{
  "ptid_time": "051_S_1072_2007-07-03",
  "img_path": "/data/qiuhui/data/adni/images/051_S_1072/2007-07-03/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,337 mm³, 44.8% below the reference mean. With a Z-score of -1.12 (13.1th percentile), this represents mild atrophy; hippocampal volume measures 8,540 mm³, 11.1% above the reference mean. With a Z-score of 1.25 (89.4th percentile), this represents mild enlargement; whole brain volume measures 1,087,200 mm³, 5.6% above the reference mean. With a Z-score of 0.70 (75.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,349 mm³, 11.7% above the reference mean. With a Z-score of 0.91 (81.8th percentile), this represents normal volume ; fusiform gyrus volume measures 19,439 mm³, 6.7% above the reference mean. With a Z-score of 0.76 (77.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,260 mm³, 13.4% above the reference mean. With a Z-score of 1.19 (88.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 60.3 years. Gender is Female. Education: 13 years. MMSE: 29.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal or even slightly enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles reduces genetic risk. No significant structural or cognitive deficits are evident.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:31:31.163451"
}