{
  "ptid_time": "130_S_4415_2012-08-01",
  "img_path": "/data/qiuhui/data/adni/images/130_S_4415/2012-08-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,117 mm³, 64.0% below the reference mean. With a Z-score of -1.46 (7.2th percentile), this represents mild atrophy; hippocampal volume measures 5,954 mm³, 16.3% below the reference mean. With a Z-score of -1.50 (6.7th percentile), this represents mild atrophy; whole brain volume measures 930,107 mm³, 4.6% below the reference mean. With a Z-score of -0.58 (28.3th percentile), this represents normal volume ; entorhinal cortex volume measures 2,565 mm³, 30.2% below the reference mean. With a Z-score of -1.85 (3.2th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,642 mm³, 2.2% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,842 mm³, 12.1% below the reference mean. With a Z-score of -1.05 (14.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 75.6 years. Gender is Female. Education: 13 years. MMSE: 25.0. MoCA: 21.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild to moderate atrophy in key Alzheimer's-related regions (hippocampus, entorhinal cortex, middle temporal gyrus), alongside normal whole brain and fusiform gyrus volumes. The cognitive scores (MMSE 25, MoCA 21) suggest mild cognitive impairment, and the presence of two APOE4 alleles increases Alzheimer's risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores align with MCI, but clinical correlation with functional decline would strengthen certainty.)",
  "timestamp": "2025-07-26T14:43:42.844293"
}