{
  "ptid_time": "133_S_0493_2008-05-23",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0493/2008-05-23/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 brain imaging shows mild ventricular enlargement (Z-score 1.45) and mild hippocampal enlargement (Z-score 1.23), but overall brain volume is normal (Z-score 0.43). The entorhinal cortex and fusiform gyrus volumes are slightly below the mean but still within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (While structural changes are present, cognitive performance remains intact, and no significant atrophy in key AD-related regions is observed",
  "timestamp": "2025-07-26T15:20:36.763132"
}