{
  "ptid_time": "027_S_5079_2014-03-25",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5079/2014-03-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,189 mm³, 24.2% below the reference mean. With a Z-score of -0.58 (28.1th percentile), this represents normal volume ; hippocampal volume measures 7,695 mm³, 1.8% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; whole brain volume measures 1,175,770 mm³, 8.9% above the reference mean. With a Z-score of 1.16 (87.7th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,382 mm³, 6.9% above the reference mean. With a Z-score of 0.47 (67.9th percentile), this represents normal volume ; fusiform gyrus volume measures 23,256 mm³, 23.4% above the reference mean. With a Z-score of 2.00 (97.7th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,303 mm³, 9.5% below the reference mean. With a Z-score of -0.86 (19.6th percentile), this represents normal volume . ",
  "text_data": "Age is 74.2 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or show mild-to-moderate enlargement (e.g., whole brain, fusiform gyrus), with no significant atrophy in key regions like the hippocampus or entorhinal cortex. Cognitive scores (MMSE 29, 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": "2025-07-26T04:06:18.571845"
}