Kesesuaian Derajat Stenosis Foramina Intervertebral Lumbalis Antara Potongan Axial dan Potongan Sagital Pada Magnetic Resonance Imaging (MRI) Vertebra Lumbal Pasien Degenerasi Vertebra Lumbalis = Compatibility the Degree of Lumbar Intervertebral Foramina Stenosis Between Axial and Sagittal Planes in Magnetic Resonance Imaging (MRI) of Lumbar Vertebrae in Patients with Lumbar Vertebra Degeneration