{
  "ptid_time": "137_S_4482_2012-09-14",
  "img_path": "/data/qiuhui/data/adni/images/137_S_4482/2012-09-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,304 mm³, 41.9% below the reference mean. With a Z-score of -0.96 (16.9th percentile), this represents normal volume ; hippocampal volume measures 7,217 mm³, 1.4% above the reference mean. With a Z-score of 0.13 (55.3th percentile), this represents normal volume ; whole brain volume measures 933,104 mm³, 4.3% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume ; entorhinal cortex volume measures 2,980 mm³, 18.9% below the reference mean. With a Z-score of -1.16 (12.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 17,127 mm³, 0.7% above the reference mean. With a Z-score of 0.06 (52.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,133 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.3th percentile), this represents normal volume . ",
  "text_data": "Age is 77.7 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with only mild atrophy noted in the entorhinal cortex. Cognitive test scores (MMSE and MoCA) are high, indicating no significant cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T16:33:10.704850"
}