{
  "ptid_time": "127_S_2234_2018-01-17",
  "img_path": "/data/qiuhui/data/adni/images/127_S_2234/2018-01-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,464 mm³, 26.4% above the reference mean. With a Z-score of 0.60 (72.7th percentile), this represents normal volume ; hippocampal volume measures 7,030 mm³, 1.2% below the reference mean. With a Z-score of -0.11 (45.7th percentile), this represents normal volume ; whole brain volume measures 913,256 mm³, 6.3% below the reference mean. With a Z-score of -0.79 (21.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,709 mm³, 1.0% above the reference mean. With a Z-score of 0.06 (52.4th percentile), this represents normal volume ; fusiform gyrus volume measures 16,345 mm³, 3.9% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,516 mm³, 12.2% above the reference mean. With a Z-score of 1.06 (85.6th percentile), this represents mild enlargement. ",
  "text_data": "Age is 70.6 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, with only mild enlargement in the middle temporal gyrus. Cognitive scores (MMSE 30, MoCA 27) are normal, and there is no significant amyloid burden (AV45: mild reduced). APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:12:49.603624"
}