{
  "ptid_time": "041_S_4051_2012-01-10",
  "img_path": "/data/qiuhui/data/adni/images/041_S_4051/2012-01-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 45,302 mm³, 17.6% above the reference mean. With a Z-score of 0.42 (66.3th percentile), this represents normal volume ; hippocampal volume measures 8,092 mm³, 7.0% above the reference mean. With a Z-score of 0.69 (75.4th percentile), this represents normal volume ; whole brain volume measures 1,269,890 mm³, 17.6% above the reference mean. With a Z-score of 2.29 (98.9th percentile), this represents significant enlargement; entorhinal cortex volume measures 4,329 mm³, 5.6% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; fusiform gyrus volume measures 23,809 mm³, 26.4% above the reference mean. With a Z-score of 2.25 (98.8th percentile), this represents significant enlargement; middle temporal gyrus volume measures 25,907 mm³, 21.4% above the reference mean. With a Z-score of 1.92 (97.3th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 71.1 years. Gender is Male. Education: 16 years. MMSE: 27.0. MoCA: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in all regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's. Cognitive scores (MMSE 27, MoCA 25) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:11:29.353228"
}