{
  "ptid_time": "052_S_1352_2015-04-10",
  "img_path": "/data/qiuhui/data/adni/images/052_S_1352/2015-04-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 48,237 mm³, 1.3% below the reference mean. With a Z-score of -0.12 (45.3th percentile), this represents normal volume ; hippocampal volume measures 6,838 mm³, 7.4% above the reference mean. With a Z-score of 0.80 (78.9th percentile), this represents normal volume ; whole brain volume measures 1,021,440 mm³, 2.0% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,715 mm³, 6.0% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; fusiform gyrus volume measures 18,305 mm³, 8.6% above the reference mean. With a Z-score of 0.99 (84.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,957 mm³, 4.7% below the reference mean. With a Z-score of -0.73 (23.3th percentile), this represents normal volume . ",
  "text_data": "Age is 93.9 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 24.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.97 SUVR (normal ); Total tau: 316.30 pg/mL (normal ); Phosphorylated tau: 25.95 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with only minor deviations (e.g., middle temporal gyrus slightly below mean but still normal). Cognitive scores (MMSE 30, MoCA 24) suggest intact global cognition with possible mild executive/attention deficits (MoCA <26). Biomarkers (T-tau, P-tau, AV45) are normal, and APOE4-negative status lowers Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (MoCA score slightly low for age but not indicative of MCI/dementia; normal biomarkers support CN)",
  "timestamp": "2025-07-26T07:48:20.973136"
}