{
  "ptid_time": "027_S_6577_2020-12-09",
  "img_path": "/data/qiuhui/data/adni/images/027_S_6577/2020-12-09/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,495 mm³, 8.4% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; hippocampal volume measures 8,272 mm³, 3.1% above the reference mean. With a Z-score of 0.31 (62.0th percentile), this represents normal volume ; whole brain volume measures 1,104,970 mm³, 2.6% below the reference mean. With a Z-score of -0.37 (35.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,678 mm³, 9.7% above the reference mean. With a Z-score of 0.67 (75.0th percentile), this represents normal volume ; fusiform gyrus volume measures 21,102 mm³, 6.0% above the reference mean. With a Z-score of 0.50 (69.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,516 mm³, 17.4% below the reference mean. With a Z-score of -1.43 (7.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 68.8 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 29.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal volumes in most regions, except for mild atrophy in the middle temporal gyrus. Cognitive scores (MMSE and MoCA) are within the normal range, and APOE4 status (heterozygous) does not strongly indicate high risk alone.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Mild atrophy in the middle temporal gyrus is noted, but cognitive performance remains intact, suggesting no current impairment.)",
  "timestamp": "2025-07-26T04:13:51.228974"
}