{
  "ptid_time": "126_S_5214_2018-07-12",
  "img_path": "/data/qiuhui/data/adni/images/126_S_5214/2018-07-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,831 mm³, 13.4% above the reference mean. With a Z-score of 0.31 (62.1th percentile), this represents normal volume ; hippocampal volume measures 7,163 mm³, 0.7% above the reference mean. With a Z-score of 0.06 (52.5th percentile), this represents normal volume ; whole brain volume measures 1,018,270 mm³, 4.5% above the reference mean. With a Z-score of 0.56 (71.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,572 mm³, 2.7% below the reference mean. With a Z-score of -0.17 (43.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,027 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,393 mm³, 6.4% above the reference mean. With a Z-score of 0.55 (71.0th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "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 assessments (MMSE 30, MoCA 29) are also normal, and there is no evidence of amyloid pathology (AV45 normal). APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:52:58.657261"
}