{
  "ptid_time": "128_S_0200_2007-03-06",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0200/2007-03-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,209 mm³, 56.0% below the reference mean. With a Z-score of -1.33 (9.2th percentile), this represents mild atrophy; hippocampal volume measures 9,233 mm³, 15.0% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents moderate enlargement; whole brain volume measures 1,222,110 mm³, 7.7% above the reference mean. With a Z-score of 1.09 (86.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,358 mm³, 2.2% above the reference mean. With a Z-score of 0.15 (56.1th percentile), this represents normal volume ; fusiform gyrus volume measures 19,916 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,220 mm³, 0.9% below the reference mean. With a Z-score of -0.07 (47.2th percentile), this represents normal volume . ",
  "text_data": "Age is 62.4 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Pittsburgh compound B: 1.16 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal to above-average volumes in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus). The MMSE score of 28 is within the normal range, and the absence of APOE4 alleles reduces genetic risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:35:55.009153"
}