{
  "ptid_time": "126_S_0605_2018-07-10",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0605/2018-07-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 58,248 mm³, 57.6% above the reference mean. With a Z-score of 1.55 (94.0th percentile), this represents moderate enlargement; hippocampal volume measures 6,844 mm³, 5.4% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume ; whole brain volume measures 1,105,380 mm³, 19.1% above the reference mean. With a Z-score of 2.29 (98.9th percentile), this represents significant enlargement; entorhinal cortex volume measures 3,986 mm³, 15.1% above the reference mean. With a Z-score of 0.82 (79.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,699 mm³, 16.1% above the reference mean. With a Z-score of 1.21 (88.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 22,847 mm³, 26.7% above the reference mean. With a Z-score of 2.38 (99.1th percentile), this represents significant enlargement. ",
  "text_data": "Age is 87.6 years. Gender is Female. Education: 16 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 4.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows significant enlargement in whole brain and middle temporal gyrus, with moderate ventricular enlargement, but hippocampal and entorhinal cortex volumes are within normal ranges. Cognitive scores (MMSE 27, MoCA 24) are borderline for mild cognitive impairment (MCI), but the preserved hippocampal volume and lack of significant atrophy in Alzheimer’s-related regions suggest a less severe neurodegenerative process.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores suggest MCI, but the lack of hippocampal atrophy makes Alzheimer’s less likely; vascular or other etiologies could contribute.)",
  "timestamp": "2025-07-26T12:36:32.312553"
}