Article Figures & Data
Figures
- Fig 1.
Axial MR images in a 40-year-old male patient with a right frontal low-grade astrocytoma. Unenhanced axial T1-weighted spin-echo (A and C) and 3D MPRAGE MR images (B and D) of the first (A and B) and fifth (2 years later, C and D) gadolinium-enhanced MR imaging examinations at the level of the dentate nuclei of the cerebellum. The images show progressively increased T1 signal of the dentate nuclei (white arrows, C and D). Note that the qualitative analysis was slightly different between the 2 sequences.
- Fig 2.
Bland-Altman plots show the differences in average ROI measurements between the 2 readers for the dentate nucleus (A) and middle cerebellar peduncle (B).
- Fig 3.
Intraindividual linear graphic representation of the DN/MCP ratios, with error bars, for spin-echo and 3D MPRAGE sequences. Note the higher ratios with SE on both baseline and final examinations.
- Fig 4.
Intraindividual linear graphic representation demonstrating the correlation between qualitative and quantitative (DN/MCP ratio) evaluations of the increased T1 signal intensity within the dentate nucleus for SE and 3D MPRAGE sequences. Note the stronger correlation with MPRAGE (0.9) compared with SE (0.63). Values on the y-axis are represented on an ordinal scale with random vertical offset (jitter) to minimize overlapping.
Tables
Patients' demographic and clinical characteristics
Demographics Patients (number) 18 Sex 12 Women Age (mean ± SD) (range) (yrs) 52.56 ± 15.21 (17–76) eMRIs performed (mean ± SD) (range) 4.78 ± 2.51 (2–10) Interval (MRIbaseline − MRIx) (mean ± SD) (range) 933 ± 610.78 (96–1905 days) Diagnosis (number) Meningioma 12 Glioblastoma 2 Low-grade glioma 1 Oligodendroglioma 1 Chordoma 1 Spinal hemangioblastoma 1 Note:—eMRI indicates enhanced MR imaging; yrs, years.
