{
  "ptid_time": "123_S_4780_2012-12-20",
  "img_path": "/data/qiuhui/data/adni/images/123_S_4780/2012-12-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,988 mm³, 3.3% above the reference mean. With a Z-score of 0.08 (53.0th percentile), this represents normal volume ; hippocampal volume measures 7,295 mm³, 2.5% above the reference mean. With a Z-score of 0.23 (59.2th percentile), this represents normal volume ; whole brain volume measures 989,921 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 3,878 mm³, 5.6% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,765 mm³, 4.4% above the reference mean. With a Z-score of 0.40 (65.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,050 mm³, 4.6% above the reference mean. With a Z-score of 0.40 (65.5th percentile), this represents normal volume . ",
  "text_data": "Age is 70.7 years. Gender is Female. Education: 16 years. MMSE: 28.0. MoCA: 29.0. 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 slightly above the mean. Cognitive screening scores (MMSE 28, MoCA 29) are also within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:33:33.253016"
}