{
  "ptid_time": "127_S_5266_2018-09-28",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5266/2018-09-28/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,750 mm³, 11.0% above the reference mean. With a Z-score of 0.26 (60.4th percentile), this represents normal volume ; hippocampal volume measures 8,377 mm³, 10.8% above the reference mean. With a Z-score of 1.06 (85.4th percentile), this represents mild enlargement; whole brain volume measures 1,075,070 mm³, 0.4% below the reference mean. With a Z-score of -0.05 (47.9th percentile), this represents normal volume ; entorhinal cortex volume measures 6,019 mm³, 46.8% above the reference mean. With a Z-score of 3.17 (99.9th percentile), this represents profound enlargement; fusiform gyrus volume measures 18,555 mm³, 1.5% below the reference mean. With a Z-score of -0.13 (44.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,438 mm³, 0.5% above the reference mean. With a Z-score of 0.04 (51.7th percentile), this represents normal volume . ",
  "text_data": "Age is 70.9 years. Gender is Male. Education: 16 years. MMSE: 28.0. MoCA: 27.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or above-average volumes in key regions, including the hippocampus and entorhinal cortex, which are typically affected in Alzheimer's disease. Cognitive scores (MMSE 28, MoCA 27) are within the normal range, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:29:32.330420"
}