{
  "ptid_time": "003_S_4119_2013-07-31",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4119/2013-07-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,532 mm³, 15.9% below the reference mean. With a Z-score of -0.46 (32.2th percentile), this represents normal volume ; hippocampal volume measures 7,301 mm³, 4.8% above the reference mean. With a Z-score of 0.41 (66.0th percentile), this represents normal volume ; whole brain volume measures 1,121,530 mm³, 9.0% above the reference mean. With a Z-score of 1.18 (88.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,145 mm³, 4.4% above the reference mean. With a Z-score of 0.29 (61.4th percentile), this represents normal volume ; fusiform gyrus volume measures 22,127 mm³, 22.5% above the reference mean. With a Z-score of 1.95 (97.4th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 21,738 mm³, 7.8% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume . ",
  "text_data": "Age is 81.3 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 28.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, ventricular, entorhinal cortex, middle temporal gyrus) are within normal ranges or even enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:49:41.047269"
}