{
  "ptid_time": "067_S_0110_2006-01-25",
  "img_path": "/data/qiuhui/data/adni/images/067_S_0110/2006-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 64,639 mm³, 74.9% above the reference mean. With a Z-score of 2.02 (97.8th percentile), this represents significant enlargement; hippocampal volume measures 4,363 mm³, 32.8% below the reference mean. With a Z-score of -2.63 (0.4th percentile), this represents significant atrophy; whole brain volume measures 1,027,700 mm³, 10.7% above the reference mean. With a Z-score of 1.29 (90.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,051 mm³, 11.9% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,877 mm³, 4.8% above the reference mean. With a Z-score of 0.36 (64.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,892 mm³, 6.3% below the reference mean. With a Z-score of -0.56 (28.7th percentile), this represents normal volume . ",
  "text_data": "Age is 82.6 years. Gender is Female. Education: 10 years. Handedness: Right. Race: White. Medical history: Allergies or Drug Sensitivities. MMSE: 23.0. Logical Memory: 0.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant hippocampal atrophy (Z-score -2.63, 0.4th percentile) and ventricular enlargement (Z-score 2.02, 97.8th percentile), both strong indicators of neurodegeneration. The MMSE score of 23 suggests cognitive impairment, but not severe enough for dementia.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **High**  \n\n(Key findings: Hippocampal atrophy is a hallmark of Alzheimer's pathology, and ventricular enlargement supports neurodegeneration. The MMSE aligns with MCI rather than dementia or normal cognition.)",
  "timestamp": "2025-07-26T08:25:52.988757"
}