Keywords:
Trauma, Athletic injuries, Diagnostic procedure, Comparative studies, MR, CT, Conventional radiography, Musculoskeletal spine
Authors:
E. Ayaz1, A. Aktan2, G. Alioğlu3; 1Ankara/TR, 2Istanbul/TR, 3TUNCELİ/TR
DOI:
10.26044/ecr2019/C-0718
Methods and materials
A total of 982 lumbar radiographs performed in Bingol State Hospital between the dates of January to April 2018 were searched retrospectively.
Fifty-six patients who had MR and CT at the same week of radiographs were included.
Five patients who had lumber trauma or surgery between the imaging,
5 patients with the surgical materials and 6 patients with the low quality images were excluded.
Three radiologists evaluated the radiographs,
CT and MR of the remaining 40 patients between the ages of 17 and 64 independently according to spondylolisthesis and the degree of spondylolysis.
Each imaging evaluated by the radiologists one week apart and blinded to identity of the patients. Each observers noted that if there was pars interarticularis defect unilateral (sides were indicated) or bilateral or not.
Furthermore,
they graded the degree of spondylolysthesis according to Meyer Classification2 as follows;
Grade 0 |
No spondylolisthesis |
Grade 1 |
Slippage of the vertebra less than 25% relative to the one below |
Grade 2 |
Slippage of the vertebra 25% to 50% relative to the one below |
Grade 3 |
Slippage of the vertebra 50% to 75% relative to the one below |
Grade 4 |
Slippage of the vertebra 75% to 100% relative to |
Grade 5 |
Complete Slippage (> 100%) |
All of the patients in the study had lateral lumbar radiograph performed with Digital Single Detector Ceiling Mounted HF Radiographic System (US X-RAY,
Bolu-Turkey),
Sagittal reformatted CT images with 1.5 mm slice thickness from axial 0.625 mm lumber axial images performed with the 16 row multislice CT scanner Alexion (Canon Medical Systems Corporation,
Japan) and MRI images with Magnetom Avanto 1.5 Tesla (Siemens Healthineers Headquarters,
Erlangen,
Germany).
Our routine lumbar MRI protocol consist of sagital T1 weighted,
sagital T2 weighted and axial T2 weighted images.