{
  "ptid_time": "033_S_5259_2018-11-07",
  "img_path": "/data/qiuhui/data/adni/images/033_S_5259/2018-11-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,241 mm³, 47.9% below the reference mean. With a Z-score of -1.29 (9.8th percentile), this represents mild atrophy; hippocampal volume measures 6,999 mm³, 7.8% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; whole brain volume measures 1,000,070 mm³, 7.7% above the reference mean. With a Z-score of 0.93 (82.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,480 mm³, 0.5% above the reference mean. With a Z-score of 0.03 (51.1th percentile), this represents normal volume ; fusiform gyrus volume measures 16,111 mm³, 0.0% above the reference mean. With a Z-score of 0.00 (50.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,476 mm³, 2.5% above the reference mean. With a Z-score of 0.22 (58.7th percentile), this represents normal volume . ",
  "text_data": "Age is 83.8 years. Gender is Female. Education: 18 years. MMSE: 28.0. MoCA: 25.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and there is no APOE4 genetic risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:39:43.882780"
}