Article Figures & Data
Figures
- Fig 1.
Scatterplots show the positive linear relationships between median spinal level (ML) and total number of spinal levels (NL) of radiation therapy planned by using reference MR imaging protocol 4 compared with the more limited MR imaging protocols 1, 2, and 3. The Pearson correlation coefficient, r, and intraclass correlation (ICC) are both indicated for each comparison.
Tables
Patient No./Age (y)/Sex Primary Neoplasm Other Metastatic Disease 1/58/F Breast No 2/52/F Chronic myelogenous leukemia No (after stem cell transplant) 3/76/F Breast No 4/70/F Lung Brain 5/62/M Colon Liver, omentum 6/75/M Melanoma No 7/70/F Merkel cell, lip Liver 8/56/M Non-Hodgkin lymphoma Brain, cranial nerve 9/65/F Multiple myeloma 10/59/F Breast Axillary nodes 11/60/F Breast Liver, brain 12/31/F Breast Brain 13/28/F Breast No 14/49/F Breast Lung, brachial plexus 15/65/M Melanoma Liver, neck 16/42/M Melanoma Questionable adrenal 17/71/M Prostate No 18/69/F Lung Brain 19/62/M Pancreas Liver, rib 20/33/M Non-Hodgkin lymphoma Cranial nerves 21/50/F Breast No 22/52/M Floor of mouth No 23/54/F Breast No 24/64/M Lung Mediastinum 25/56/M Multiple myeloma 26/85/M Prostate Liver, retroperitoneum 27/68/F Lung Brain 28/46/F Non-Hodgkin lymphoma Kidney 29/71/M Multiple myeloma 30/80/F Lung Brain 31/64/M Ureter Mediastinum - Table 2:
Association of radiation therapy being planned with other factors (logistic regression model)
Factor P Value* MRI protocol type 0.873 Neuroradiologist 0.761 MRI protocol type × neuroradiologist 0.724 * Note:—* indicates that P values are from the logistic regression model.
- Table 3:
Comparing frequencies of radiation therapy planned among MRI protocol types (logistic regression model)
MRI Protocol Frequency % (SE) 1 45 (7) 2 46 (6) 3 49 (7) 4 49 (7) - Table 4:
Agreement in plan for radiation therapy between the reference MRI protocol type and the other MRI protocols
MRI Protocol Types κ (SE) 1 vs 4 0.76 (0.05) 2 vs 4 0.73 (0.05) 3 vs 4 0.76 (0.05) Effect ML NL MRI protocol type 0.780 0.686 Neuroradiologist 0.126 0.877 MRI protocol type × neuroradiologist 0.525 0.992 Note:—ML indicates median spinal level; NL, total number of spinal levels.
Values are P values are from mixed models.
- Table 6:
Summary of median levels (ML) and total number of levels (NL) of recommended spinal radiation by MRI protocol type
MRI Protocol Type ML NL 1 17.10 (0.97) 7.63 (1.05) 2 17.18 (0.96) 8.71 (1.02) 3 17.58 (0.97) 8.75 (1.04) 4 17.04 (0.96) 8.74 (1.00) Note:—Values are presented as mean (SE). Differences in means of ML and NL were not statistically significant at pairwise comparisons of any 2 protocol types.
