{
  "ptid_time": "033_S_5198_2018-11-14",
  "img_path": "/data/qiuhui/data/adni/images/033_S_5198/2018-11-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,383 mm³, 9.6% below the reference mean. With a Z-score of -0.22 (41.3th percentile), this represents normal volume ; hippocampal volume measures 8,340 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 1,047,120 mm³, 7.4% above the reference mean. With a Z-score of 0.94 (82.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,524 mm³, 4.1% below the reference mean. With a Z-score of -0.25 (40.2th percentile), this represents normal volume ; fusiform gyrus volume measures 19,683 mm³, 15.7% above the reference mean. With a Z-score of 1.43 (92.3th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,773 mm³, 13.6% above the reference mean. With a Z-score of 1.18 (88.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 74.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 18.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus, which is typically atrophied in Alzheimer's disease. Cognitive scores (MMSE and MoCA) are perfect (30/30), and there is no indication of memory or functional impairment. The presence of one APOE4 allele increases genetic risk but does not confirm pathology.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T05:38:55.581412"
}