{
  "ptid_time": "073_S_2191_2014-04-21",
  "img_path": "/data/qiuhui/data/adni/images/073_S_2191/2014-04-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,859 mm³, 29.0% below the reference mean. With a Z-score of -0.73 (23.4th percentile), this represents normal volume ; hippocampal volume measures 7,934 mm³, 3.2% above the reference mean. With a Z-score of 0.36 (64.2th percentile), this represents normal volume ; whole brain volume measures 1,158,130 mm³, 12.5% above the reference mean. With a Z-score of 1.56 (94.1th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,957 mm³, 1.6% above the reference mean. With a Z-score of 0.13 (55.1th percentile), this represents normal volume ; fusiform gyrus volume measures 22,745 mm³, 24.9% above the reference mean. With a Z-score of 2.80 (99.7th percentile), this represents significant enlargement; middle temporal gyrus volume measures 22,597 mm³, 10.1% above the reference mean. With a Z-score of 0.90 (81.6th percentile), this represents normal volume . ",
  "text_data": "Age is 69.7 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, entorhinal cortex, ventricular, and middle temporal gyrus) are within normal ranges or even enlarged, with no atrophy suggestive of neurodegeneration. Cognitive scores (MMSE 30, MoCA 29) are intact, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:38:20.957554"
}