{
  "ptid_time": "100_S_4556_2013-06-06",
  "img_path": "/data/qiuhui/data/adni/images/100_S_4556/2013-06-06/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,661 mm³, 17.8% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume ; hippocampal volume measures 8,170 mm³, 8.1% above the reference mean. With a Z-score of 0.79 (78.5th percentile), this represents normal volume ; whole brain volume measures 1,071,180 mm³, 0.8% below the reference mean. With a Z-score of -0.10 (46.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,155 mm³, 1.3% above the reference mean. With a Z-score of 0.09 (53.6th percentile), this represents normal volume ; fusiform gyrus volume measures 20,342 mm³, 8.0% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,827 mm³, 7.0% above the reference mean. With a Z-score of 0.63 (73.5th percentile), this represents normal volume . ",
  "text_data": "Age is 73.9 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "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 26) are also within normal limits for age, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:26:04.080167"
}