{
  "ptid_time": "094_S_1267_2007-09-24",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1267/2007-09-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,602 mm³, 49.1% below the reference mean. With a Z-score of -1.18 (12.0th percentile), this represents mild atrophy; hippocampal volume measures 8,686 mm³, 14.9% above the reference mean. With a Z-score of 1.45 (92.7th percentile), this represents mild enlargement; whole brain volume measures 1,196,710 mm³, 10.9% above the reference mean. With a Z-score of 1.41 (92.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,026 mm³, 1.8% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,288 mm³, 2.9% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,977 mm³, 3.0% above the reference mean. With a Z-score of 0.27 (60.6th percentile), this represents normal volume . ",
  "text_data": "Age is 73.7 years. Gender is Male. Education: 16 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal to mildly enlarged volumes in key regions (hippocampus, whole brain). Cognitive testing (MMSE 28/30) is within normal limits, and there is no genetic risk (APOE4 negative). No significant atrophy is seen in Alzheimer’s-associated regions (entorhinal cortex, fusiform gyrus).  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:20:27.307888"
}