{
  "ptid_time": "002_S_5256_2014-02-19",
  "img_path": "/data/qiuhui/data/adni/images/002_S_5256/2014-02-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,162 mm³, 13.9% below the reference mean. With a Z-score of -0.32 (37.5th percentile), this represents normal volume ; hippocampal volume measures 7,518 mm³, 5.7% above the reference mean. With a Z-score of 0.52 (69.9th percentile), this represents normal volume ; whole brain volume measures 1,004,380 mm³, 3.0% above the reference mean. With a Z-score of 0.38 (64.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,095 mm³, 11.5% above the reference mean. With a Z-score of 0.71 (76.0th percentile), this represents normal volume ; fusiform gyrus volume measures 18,218 mm³, 7.1% above the reference mean. With a Z-score of 0.64 (74.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,097 mm³, 0.4% below the reference mean. With a Z-score of -0.03 (48.7th percentile), this represents normal volume . ",
  "text_data": "Age is 70.9 years. Gender is Female. Education: 20 years. MMSE: 29.0. MoCA: 27.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores close to or above the mean. Cognitive scores (MMSE 29, MoCA 27) are also within normal limits for age, and the presence of one APOE4 allele does not necessarily indicate pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:35:23.790981"
}