{
  "ptid_time": "094_S_2201_2015-02-03",
  "img_path": "/data/qiuhui/data/adni/images/094_S_2201/2015-02-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,342 mm³, 40.3% above the reference mean. With a Z-score of 1.01 (84.3th percentile), this represents mild enlargement; hippocampal volume measures 7,319 mm³, 4.8% below the reference mean. With a Z-score of -0.53 (29.7th percentile), this represents normal volume ; whole brain volume measures 1,002,550 mm³, 2.6% below the reference mean. With a Z-score of -0.32 (37.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,441 mm³, 11.6% below the reference mean. With a Z-score of -0.90 (18.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,236 mm³, 0.1% above the reference mean. With a Z-score of 0.02 (50.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,582 mm³, 4.6% below the reference mean. With a Z-score of -0.41 (34.2th percentile), this represents normal volume . ",
  "text_data": "Age is 67.7 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild ventricular enlargement but otherwise normal brain volumes, including the hippocampus and entorhinal cortex. Cognitive scores (MMSE, MoCA) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T10:25:30.195021"
}