{
  "ptid_time": "941_S_5193_2015-04-02",
  "img_path": "/data/qiuhui/data/adni/images/941_S_5193/2015-04-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,173 mm³, 10.3% below the reference mean. With a Z-score of -0.24 (40.7th percentile), this represents normal volume ; hippocampal volume measures 6,497 mm³, 8.7% below the reference mean. With a Z-score of -0.80 (21.3th percentile), this represents normal volume ; whole brain volume measures 1,002,460 mm³, 2.9% above the reference mean. With a Z-score of 0.36 (64.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,725 mm³, 1.4% above the reference mean. With a Z-score of 0.09 (53.5th percentile), this represents normal volume ; fusiform gyrus volume measures 15,618 mm³, 8.2% below the reference mean. With a Z-score of -0.75 (22.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,355 mm³, 9.5% below the reference mean. With a Z-score of -0.82 (20.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.5 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ); Amyloid beta: 982.50 pg/mL (normal ); Total tau: 148.90 pg/mL (mild reduced); Phosphorylated tau: 12.43 pg/mL (mild reduced). ",
  "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 testing (MMSE 30, MoCA 27) is intact, and biomarkers (Aβ normal, T-tau/P-tau mildly reduced, AV45 normal) do not suggest Alzheimer's pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T17:43:54.912168"
}