{
  "ptid_time": "109_S_4380_2013-01-29",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4380/2013-01-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,022 mm³, 9.1% below the reference mean. With a Z-score of -0.22 (41.4th percentile), this represents normal volume ; hippocampal volume measures 8,588 mm³, 13.6% above the reference mean. With a Z-score of 1.33 (90.8th percentile), this represents mild enlargement; whole brain volume measures 1,097,100 mm³, 1.6% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume ; entorhinal cortex volume measures 5,029 mm³, 22.6% above the reference mean. With a Z-score of 1.54 (93.8th percentile), this represents moderate enlargement; fusiform gyrus volume measures 21,335 mm³, 13.3% above the reference mean. With a Z-score of 1.13 (87.1th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,164 mm³, 5.5% below the reference mean. With a Z-score of -0.49 (31.0th percentile), this represents normal volume . ",
  "text_data": "Age is 72.8 years. Gender is Male. Education: 17 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus), with no significant atrophy. Cognitive scores (MMSE, MoCA) are perfect (30/30), and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:32:52.158572"
}