRs the stimulated salivary flow rates CRs pre and post-RT. PG parotid glands, SMG / SLG submandibular glands and sublingual glands, FG full of three glands
Pa = 0.000; Pb = 0.000; Pc = 0.000; Pd = 0.023; Pe = 0.000; Pf = 0.000; Pg = 0.002; Ph = 0.007
Pi = 0.001; Pj = 0.001
Pa~j: salivary flow rates and the changes of salivary flow rates of the salivary glands before and after RT had statistical significance

ISSN: 1472-6831