{
  "ptid_time": "082_S_2099_2011-04-06",
  "img_path": "/data/qiuhui/data/adni/images/082_S_2099/2011-04-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,746 mm³, 8.7% below the reference mean. With a Z-score of -0.24 (40.7th percentile), this represents normal volume ; hippocampal volume measures 6,309 mm³, 2.9% below the reference mean. With a Z-score of -0.23 (40.9th percentile), this represents normal volume ; whole brain volume measures 886,861 mm³, 4.5% below the reference mean. With a Z-score of -0.53 (29.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,664 mm³, 5.8% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; fusiform gyrus volume measures 14,417 mm³, 10.5% below the reference mean. With a Z-score of -0.79 (21.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,436 mm³, 8.8% below the reference mean. With a Z-score of -0.79 (21.6th percentile), this represents normal volume . ",
  "text_data": "Age is 84.2 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 29, MoCA 25) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:02:39.392864"
}