{
  "ptid_time": "099_S_4202_2012-04-09",
  "img_path": "/data/qiuhui/data/adni/images/099_S_4202/2012-04-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,392 mm³, 8.1% below the reference mean. With a Z-score of -0.19 (42.3th percentile), this represents normal volume ; whole brain volume measures 1,144,100 mm³, 6.0% above the reference mean. With a Z-score of 0.78 (78.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,896 mm³, 5.0% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; fusiform gyrus volume measures 20,190 mm³, 7.2% above the reference mean. With a Z-score of 0.61 (72.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,860 mm³, 2.4% above the reference mean. With a Z-score of 0.22 (58.7th percentile), this represents normal volume . ",
  "text_data": "Age is 71.0 years. Gender is Male. Education: 18 years. MMSE: 28.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 28, MoCA 25) are also within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:06:59.997871"
}