Arterial spin-labeling in central nervous system infection

Tomoyuki Noguchi, Yusuke Yakushiji, Masashi Nishihara, Osamu Togao, Koji Yamashita, Kazufumi Kikuchi, Muneaki Matsuo, Shinya Azama, Hiroyuki Irie

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Purpose: To investigate the characteristics of arterial spin-labeling magnetic resonance imaging (ASL-MRI) in central nervous system (CNS) infection. Methods: Thirty-two patients with CNS infections underwent a pulsed ASL-MRI. The findings on ASL-MRI were retrospectively assessed for the pathogens as well as each of the following four pathology classified based on conventional MRI findings: non-purulent parenchymal involvement, meningeal involvement, abscess formation, and ventricular involvement. Results: Among the 17 patients with non-purulent parenchymal involvement, ASL-MRI revealed high perfusion in 8 patients (47%) and low perfusion 1 patient (6%). Especially, four of five patients (80%) with definite or suspected herpes simplex virus (HSV) infection showed high perfusion on ASL-MRI. Seventeen of 22 patients (77%) with meningeal involvement showed high perfusion along the cerebral sulci irrespective of the pathogens. Meanwhile, 4 of 16 lesions (25%) with abscess formation showed low perfusion and one of six patients (17%) with ventricular involvement had high perfusion. Conclusions: The characteristics of ASL-MRI in CNS infections were clearly delineated. ASLMRI could be helpful for monitoring the brain function in CNS infections noninvasively.

Original languageEnglish
Pages (from-to)386-394
Number of pages9
JournalMagnetic Resonance in Medical Sciences
Issue number4
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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