{
  "ptid_time": "033_S_1016_2007-06-05",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1016/2007-06-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,721 mm³, 47.6% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; hippocampal volume measures 7,966 mm³, 12.0% above the reference mean. With a Z-score of 1.10 (86.4th percentile), this represents mild enlargement; whole brain volume measures 1,081,290 mm³, 10.9% above the reference mean. With a Z-score of 1.38 (91.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,334 mm³, 18.0% above the reference mean. With a Z-score of 1.10 (86.5th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,780 mm³, 1.4% below the reference mean. With a Z-score of -0.12 (45.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,707 mm³, 8.0% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume . ",
  "text_data": "Age is 78.8 years. Gender is Female. Education: 13 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal-to-above-normal volumes in key regions (hippocampus, whole brain, entorhinal cortex). The MMSE score of 27 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant cognitive impairment is evident.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:26:09.277279"
}