Table 2:

Average estimated diffusion coefficients derived from monoexponential fitting and diffusional kurtosis analysis in patients with squamous cell carcinoma head and neck cancer (n = 17)

Region (n)	ADCmono	Dapp	Kapp	ρ (Dappand Kapp)
Node (28)	0.84 ± 0.24	1.54 ± 0.45	1.38 ± 0.37	−0.49 ± 0.35
BOT primary (6)	0.67 ± 0.22	1.32 ± 0.35	1.69 ± 0.54	−0.52 ± 0.42
Tonsil primary (7)	0.78 ± 0.20	1.46 ± 0.41	2.91 ± 3.92	−0.54 ± 0.27
NPC primary (2)	1.16 ± 0.19	2.21 ± 0.05	0.92 ± 0.17	−0.21 ± 0.34
Spine (12)	0.74 ± 0.08	1.44 ± 0.29	1.41 ± 0.15	−0.26 ± 0.42

Note:—n indicates number of regions (over all squamous cell carcinoma patients) contributing to the average; ADC_mono, apparent diffusion coefficient obtained from monoexponential fitting (10⁻³ mm²/s); D_app, apparent diffusion coefficient obtained from diffusional kurtosis analysis (10⁻³ mm²/s); K_app, apparent kurtosis coefficient obtained from diffusional kurtosis analysis (dimensionless); ρ (D_appand K_app), Spearman rank-order correlation coefficient for correlation between K_app and D_app. Averages are presented as mean ± SD