Article Figures & Data
Figures
- Fig 1.
Sample images from a routine rMRI examination. Axial single-shot T2 fast-field echo echo-planar (A), axial single-shot diffusion-weighted (B), axial single-shot FLAIR (C), axial T2 fast-field echo (T2*) (D), coronal T2 TSE (E), and axial T2 TSE (F) images.
- Fig 2.
An 8-year-old child who fell from a bike. Initial noncontrast head CT shows a left epidural hemorrhage (A). Follow-up rMRI axial T2 TSE shows interval-increased size of the left epidural hemorrhage (B). Follow-up rMRI axial T2 TSE shows interval craniotomy and evacuation of the left epidural hemorrhage (C).
- Fig 3.
A 16-year-old pedestrian struck by an automobile. Negative noncontrast CT of the head (A), axial single-shot FLAIR (B), and coronal T2 TSE (C) demonstrate a small left temporal lobe contusion.
- Fig 4.
Axial noncontrast head CT (A) demonstrates a right frontal bone fracture. On the same patient, a right frontal extra-axial hemorrhage with fracture is present on the axial T2 TSE (B) and coronal T2 TSE (C). Axial noncontrast head CT (D) shows an occipital fracture with a corresponding fracture seen on the axial T2 TSE sequence (E). Axial noncontrast head CT (F) shows the right occipital fracture. The fracture was not identified prospectively on rMRI; however, it can be identified retrospectively on rMRI (G) when read in conjunction with the initial head CT.
- Fig 5.
A 15-year-old adolescent involved in an all-terrain vehicle rollover. Axial noncontrast head CT images (A–D) demonstrate no abnormal finding. The axial single-shot FLAIR images (E–H) demonstrate multiple foci of abnormal signal in the frontal white matter and genu of the corpus callosum, compatible with diffuse axonal injury.
Tables
Positive Scan Findings CT Total Negative Positive rMRI Negative 22 10 32 Positive 1 68 69 Total 23 78 101 ↵a κ measure of agreement, 0.728; P < .001; standard error, 0.075; overall percentage agreement, 92%; positive percentage agreement, 91%; negative percentage agreement, 94%.
Extra-Axial Hemorrhage CT Total Negative Positive rMRI Negative 44 5 49 Positive 3 49 52 Total 47 54 101 ↵a κ measure of agreement, 0.841; P <0 .001; standard error, 0.054; overall percentage agreement, 92%; positive percentage agreement, 91%; negative percentage agreement, 94%.
Contusion CT Total Negative Positive rMRI Negative 74 1 75 Positive 12 14 26 Total 86 15 101 ↵a κ measure of agreement, 0.609; P < .001; standard error, 0.095; overall percentage agreement, 87%; positive percentage agreement, 93%; negative percentage agreement, 86%.
Diffuse Axonal Injury CT Total Negative Positive rMRI Negative 91 1 92 Positive 8 1 9 Total 99 2 101 ↵a κ measure of agreement, 0.154; P = .039; standard error, 0.153; overall percentage agreement, 91%; positive percentage agreement, 50%; negative percentage agreement, 92%.
Skull Fracture CT Total Negative Positive rMRI Negative 44 12 56 Positive 3 42 45 Total 47 54 101 ↵a κ measure of agreement, 0.705; P < .001; standard error, 0.069; overall percentage agreement, 85%; positive percentage agreement, 78%; negative percentage agreement, 94%.
