{
  "ptid_time": "133_S_0488_2006-12-14",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0488/2006-12-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,575 mm³, 48.1% below the reference mean. With a Z-score of -1.10 (13.5th percentile), this represents mild atrophy; hippocampal volume measures 9,049 mm³, 27.2% above the reference mean. With a Z-score of 2.49 (99.4th percentile), this represents significant enlargement; whole brain volume measures 1,058,780 mm³, 8.6% above the reference mean. With a Z-score of 1.09 (86.1th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,238 mm³, 15.4% above the reference mean. With a Z-score of 0.94 (82.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,056 mm³, 0.3% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,834 mm³, 7.0% below the reference mean. With a Z-score of -0.60 (27.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 16 years. MMSE: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild ventricular atrophy but otherwise normal to above-normal volumes in key regions (hippocampus, whole brain, entorhinal cortex). The MMSE score of 28 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": "2025-07-26T15:16:47.359784"
}