{
  "ptid_time": "011_S_4120_2012-01-25",
  "img_path": "/data/qiuhui/data/adni/images/011_S_4120/2012-01-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,911 mm³, 2.8% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume ; hippocampal volume measures 7,185 mm³, 10.6% above the reference mean. With a Z-score of 0.85 (80.3th percentile), this represents normal volume ; whole brain volume measures 968,124 mm³, 4.3% above the reference mean. With a Z-score of 0.52 (69.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,485 mm³, 0.6% above the reference mean. With a Z-score of 0.03 (51.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,192 mm³, 12.9% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,580 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.2th percentile), this represents normal volume . ",
  "text_data": "Age is 82.3 years. Gender is Female. Education: 17 years. MMSE: 30.0. MoCA: 25.0. 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) are within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE = 30, MoCA = 25) are within normal limits for age, with no indication of significant impairment. The absence of APOE4 further reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:54:31.882853"
}