{
  "ptid_time": "100_S_0006_2007-05-22",
  "img_path": "/data/qiuhui/data/adni/images/100_S_0006/2007-05-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,170 mm³, 11.4% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; hippocampal volume measures 5,208 mm³, 19.8% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; whole brain volume measures 921,982 mm³, 0.7% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; entorhinal cortex volume measures 2,279 mm³, 34.2% below the reference mean. With a Z-score of -1.85 (3.2th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,849 mm³, 4.6% above the reference mean. With a Z-score of 0.34 (63.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,430 mm³, 3.3% below the reference mean. With a Z-score of -0.30 (38.4th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Female. Education: 13 years. MMSE: 24.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate atrophy in the hippocampus and entorhinal cortex, both key regions affected in Alzheimer's disease, while other brain volumes remain normal. The MMSE score of 24 suggests mild cognitive impairment, and the absence of APOE4 reduces but does not eliminate Alzheimer's risk.  \n**Diagnosis:** MCI (Mild Cognitive Impairment)  \n**Confidence:** Medium",
  "timestamp": "2025-07-26T11:13:53.023437"
}