{
  "ptid_time": "100_S_4556_2012-11-26",
  "img_path": "/data/qiuhui/data/adni/images/100_S_4556/2012-11-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,032 mm³, 16.8% below the reference mean. With a Z-score of -0.40 (34.3th percentile), this represents normal volume ; hippocampal volume measures 8,124 mm³, 7.5% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; whole brain volume measures 1,072,860 mm³, 0.6% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,381 mm³, 6.8% above the reference mean. With a Z-score of 0.46 (67.9th percentile), this represents normal volume ; fusiform gyrus volume measures 20,740 mm³, 10.1% above the reference mean. With a Z-score of 0.86 (80.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,345 mm³, 9.4% above the reference mean. With a Z-score of 0.85 (80.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Male. Education: 20 years. MMSE: 28.0. MoCA: 26.0. 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) are within normal ranges, with Z-scores close to or above the mean. Cognitive scores (MMSE 28, MoCA 26) are also within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:25:56.496404"
}