{
  "ptid_time": "037_S_0377_2014-02-14",
  "img_path": "/data/qiuhui/data/adni/images/037_S_0377/2014-02-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 40,386 mm³, 14.1% below the reference mean. With a Z-score of -0.41 (34.1th percentile), this represents normal volume ; hippocampal volume measures 6,517 mm³, 6.5% below the reference mean. With a Z-score of -0.56 (28.8th percentile), this represents normal volume ; whole brain volume measures 1,089,930 mm³, 5.9% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,697 mm³, 18.3% above the reference mean. With a Z-score of 1.20 (88.5th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,838 mm³, 6.8% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,968 mm³, 6.0% below the reference mean. With a Z-score of -0.53 (29.6th percentile), this represents normal volume . ",
  "text_data": "Age is 87.3 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild deviations (e.g., entorhinal cortex shows mild enlargement, but no significant atrophy). Cognitive testing (MMSE 30, MoCA 25) suggests intact global cognition with possible mild executive/attention deficits (common in aging). APOE4 carrier status increases Alzheimer’s risk but does not confirm pathology without clinical or biomarker evidence.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to normal volumes and high MMSE, but MoCA slightly below typical cutoff for normality in some populations)",
  "timestamp": "2025-07-26T06:27:37.449287"
}