{
  "ptid_time": "130_S_0956_2007-04-16",
  "img_path": "/data/qiuhui/data/adni/images/130_S_0956/2007-04-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,816 mm³, 42.6% below the reference mean. With a Z-score of -1.07 (14.3th percentile), this represents mild atrophy; hippocampal volume measures 8,097 mm³, 5.4% above the reference mean. With a Z-score of 0.60 (72.7th percentile), this represents normal volume ; whole brain volume measures 1,094,050 mm³, 6.3% above the reference mean. With a Z-score of 0.78 (78.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,117 mm³, 5.8% above the reference mean. With a Z-score of 0.45 (67.2th percentile), this represents normal volume ; fusiform gyrus volume measures 18,797 mm³, 3.2% above the reference mean. With a Z-score of 0.36 (64.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,330 mm³, 0.9% below the reference mean. With a Z-score of -0.08 (46.7th percentile), this represents normal volume . ",
  "text_data": "Age is 64.3 years. Gender is Female. Education: 7 years. MMSE: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "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). The MMSE score of 27 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant cognitive impairment is evident.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:32:40.318553"
}