{
  "ptid_time": "941_S_4292_2016-07-22",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4292/2016-07-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,395 mm³, 18.5% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume ; hippocampal volume measures 7,450 mm³, 1.4% below the reference mean. With a Z-score of -0.14 (44.4th percentile), this represents normal volume ; whole brain volume measures 1,018,440 mm³, 5.6% below the reference mean. With a Z-score of -0.73 (23.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,867 mm³, 5.7% below the reference mean. With a Z-score of -0.39 (35.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,973 mm³, 9.9% below the reference mean. With a Z-score of -0.84 (19.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,610 mm³, 8.1% below the reference mean. With a Z-score of -0.73 (23.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.9 years. Gender is Male. Education: 15 years. MMSE: 29.0. MoCA: 28.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.09 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 29, MoCA 28) are also within normal limits, and there is no evidence of amyloid pathology (AV45 normal). APOE4 status is negative, further reducing Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T17:37:51.492373"
}