{
  "ptid_time": "011_S_0023_2013-12-23",
  "img_path": "/data/qiuhui/data/adni/images/011_S_0023/2013-12-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,074 mm³, 16.7% below the reference mean. With a Z-score of -0.40 (34.4th percentile), this represents normal volume ; hippocampal volume measures 7,704 mm³, 1.9% above the reference mean. With a Z-score of 0.19 (57.4th percentile), this represents normal volume ; whole brain volume measures 1,021,860 mm³, 5.3% below the reference mean. With a Z-score of -0.69 (24.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,440 mm³, 16.1% below the reference mean. With a Z-score of -1.09 (13.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,383 mm³, 2.4% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,736 mm³, 7.5% below the reference mean. With a Z-score of -0.68 (25.0th percentile), this represents normal volume . ",
  "text_data": "Age is 79.7 years. Gender is Male. Education: 14 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with only mild atrophy in the entorhinal cortex (Z-score -1.09, 13.7th percentile). Cognitive scores (MMSE 29, MoCA 26) are within normal limits for age, and there is no APOE4 genetic risk factor.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:42:45.499679"
}