{
  "ptid_time": "133_S_0493_2008-05-28",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0493/2008-05-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 61,874 mm³, 60.6% above the reference mean. With a Z-score of 1.45 (92.7th percentile), this represents mild enlargement; hippocampal volume measures 8,510 mm³, 12.6% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement; whole brain volume measures 1,115,030 mm³, 3.3% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,759 mm³, 8.3% below the reference mean. With a Z-score of -0.56 (28.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,272 mm³, 8.3% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,694 mm³, 11.0% above the reference mean. With a Z-score of 0.99 (83.9th percentile), this represents normal volume . ",
  "text_data": "Age is 79.5 years. Gender is Male. Education: 20 years. MMSE: 30.0. Logical Memory: 15.0. Laboratory findings: Platelets: 118.00 (significant reduced); Total Bilirubin: 1.30 (profound elevated); Serum Glucose: 206.00 (profound elevated); Direct Bilirubin: 0.30 (significant elevated). APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume is mildly enlarged (60.6% above mean), but hippocampal volume is actually *above* the reference mean (12.6%), and whole brain volume is normal. The entorhinal cortex and fusiform gyrus show slight reductions but remain within normal Z-score ranges. The MMSE is perfect (30/30), and there is no APOE4 risk allele. No clear neurodegenerative atrophy pattern is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:20:42.714711"
}