{
  "ptid_time": "094_S_0711_2007-02-13",
  "img_path": "/data/qiuhui/data/adni/images/094_S_0711/2007-02-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,745 mm³, 15.0% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; hippocampal volume measures 6,888 mm³, 8.9% below the reference mean. With a Z-score of -0.87 (19.3th percentile), this represents normal volume ; whole brain volume measures 965,606 mm³, 10.5% below the reference mean. With a Z-score of -1.37 (8.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,666 mm³, 13.8% above the reference mean. With a Z-score of 0.94 (82.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,701 mm³, 0.7% below the reference mean. With a Z-score of -0.06 (47.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,483 mm³, 8.7% below the reference mean. With a Z-score of -0.78 (21.7th percentile), this represents normal volume . ",
  "text_data": "Age is 77.8 years. Gender is Male. Education: 18 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild whole brain atrophy (8.6th percentile), but other regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) 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": "2025-07-26T10:13:25.960914"
}