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Egyptian Journal of Radiology and Nuclear Medicine

Table 3 Comparison between mean ADC before and during treatment

From: Diffusion-weighted magnetic resonance imaging (DWMRI) of head and neck squamous cell carcinoma: could it be an imaging biomarker for prediction of response to chemoradiation therapy

 

ADCpre

ADCmid

P

Total (n = 29)

   

Min.–Max.

0.7–1.4

0.9–1.9

< 0.001

Mean ± SD

1 ± 0.2

1.3 ± 0.2

Median (IQR)

1.0 (0.9–1)

1.3(1.1–1.4)

Local control (n = 15)

   

Min.–Max.

0.7–1.2

0.9–1.9

0.001

Mean ± SD

0.9 ± 0.1

1.3 ± 0.3

Median (IQR)

0.9(0.8–1)

1.3(1–1.1)

Local failure (n = 14)

   

Min.–Max.

0.8–1.4

1–1.6

0.002

Mean ± SD

1 ± 0.2

1.2 ± 0.2

Median (IQR)

1(1.1–1.4)

1.2(1.1–1.4)

  1. P P value for comparing between pretreatment and midtreatment mean ADC using Wilcoxon signed-ranks test
  2. Statistically significant at p ≤ 0.05
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