{
  "ptid_time": "011_S_4120_2012-07-24",
  "img_path": "/data/qiuhui/data/adni/images/011_S_4120/2012-07-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 37,684 mm³, 1.9% above the reference mean. With a Z-score of 0.05 (52.1th percentile), this represents normal volume ; hippocampal volume measures 6,722 mm³, 3.5% above the reference mean. With a Z-score of 0.28 (61.0th percentile), this represents normal volume ; whole brain volume measures 957,648 mm³, 3.2% above the reference mean. With a Z-score of 0.38 (64.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,687 mm³, 6.5% above the reference mean. With a Z-score of 0.35 (63.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,710 mm³, 9.9% above the reference mean. With a Z-score of 0.75 (77.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,163 mm³, 4.8% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume . ",
  "text_data": "Age is 82.8 years. Gender is Female. Education: 17 years. MMSE: 30.0. Logical Memory: 5.0. 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 most structures slightly above the reference mean. The MMSE score of 30/30 indicates no cognitive impairment, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:54:41.172956"
}