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Table 3 Comparison of diaphragm motion of dynamic MRI between IPF patients and control group

From: Evaluation of respiratory muscle dysfunction in patients with idiopathic pulmonary fibrosis: a prospective observational study with magnetic resonance imaging

Ratios

Quiet breathing

Deep breathing

Controls

IPF

P

Controls

IPF

P

The coronal plane

 Left CC

1.08 (1.07, 1.10)

1.08 (1.06, 1.11)

0.905

1.34 (1.24, 1.48)

1.20 (1.15, 1.30)

<0.001*

 Right CC

1.09 (1.07, 1.12)

1.10 (1.07, 1.12)

0.505

1.42 (1.29, 1.55)

1.28 (1.17, 1.36)

<0.001*

 Area

1.15 (1.12, 1.18)

1.18 (1.13, 1.27)

0.057

1.76 (1.55, 2.02)

1.56 (1.41, 1.73)

<0.002*

The right sagittal plane

 AND

1.04 (1.02,1.06)

1.04 (1.02, 1.06)

0.297

1.11 (1.08, 1.23)

1.10 (1.05, 1.16)

0.062

 APD

1.08 (1.06,1.10)

1.09 (1.06, 1.10)

0.946

1.30 (1.21, 1.42)

1.20 (1.13, 1.26)

<0.001*

 POD

1.08 (1.07, 1.11)

1.09 (1.07, 1.11)

0.831

1.32 (1.21, 1.38)

1.23 (1.16, 1.29)

<0.001*

 Area

1.12 (1.09, 1.16)

1.12 (1.10, 1.15)

0.932

1.60 (1.36, 1.73)

1.38 (1.25, 1.50)

<0.001*

DH

0.97 (0.92, 1.02)

0.96 (0.92, 1.00)

0.798

0.81 (0.78, 0.97)

0.96 (0.88, 1.02)

<0.001*

DA

0.98 (0.96, 1.02)

0.98 (0.96,1.02)

0.228

0.90 (0.76, 1.02)

1.00 (0.89, 1.11)

<0.001*

  1. Note: *p < 0.05.IPF, idiopathic pulmonary fibrosis; CC, the cranial-caudal distance; DH, the height of diaphragm; DA, the area of diaphragm; AND, APD, POD, the distance between the lung apex and anterior Diaphragm, Diaphragm apex, and posterior Diaphragm on sagittal plane, respectively