{
  "ptid_time": "153_S_6336_2019-05-21",
  "img_path": "/data/qiuhui/data/adni/images/153_S_6336/2019-05-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,441 mm³, 28.6% above the reference mean. With a Z-score of 0.83 (79.7th percentile), this represents normal volume ; hippocampal volume measures 7,242 mm³, 3.9% above the reference mean. With a Z-score of 0.34 (63.3th percentile), this represents normal volume ; whole brain volume measures 1,089,360 mm³, 5.8% above the reference mean. With a Z-score of 0.77 (77.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,258 mm³, 7.3% above the reference mean. With a Z-score of 0.48 (68.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,794 mm³, 1.5% below the reference mean. With a Z-score of -0.13 (44.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,211 mm³, 15.1% above the reference mean. With a Z-score of 1.35 (91.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 83.6 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 23.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volumes (hippocampus, entorhinal cortex, fusiform gyrus, etc.) are within normal ranges or slightly above, with no significant atrophy. The MMSE score is normal (30/30), but the MoCA score (23/30) suggests mild cognitive impairment (MCI). The absence of APOE4 reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** **MCI** (due to MoCA score despite normal imaging)  \n**Confidence:** **Medium** (imaging does not support neurodegeneration, but MoCA indicates cognitive decline)",
  "timestamp": "2025-07-26T17:16:47.049479"
}