Article Figures & Data
Figures
- Fig 1.
Patient with left arm weakness and a right frontal lobe AVM overlapping the SMA region. Axial functional MR image illustrates activation of the left SMA (arrow) and right sensorimotor cortex during a left finger-tapping task.
- Fig 2.
23-year-old female patient with a right frontal lobe tumor contiguous with the SMA region, who showed preoperative left upper extremity numbness, left pronator drift, and gait disturbance. Axial functional MR images illustrate bilateral SMA activation during a left finger-tapping task.
- Fig 3.
35-year-old male patient with a right frontal lobe tumor noncontiguous with the SMA region and no preoperative neurologic deficit. Axial functional MR image illustrates bilateral SMA activation during a left finger-tapping task
- Fig 4.
A and B, Axial functional MR images show activation in sensorimotor cortex and SMA for left finger (A) and right finger (B) motor tasks in a healthy volunteer. All control subjects demonstrated left SMA dominance for the right finger task; 43% of the control subjects showed right SMA dominance for the left finger task.
- Fig 5.
Axial functional MR images show activation from right motor tasks in the two patients with left frontal masses overlapping the SMA in whom reorganization of SMA was detected.
A, Activation in the SMA (red arrows) is contralateral to the sensorimotor cortex activation (black arrows) in a patient with a large meningioma.
B, In a patient with a grade II oligodendroglioma, activation secondary to the right finger task is noted in the right SMA (red arrow) and in the left sensorimotor cortex (black arrow)
- Fig 6.
A–C, Axial functional MR images show activation from left motor tasks in three patients with right frontal AVM (A) or tumor (B and C) contiguous with the SMA. Activation in the SMA was identified in the left hemisphere in each case.
