{
  "ptid_time": "002_S_0413_2015-06-09",
  "img_path": "/data/qiuhui/data/adni/images/002_S_0413/2015-06-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,430 mm³, 1.4% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; hippocampal volume measures 6,549 mm³, 0.8% above the reference mean. With a Z-score of 0.07 (52.7th percentile), this represents normal volume ; whole brain volume measures 1,041,990 mm³, 12.3% above the reference mean. With a Z-score of 1.47 (92.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,085 mm³, 18.0% above the reference mean. With a Z-score of 0.97 (83.4th percentile), this represents normal volume ; fusiform gyrus volume measures 19,982 mm³, 24.0% above the reference mean. With a Z-score of 1.81 (96.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 20,015 mm³, 11.0% above the reference mean. With a Z-score of 0.98 (83.7th percentile), this represents normal volume . ",
  "text_data": "Age is 85.3 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.92 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges or even enlarged, with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE, MoCA) are perfect, and there is no genetic (APOE4-negative) or amyloid (AV45: mild reduced) evidence strongly supporting Alzheimer's pathology.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-25T20:01:56.457903"
}