Clinical MRI Variables by Acquisition Time for Glymphatic Function Study

447 patient brain MRI scans from a retrospective study investigating glymphatic system function. The dataset contains regional ΔT1 measurements from pre- and post-contrast T1 mapping, categorized by daytime (n=307) or nighttime (n=140) acquisition and patient age. It was authored by Dongjun Lee and last updated on 2026-04 09.

Use Cases

• Modeling the relationship between MRI acquisition time and cortical gadolinium retention based on daytime/nighttime categorization.
• Analyzing the independent effect of patient age on cortical enhancement across scan times.
• Comparing regional glymphatic activity in cerebral cortex, white matter, and perivascular spaces using ΔT1 values.
• Evaluating early-phase T1 mapping as a biomarker for human glymphatic function.

Strengths

• Contains data from 447 patients, providing a substantial clinical sample.
• Includes a clear temporal split with 307 daytime and 140 nighttime scans.
• Measures were taken a median of 5.9 minutes after contrast injection, standardizing the early-phase window.
• Released under a permissive CC-BY-4.0 license for reuse.

Limitations

• Row count and specific column definitions are unknown, requiring inspection after download.
• The dataset is very small at 5.5 KB, indicating limited scope or highly summarized data.
• As a retrospective study, data may reflect biases inherent to the source clinical population.

Provenance

Source

figshare, author Dongjun Lee.

Collection Method

Retrospective analysis of clinical brain MRI scans from patients with suspected movement disorders.

Time Range

The study period is not specified, but data reflects scans categorized by time of day.

Freshness

Last updated 2026-04-09 17:36:19.

Geography

Geographic coverage is not specified.