{
  "ptid_time": "022_S_0130_2008-02-12",
  "img_path": "/data/qiuhui/data/adni/images/022_S_0130/2008-02-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,570 mm³, 41.4% below the reference mean. With a Z-score of -0.99 (16.1th percentile), this represents normal volume ; hippocampal volume measures 7,992 mm³, 5.7% above the reference mean. With a Z-score of 0.56 (71.2th percentile), this represents normal volume ; whole brain volume measures 1,204,130 mm³, 11.6% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,456 mm³, 8.7% above the reference mean. With a Z-score of 0.59 (72.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,967 mm³, 11.3% above the reference mean. With a Z-score of 0.96 (83.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,899 mm³, 26.1% above the reference mean. With a Z-score of 2.34 (99.0th percentile), this represents significant enlargement. ",
  "text_data": "Age is 75.1 years. Gender is Male. Education: 16 years. MMSE: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (hippocampus, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within or above normal ranges, with no significant atrophy. The MMSE score of 30 is optimal, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T02:04:06.183480"
}