{
  "ptid_time": "099_S_4076_2012-06-18",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4076/2012-06-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,956 mm³, 13.9% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume ; hippocampal volume measures 7,030 mm³, 1.2% below the reference mean. With a Z-score of -0.11 (45.7th percentile), this represents normal volume ; whole brain volume measures 984,757 mm³, 1.0% above the reference mean. With a Z-score of 0.13 (55.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,586 mm³, 2.4% below the reference mean. With a Z-score of -0.15 (44.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,176 mm³, 12.7% above the reference mean. With a Z-score of 1.16 (87.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 17,317 mm³, 9.7% below the reference mean. With a Z-score of -0.84 (20.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.6 years. Gender is Female. Education: 20 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are all within normal ranges or show only mild deviations (e.g., mild enlargement in fusiform gyrus). Cognitive scores (MMSE 28, MoCA 26) are within normal limits for age, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:04:40.848216"
}