{
  "ptid_time": "033_S_0513_2007-05-31",
  "img_path": "/data/qiuhui/data/adni/images/033_S_0513/2007-05-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,650 mm³, 68.7% above the reference mean. With a Z-score of 1.63 (94.9th percentile), this represents moderate enlargement; hippocampal volume measures 7,214 mm³, 10.1% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; whole brain volume measures 1,091,530 mm³, 3.8% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,700 mm³, 13.2% below the reference mean. With a Z-score of -0.91 (18.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,164 mm³, 13.8% below the reference mean. With a Z-score of -1.15 (12.6th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,331 mm³, 13.7% below the reference mean. With a Z-score of -1.13 (12.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 69.9 years. Gender is Male. Education: 18 years. MMSE: 29.0. Logical Memory: 14.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement and mild hippocampal atrophy, along with mild atrophy in the fusiform gyrus and middle temporal gyrus—regions critical for memory and cognition. However, the MMSE score of 29 is within the normal range, suggesting preserved cognitive function despite structural changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Structural changes are concerning, but cognitive performance remains intact, making early MCI more likely than dementia.)",
  "timestamp": "2025-07-26T05:10:46.255974"
}