{
  "ptid_time": "116_S_0382_2018-08-16",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0382/2018-08-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,433 mm³, 17.5% above the reference mean. With a Z-score of 0.47 (68.2th percentile), this represents normal volume ; hippocampal volume measures 6,711 mm³, 3.3% above the reference mean. With a Z-score of 0.27 (60.5th percentile), this represents normal volume ; whole brain volume measures 980,683 mm³, 5.7% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,210 mm³, 7.3% below the reference mean. With a Z-score of -0.39 (34.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,425 mm³, 20.6% above the reference mean. With a Z-score of 1.55 (93.9th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,641 mm³, 8.9% above the reference mean. With a Z-score of 0.80 (78.7th percentile), this represents normal volume . ",
  "text_data": "Age is 87.5 years. Gender is Female. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or slightly above, except for the fusiform gyrus, which shows moderate enlargement but is not typically associated with neurodegeneration. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 risk allele.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:54:06.787907"
}