Keywords:
Education and training, Equipment, Diagnostic procedure, MR, Neuroradiology spine
Authors:
H. Sasani1, M. Vural2, M. SASANI2; 1TEKİRDAG/TR, 2Istanbul/TR
DOI:
10.26044/ecr2019/C-0019
Results
A total of 188 disc levels of were assessed from 103 patients.
The distribution of a total 188 disc levels of L4-L5,
L4-L5/L5-S1 and L5-S1 are 34,
35 and 34 respectively (Table 3).
The sampling number of disc levels were selected randomly and close to each other with minimum standard deviation. The number of patients with a reduction in DSCA of more than 15 mm2 (during loading) are shown in Table 2,
for each age group (Table 4,5).
Load-induced reductions in DSCA of more than 15 mm2 were more common in older age groups (Table 4).
In evaluation of the DSCA,
a significant decrease in the DSCA between routine supine and axial-loaded MRI was most commonly observed at the L4-5 levels (Table 5).
In the L4-5 levels,
relative stenosis of the spinal canal was observed in 12 levels without the axial load and was observed in an additional 5 levels with the axial-load.
Absolute stenosis was identified in 7 levels without the axial load and in an additional one level with axial loading.
In the L5-S1 level,
relative stenosis of the spinal canal was observed in 16 levels without the axial load and in an additional 8 levels with axial-load.
Absolute stenosis was identified in 6 levels without the axial load and in no other levels with the load.
The mean DSCA of the disc levels without and with axial-load were 138 mm2 and 123 mm2 at L4-5 and 134 mm2 and 125 mm2 at L5-S1,
respectively (Table 5).
In the control group,
6 disc levels were demonstrated.
Measurement of the DSCA without and with axial loading showed very limited changes in the DSCA with axial loading.
The mean decrease in the DSCA was 2,2 mm2 (range 1,2 to 4,1) (Table 2).