{
  "ptid_time": "131_S_1301_2010-03-02",
  "img_path": "/data/qiuhui/data/adni/images/131_S_1301/2010-03-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 34,283 mm³, 22.1% above the reference mean. With a Z-score of 0.51 (69.4th percentile), this represents normal volume ; hippocampal volume measures 8,341 mm³, 17.2% above the reference mean. With a Z-score of 1.58 (94.3th percentile), this represents moderate enlargement; whole brain volume measures 1,064,370 mm³, 9.2% above the reference mean. With a Z-score of 1.16 (87.7th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,925 mm³, 6.9% above the reference mean. With a Z-score of 0.42 (66.3th percentile), this represents normal volume ; fusiform gyrus volume measures 14,519 mm³, 14.7% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; middle temporal gyrus volume measures 19,010 mm³, 0.8% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume . ",
  "text_data": "Age is 75.1 years. Gender is Female. Education: 18 years. MMSE: 30.0. Logical Memory: 23.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild atrophy in the fusiform gyrus but otherwise normal or enlarged volumes in other regions, including the hippocampus and entorhinal cortex. The MMSE score of 30 is within the normal range, and there are no significant cognitive deficits reported.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to the mild fusiform gyrus atrophy, but no other supporting evidence of cognitive decline)",
  "timestamp": "2025-07-26T15:12:53.038978"
}