{
  "ptid_time": "036_S_2378_2015-07-08",
  "img_path": "/data/qiuhui/data/adni/images/036_S_2378/2015-07-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,717 mm³, 9.0% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume ; hippocampal volume measures 8,812 mm³, 9.8% above the reference mean. With a Z-score of 0.98 (83.6th percentile), this represents normal volume ; whole brain volume measures 1,281,000 mm³, 12.9% above the reference mean. With a Z-score of 1.83 (96.6th percentile), this represents moderate enlargement; entorhinal cortex volume measures 4,290 mm³, 0.6% above the reference mean. With a Z-score of 0.04 (51.8th percentile), this represents normal volume ; fusiform gyrus volume measures 25,937 mm³, 30.3% above the reference mean. With a Z-score of 2.52 (99.4th percentile), this represents significant enlargement; middle temporal gyrus volume measures 25,485 mm³, 13.7% above the reference mean. With a Z-score of 1.13 (87.1th percentile), this represents mild enlargement. ",
  "text_data": "Age is 63.9 years. Gender is Male. Education: 19 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within or above the normal range, with some regions showing mild to significant enlargement. Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and the presence of one APOE4 allele does not currently indicate impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T06:11:03.673972"
}