{
  "ptid_time": "009_S_1030_2007-05-16",
  "img_path": "/data/qiuhui/data/adni/images/009_S_1030/2007-05-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,370 mm³, 21.1% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume ; hippocampal volume measures 7,822 mm³, 2.6% below the reference mean. With a Z-score of -0.26 (39.9th percentile), this represents normal volume ; whole brain volume measures 1,163,080 mm³, 2.5% above the reference mean. With a Z-score of 0.36 (63.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,598 mm³, 7.9% above the reference mean. With a Z-score of 0.54 (70.7th percentile), this represents normal volume ; fusiform gyrus volume measures 14,940 mm³, 25.0% below the reference mean. With a Z-score of -2.07 (1.9th percentile), this represents significant atrophy; middle temporal gyrus volume measures 19,154 mm³, 14.5% below the reference mean. With a Z-score of -1.20 (11.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 67.9 years. Gender is Male. Education: 20 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The fusiform gyrus shows significant atrophy (Z-score -2.07, 1.9th percentile), and the middle temporal gyrus shows mild atrophy (Z-score -1.20, 11.6th percentile), which are concerning for neurodegenerative changes. However, hippocampal and whole brain volumes are within normal limits, and the MMSE score of 28 is intact.  \nDiagnosis: **MCI** (due to focal atrophy in temporo-occipital regions despite normal cognition)  \nConfidence: **Medium** (atypical atrophy pattern without clear cognitive deficits, but APOE4-negative status reduces Alzheimer's likelihood)",
  "timestamp": "2025-07-25T22:14:08.868435"
}