T2*-based MR imaging of hyperglycemia-induced hemichorea-hemiballism

Fang Yu, Andrew Steven, Lee A Birnbaum, Wilson Altmeyer

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Introduction Hyperglycemia can induce hemichorea-hemiballism, especially in elderly type II diabetics. CT and MRI findings include hyperdensity and T1-shortening in the contralateral lentiform nucleus, respectively. This study explores the associated imaging findings on T2*-based sequences. Methods Six patients with clinically documented hyperglycemia-induced hemichorea-hemiballism who had undergone MR imaging with a T2*-based sequence (T2* gradient echo or susceptibility-weighted imaging) were included in this retrospective case series. Results All six patients demonstrated T1-shortening contralateral to their hemichorea-hemiballism. T2*-based sequences demonstrated unilateral hypointense signal within the striatum in four patients. One patient had mild bilateral striatal hyperintensities, while another did not show significant signal changes. Conclusion It is important for the radiologist to be aware of the signal changes that can be seen on T2*-based sequences in hyperglycemia-induced hemochorea-hemiballism.

Original languageEnglish (US)
Pages (from-to)24-30
Number of pages7
JournalJournal of Neuroradiology
Issue number1
StatePublished - Feb 1 2017


  • Brain
  • MRI
  • Nonketotic hyperglycemia
  • SWI
  • T2*

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology


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