{
  "ptid_time": "098_S_0172_2012-03-25",
  "img_path": "/data/qiuhui/data/adni/images/098_S_0172/2012-03-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,112 mm³, 31.9% below the reference mean. With a Z-score of -0.73 (23.2th percentile), this represents normal volume ; hippocampal volume measures 7,590 mm³, 6.7% above the reference mean. With a Z-score of 0.61 (73.0th percentile), this represents normal volume ; whole brain volume measures 922,500 mm³, 5.4% below the reference mean. With a Z-score of -0.67 (25.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,750 mm³, 2.1% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; fusiform gyrus volume measures 15,803 mm³, 7.1% below the reference mean. With a Z-score of -0.65 (25.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,756 mm³, 7.4% below the reference mean. With a Z-score of -0.64 (26.1th percentile), this represents normal volume . ",
  "text_data": "Age is 76.6 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "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 based on Z-scores and percentiles. Cognitive screening scores (MMSE = 29, MoCA = 24) are within normal limits for age, with no significant impairment. The absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:39:23.833308"
}