{
  "ptid_time": "098_S_4003_2014-04-15",
  "img_path": "/data/qiuhui/data/adni/images/098_S_4003/2014-04-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,626 mm³, 19.8% above the reference mean. With a Z-score of 0.45 (67.5th percentile), this represents normal volume ; hippocampal volume measures 7,836 mm³, 10.1% above the reference mean. With a Z-score of 0.93 (82.4th percentile), this represents normal volume ; whole brain volume measures 984,521 mm³, 1.0% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,458 mm³, 5.9% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; fusiform gyrus volume measures 17,548 mm³, 3.1% above the reference mean. With a Z-score of 0.29 (61.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,959 mm³, 9.3% above the reference mean. With a Z-score of 0.81 (79.1th percentile), this represents normal volume . ",
  "text_data": "Age is 75.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges relative to reference means and Z-scores. Cognitive assessments (MMSE 30, MoCA 28) are also within normal limits, and while APOE4 is present (a risk factor for Alzheimer’s), there is no current evidence of cognitive or structural decline.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:45:53.738803"
}