{
  "ptid_time": "128_S_4599_2013-05-14",
  "img_path": "/data/qiuhui/data/adni/images/128_S_4599/2013-05-14/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,323 mm³, 8.8% below the reference mean. With a Z-score of -0.88 (19.0th percentile), this represents normal volume ; whole brain volume measures 1,277,120 mm³, 12.6% above the reference mean. With a Z-score of 1.78 (96.2th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,054 mm³, 4.9% below the reference mean. With a Z-score of -0.34 (36.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,828 mm³, 9.6% above the reference mean. With a Z-score of 0.80 (78.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,861 mm³, 6.5% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume . ",
  "text_data": "Age is 60.9 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.88, 19th percentile). Cognitive scores (MMSE 30, MoCA 30) are intact, and there are no significant structural deficits in key AD-related regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus). The presence of one APOE4 allele increases AD risk but does not confirm pathology in the absence of cognitive or biomarker abnormalities.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:02:31.322516"
}