{
  "ptid_time": "135_S_4566_2012-09-19",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4566/2012-09-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,486 mm³, 28.3% below the reference mean. With a Z-score of -0.77 (22.2th percentile), this represents normal volume ; hippocampal volume measures 7,678 mm³, 18.2% above the reference mean. With a Z-score of 1.46 (92.8th percentile), this represents mild enlargement; whole brain volume measures 979,148 mm³, 5.5% above the reference mean. With a Z-score of 0.66 (74.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,373 mm³, 2.6% below the reference mean. With a Z-score of -0.14 (44.4th percentile), this represents normal volume ; fusiform gyrus volume measures 15,460 mm³, 4.0% below the reference mean. With a Z-score of -0.30 (38.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,948 mm³, 6.0% below the reference mean. With a Z-score of -0.53 (29.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.9 years. Gender is Female. Education: 12 years. MMSE: 30.0. MoCA: 28.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measures are largely within normal ranges, with no significant atrophy in key regions like the hippocampus (which is actually mildly enlarged). Cognitive scores (MMSE 30, MoCA 28) are intact, and while APOE4 is present, there is no structural or functional evidence of neurodegeneration.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T15:38:06.077784"
}