{
  "ptid_time": "128_S_0740_2007-02-07",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0740/2007-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,851 mm³, 21.6% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume ; hippocampal volume measures 5,779 mm³, 23.5% below the reference mean. With a Z-score of -2.30 (1.1th percentile), this represents significant atrophy; whole brain volume measures 1,026,150 mm³, 4.9% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,063 mm³, 25.3% below the reference mean. With a Z-score of -1.72 (4.3th percentile), this represents moderate atrophy; fusiform gyrus volume measures 14,344 mm³, 23.9% below the reference mean. With a Z-score of -2.03 (2.1th percentile), this represents significant atrophy; middle temporal gyrus volume measures 15,402 mm³, 27.8% below the reference mean. With a Z-score of -2.50 (0.6th percentile), this represents significant atrophy. ",
  "text_data": "Age is 72.7 years. Gender is Male. Education: 15 years. MMSE: 25.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in the hippocampus, fusiform gyrus, and middle temporal gyrus, along with moderate atrophy in the entorhinal cortex—key regions affected in Alzheimer's disease. The MMSE score of 25 is borderline, but the structural changes strongly suggest neurodegeneration.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T13:49:21.034263"
}