{
  "ptid_time": "141_S_6178_2019-02-27",
  "img_path": "/data/qiuhui/data/adni/images/141_S_6178/2019-02-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,477 mm³, 5.1% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; hippocampal volume measures 7,501 mm³, 2.4% below the reference mean. With a Z-score of -0.27 (39.4th percentile), this represents normal volume ; whole brain volume measures 967,695 mm³, 6.0% below the reference mean. With a Z-score of -0.74 (22.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,876 mm³, 0.4% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume ; fusiform gyrus volume measures 18,298 mm³, 0.5% above the reference mean. With a Z-score of 0.05 (52.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,958 mm³, 16.8% above the reference mean. With a Z-score of 1.49 (93.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 67.0 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus) are within normal ranges, with only the middle temporal gyrus showing mild enlargement (likely not pathological). Cognitive scores (MMSE 30, MoCA 29) are intact, and APOE4 status (heterozygous) does not override the absence of structural or functional deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:07:53.029688"
}