What type of study is this?

This is a Quantitative Study study (also classified as: Experimental Study).

September 17, 2025

Parallel Detection of Lactate-Edited 1H MRSI and DMI to Differentiate Total and Active Lactate Pools in Brain Tumors

Key Points

The interleaved 1H MRSI-DMI technique enables robust detection of lactate in brain tumors.
This approach successfully distinguishes between static and dynamic metabolic changes in tumor biology.
Results show key variations of metabolites, enhancing understanding of tumor metabolism.
The study findings may improve clinical MRI diagnosis and therapeutic strategies for brain tumors.

Abstract

Motivation: Detecting both static and dynamic metabolism through ¹H MRSI and DMI can provide valuable insights into tumor biology. However, reliable detection of lactate (Lac) in tumors using ¹H MRSI is often compromised by lipid contamination. Goal(s): Develop an interleaved edited ¹H MRSI-DMI sequence that allows parallel acquisition of both 1H MRSI and DMI, and robustly detect 1H-Lac in the presence of lipids, to provide insights into tumor metabolism. Approach: Seven 2H-scans could be acquired in parallel with every 1H MRS scan as validated in vitro and demonstrated in vivo. Results: The combined 1H MRSI-DMI successfully revealed key tumor-associated static(tCho,NAA,Lac) and dynamic(2H-Glx,2H-Lac) metabolic changes. Impact: The interleaved edited 1H MRSI and DMI offers an opportunity to study and compare the static and active metabolism in parallel with robust 1H-Lac detection providing novel and complementary insights to the wide range of clinical MRI scans.

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