{
  "ptid_time": "099_S_0040_2007-12-21",
  "img_path": "/data/qiuhui/data/adni/images/099_S_0040/2007-12-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,708 mm³, 13.5% above the reference mean. With a Z-score of 0.32 (62.7th percentile), this represents normal volume ; hippocampal volume measures 7,665 mm³, 1.4% above the reference mean. With a Z-score of 0.14 (55.4th percentile), this represents normal volume ; whole brain volume measures 977,600 mm³, 9.4% below the reference mean. With a Z-score of -1.22 (11.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,648 mm³, 11.0% below the reference mean. With a Z-score of -0.75 (22.7th percentile), this represents normal volume ; fusiform gyrus volume measures 18,745 mm³, 0.5% below the reference mean. With a Z-score of -0.04 (48.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,328 mm³, 18.8% below the reference mean. With a Z-score of -1.69 (4.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 75.2 years. Gender is Male. Education: 18 years. MMSE: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows mild to moderate atrophy in whole brain and middle temporal gyrus volumes, but hippocampal and entorhinal cortex volumes are within normal ranges. The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium",
  "timestamp": "2025-07-26T10:50:13.179218"
}