{
  "ptid_time": "128_S_1148_2007-07-16",
  "img_path": "/data/qiuhui/data/adni/images/128_S_1148/2007-07-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,090 mm³, 64.2% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement; hippocampal volume measures 5,628 mm³, 20.9% below the reference mean. With a Z-score of -1.92 (2.8th percentile), this represents moderate atrophy; whole brain volume measures 967,436 mm³, 0.7% below the reference mean. With a Z-score of -0.09 (46.3th percentile), this represents normal volume ; entorhinal cortex volume measures 2,556 mm³, 30.4% below the reference mean. With a Z-score of -1.87 (3.1th percentile), this represents moderate atrophy; fusiform gyrus volume measures 15,016 mm³, 11.7% below the reference mean. With a Z-score of -1.07 (14.3th percentile), this represents mild atrophy; middle temporal gyrus volume measures 15,204 mm³, 20.7% below the reference mean. With a Z-score of -1.80 (3.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 70.2 years. Gender is Female. Education: 14 years. MMSE: 24.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, middle temporal gyrus) alongside mild ventricular enlargement, consistent with neurodegeneration. The MMSE score of 24 suggests cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T13:53:05.288710"
}