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Table 1 Parameters of the applied MRI sequences

From: Comparison of diagnostic performance for pulmonary nodule detection between free-breathing spiral ultrashort echo time and free-breathing radial volumetric interpolated breath-hold examination

Parameters

Radial VIBE

Spiral UTE

TR (ms)

2.79

4.37

TE (ms)

1.39

0.05

Flip angle (º)

Fov (mm)

380

380

matrix

320 × 320

320 × 320

Acquired orientation

transversal

transversal

Slice thickness (mm)

1.2

3

Respiratory state

free breathing

free breathing

Acquisition time (s)

330s

480–540 s, depending on the patient’s breathing pattern

  1. MR, magnetic resonance imaging; VIBE, volumetric interpolated breath-hold examination; UTE, ultrashort echo time; TR, repetition time; TE, echo time