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Table 3 Linear regressions for the difference before and after SBRT adjusted for the type of imaging method and spinal lesion

From: Response assessment after stereotactic body radiation therapy for spine and non-spine bone metastases: results from a single institutional study

 

ΔSBRT = (After – Before SBRT)

Δ Width

Δ Depth

Δ Height

Δ Volume

Δ CT-DN

Δ T2-SI

Δ T2-TSI

Δ T1-NSI

Δ T1-CESI

Imaging

         

CT

11.82 (3.11)

p < 0.001*

5.73 (2.39)

p = 0.017*

7.27 (2.90)

p = 0.012*

28,347.15 (12,743.88)

p = 0.026*

− 25.71 (85.02)

p = 0.762

MRI

3.87 (2.76)

(p = 0.162)

1.14 (2.13)

p = 0.592

4.34 (2.58)

p = 0.092

20,438.88 (11,487.83)

p = 0.075

PET/CT

Ref

Ref

Ref

Ref

Ref

Spine

         

Yes

4.89 (2.27)

p = 0.031*

0.93 (1.74)

p = 0.593

− 0.20 (2.11)

p = 0.926

12,841.73 (9358.37)

(p = 0.170)

− 40.56 (80.99)

p = 0.617

19.16 (60.67)

(p = 0.752)

− 124.38 (71.00)

p = 0.080

88.54 (51.23)

p = 0.084

112.05 (66.88)

p = 0.094

No

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Ref

Ref

  1. p < 0.1 is considered as significant
  2. SBRT, stereotactic body radiotherapy; CT-DN, computed tomography density native in Hounsfield units; T2-SI, T2-weighted images signal intensity; T2-TSI, T2-weighted images turbo inversion recovery magnitude signal intensity; T1-NSI, T1-weighted images native signal intensity; T1-CESI, T1-weighted images contrast enhanced signal intensity; CT, computed tomography; MRI, magnetic resonance imaging; PET/CT, positron emission tomography/ computed tomography; Ref, reference
  3. *Statistically significant; p < 0.10; results presented as unstandardized effect sizes β, standard errors (SE), and p-values