{
  "ptid_time": "082_S_4090_2013-08-05",
  "img_path": "/data/qiuhui/data/adni/images/082_S_4090/2013-08-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,756 mm³, 27.9% below the reference mean. With a Z-score of -0.67 (25.2th percentile), this represents normal volume ; hippocampal volume measures 7,715 mm³, 2.1% above the reference mean. With a Z-score of 0.20 (58.0th percentile), this represents normal volume ; whole brain volume measures 1,069,120 mm³, 1.0% below the reference mean. With a Z-score of -0.12 (45.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,759 mm³, 8.3% below the reference mean. With a Z-score of -0.56 (28.6th percentile), this represents normal volume ; fusiform gyrus volume measures 19,213 mm³, 2.0% above the reference mean. With a Z-score of 0.17 (56.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,167 mm³, 0.8% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.4 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.08 SUVR (normal ); Total tau: 214.00 pg/mL (normal ); Phosphorylated tau: 19.00 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges based on Z-scores and percentiles. Cognitive screening (MMSE 30, MoCA 28) is intact, and biomarkers (T-tau, P-tau, AV45) are normal. No evidence of neurodegeneration or cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T10:05:09.597222"
}