{
  "ptid_time": "041_S_4874_2018-09-06",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4874/2018-09-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,674 mm³, 16.4% below the reference mean. With a Z-score of -0.41 (34.1th percentile), this represents normal volume ; hippocampal volume measures 8,183 mm³, 6.5% above the reference mean. With a Z-score of 0.73 (76.7th percentile), this represents normal volume ; whole brain volume measures 1,016,940 mm³, 1.2% below the reference mean. With a Z-score of -0.15 (44.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,238 mm³, 8.9% above the reference mean. With a Z-score of 0.69 (75.4th percentile), this represents normal volume ; fusiform gyrus volume measures 17,317 mm³, 4.9% below the reference mean. With a Z-score of -0.55 (29.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,849 mm³, 3.3% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume . ",
  "text_data": "Age is 63.7 years. Gender is Female. Education: 18 years. MMSE: 28.0. MoCA: 29.0. Logical Memory: 13.0. 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) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE: 28, MoCA: 29) are well within normal limits, indicating no significant cognitive impairment. The presence of one APOE4 allele increases Alzheimer's risk but does not currently manifest in structural or cognitive deficits.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:20:42.382270"
}