{
  "ptid_time": "029_S_4652_2013-06-05",
  "img_path": "/data/qiuhui/data/adni/images/029_S_4652/2013-06-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,628 mm³, 22.1% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume ; hippocampal volume measures 6,331 mm³, 9.1% below the reference mean. With a Z-score of -0.79 (21.5th percentile), this represents normal volume ; whole brain volume measures 1,020,810 mm³, 0.8% below the reference mean. With a Z-score of -0.11 (45.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,183 mm³, 5.4% above the reference mean. With a Z-score of 0.35 (63.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,119 mm³, 5.8% above the reference mean. With a Z-score of 0.50 (69.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,258 mm³, 14.4% below the reference mean. With a Z-score of -1.29 (9.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 80.3 years. Gender is Male. Education: 20 years. MMSE: 27.0. MoCA: 25.0. Logical Memory: 2.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges except for mild atrophy in the middle temporal gyrus. Cognitive scores (MMSE 27, MoCA 25) are borderline but still within normal limits for age. No APOE4 risk allele is present.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Mild atrophy in the middle temporal gyrus could suggest early changes, but cognitive performance remains intact.)",
  "timestamp": "2025-07-26T04:31:35.516682"
}