{
  "ptid_time": "032_S_6211_2018-03-19",
  "img_path": "/data/qiuhui/data/adni/images/032_S_6211/2018-03-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,496 mm³, 24.5% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; hippocampal volume measures 6,716 mm³, 3.6% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; whole brain volume measures 1,194,120 mm³, 16.0% above the reference mean. With a Z-score of 2.10 (98.2th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,038 mm³, 1.7% above the reference mean. With a Z-score of 0.11 (54.5th percentile), this represents normal volume ; fusiform gyrus volume measures 21,806 mm³, 20.7% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 21,537 mm³, 6.8% above the reference mean. With a Z-score of 0.61 (72.8th percentile), this represents normal volume . ",
  "text_data": "Age is 80.6 years. Gender is Male. Education: 14 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 5.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-normal volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. Cognitive scores (MMSE 27, MoCA 24) are within normal limits for age, and amyloid PET (AV45) is normal. No APOE4 risk alleles are present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:08:09.165555"
}