3.0 t skyra

All participants were scanned using the German Siemens 3.0 T Skyra magnetic resonance scanner (eight-channel, head coil). Children were instructed to sleep during image acquisition, followed by routine MRI sequence scans to exclude intracranial organic lesions. The specific parameters were as follows: T2 weighted imaging (T2WI) axis images: repetition time (TR) = 2230 ms, echo time (TE) = 108 ms, matrix = 256 × 256, field of view (FOV) = 240 mm × 240 mm, and slice thickness = 4 mm. T1 weighted imaging (T1WI) axis images: TR = 800 ms, TE = 15 ms, slice thickness = 4 mm, FOV = 240 mm × 240 mm. T2-fluid attenuated inversion recovery (FLAIR): TR = 8000 ms, TE = 102 ms, slice thickness = 4 mm, matrix = 256 × 256, inversion time = 2369 ms, and FOV = 240 mm × 240 mm. The three-dimensional T1-weighted sagittal images were acquired using magnetization-prepared rapid gradient echo: TR = 2300 ms, TE = 2.33 ms, slice thickness = 1 mm, and FOV = 240 mm × 240 mm, scanning time: 4 min 12 s.

All methods were carried out in accordance with the Declaration of Helsinki.
The magnetic resonance data were obtained from a 35-year-old male (body weight 60 kg, height 172 cm) who had received partial medial meniscectomy (PMM) using an MRI scanner (SIEMENS 3.0 T Skyra, Germany). During the scan, the subject was in a lying position, and 3D proton density-weighted imaging sequence was selected. A dual-source 128-slice CT equipment (SIEMENS Definition Flash CT, Germany) was used for computed tomography scan of the same subject. The lower extremities were scanned in a neutral posture with a slice distance of 0.625 mm and a field of view of 500 mm.