{
  "ptid_time": "021_S_5194_2018-08-02",
  "img_path": "/data/qiuhui/data/adni/images/021_S_5194/2018-08-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,394 mm³, 30.9% below the reference mean. With a Z-score of -0.71 (24.0th percentile), this represents normal volume ; hippocampal volume measures 7,384 mm³, 3.8% above the reference mean. With a Z-score of 0.35 (63.6th percentile), this represents normal volume ; whole brain volume measures 980,973 mm³, 0.6% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume ; entorhinal cortex volume measures 4,216 mm³, 14.8% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,069 mm³, 5.5% below the reference mean. With a Z-score of -0.51 (30.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,629 mm³, 2.8% below the reference mean. With a Z-score of -0.24 (40.3th percentile), this represents normal volume . ",
  "text_data": "Age is 70.2 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "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 and MoCA) are both at the maximum (30/30), indicating no cognitive impairment. The absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:54:59.349815"
}