{
  "ptid_time": "033_S_6298_2019-05-15",
  "img_path": "/data/qiuhui/data/adni/images/033_S_6298/2019-05-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,986 mm³, 50.2% below the reference mean. With a Z-score of -1.15 (12.5th percentile), this represents mild atrophy; hippocampal volume measures 7,208 mm³, 1.3% above the reference mean. With a Z-score of 0.12 (54.8th percentile), this represents normal volume ; whole brain volume measures 989,817 mm³, 1.6% above the reference mean. With a Z-score of 0.20 (57.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,536 mm³, 3.7% below the reference mean. With a Z-score of -0.23 (41.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,664 mm³, 2.1% below the reference mean. With a Z-score of -0.19 (42.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,456 mm³, 3.7% below the reference mean. With a Z-score of -0.32 (37.3th percentile), this represents normal volume . ",
  "text_data": "Age is 70.5 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive testing (MMSE 30, MoCA 26) is within normal limits, and the patient is APOE4-negative, suggesting no significant Alzheimer's risk markers.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:40:07.594694"
}