When is MRI indicated in the evaluation of patients with suspected Parkinson disease (PD)?

Updated: Jan 24, 2019
  • Author: Robert A Hauser, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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Answer

Magnetic resonance imaging (MRI) is useful to exclude strokes, tumors, multi-infarct state, hydrocephalus, and the lesions of Wilson disease. MRI should be obtained in patients whose clinical presentation does not allow a high degree of diagnostic certainty, including those who lack tremor, have an acute or stepwise progression, or are younger than 55 years.

The following MRI indicates where a thalamic stimulator is typically placed.

Axial, fast spin-echo inversion recovery magnetic Axial, fast spin-echo inversion recovery magnetic resonance image at the level of the posterior commissure. The typical target for placing a thalamic stimulator is demonstrated (cross-hairs).

Below is a coronal MRI following bilateral subthalamic nuclei deep brain stimulation.

Postoperative coronal magnetic resonance image (MR Postoperative coronal magnetic resonance image (MRI) demonstrating desired placement of bilateral subthalamic nuclei-deep brain stimulation (STN-DBS) leads.

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