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. 2025 Apr;275(3):873-883.
doi: 10.1007/s00406-024-01857-1. Epub 2024 Jul 6.

Assessment of resting cerebral perfusion between methamphetamine-associated psychosis and schizophrenia through arterial spin labeling MRI

Zhen-An Hwang #  1   2 , Chia-Wei Li #  1   3 , Ai-Ling Hsu  4   5 , Changwei W Wu  6 , Wing P Chan #  7   8 , Ming-Chyi Huang #  9   10   11   12
Affiliations

Assessment of resting cerebral perfusion between methamphetamine-associated psychosis and schizophrenia through arterial spin labeling MRI

Zhen-An Hwang et al. Eur Arch Psychiatry Clin Neurosci. 2025 Apr.

Abstract

Objective: The clinical manifestations of methamphetamine (METH)-associated psychosis (MAP) and acute paranoid schizophrenia (SCZ) are similar. This study aims to assess regional cerebral blood flow (rCBF) in individuals who use METH and in those with SCZ using the MRI arterial spin labeling (ASL) technique.

Methods: We prospectively recruited 68 participants and divided them into four groups: MAP (N = 15), SCZ (N = 13), METH users with no psychosis (MNP; N = 22), and normal healthy controls (CRL; N = 18). We measured rCBF using an MRI three-dimensional pseudo-continuous ASL sequence. Clinical variables were assessed using the Positive and Negative Syndrome Scale (PANSS) and Brief Assessment of Cognition in Schizophrenia (BACS). Group-level rCBF differences were analyzed using a two-sample t-test.

Results: Decreased rCBF was found in the precuneus, premotor cortex, caudate nucleus, dorsolateral prefrontal cortex, and thalamus in the MNP group compared with the CRL group. The MAP group had significantly decreased rCBF in the precuneus, hippocampus, anterior insula, inferior temporal gyrus, inferior orbitofrontal gyrus, and superior occipital gyrus compared with the MNP group. Increased rCBF in the precuneus and premotor cortex was seen in the MAP group compared with the SCZ group. rCBF in the precuneus and premotor cortex significantly correlated negatively with the PANSS but correlated positively with BACS scores in the MAP and SCZ groups.

Conclusion: METH exposure was associated with decreased rCBF in the precuneus and premotor cortex. Patients with MAP exhibited higher rCBF than those with SCZ, implying preserved insight and favorable outcomes. rCBF can therefore potentially serve as a diagnostic approach to differentiate patients with MAP from those with SCZ.

Keywords: Blood flow; Brain; Magnetic resonance imaging (MRI); Methamphetamine; Schizophrenia.

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Conflict of interest statement

Declarations. Competing interests: Zhen-An Hwang, Ai-Ling Hsu, Changwei W. Wu, Wing P. Chan, and Ming-Chyi Huang declared no competing or potential conflicts of interest. One author, Chia-Wei Li, is an employee of GE Healthcare, Taiwan. No funding was received from GE Healthcare for publication activities.

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