{
  "ptid_time": "073_S_2225_2014-04-10",
  "img_path": "/data/qiuhui/data/adni/images/073_S_2225/2014-04-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,452 mm³, 28.7% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; hippocampal volume measures 8,518 mm³, 12.7% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; whole brain volume measures 1,175,010 mm³, 8.9% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,240 mm³, 3.4% above the reference mean. With a Z-score of 0.23 (59.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,676 mm³, 0.9% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 26,810 mm³, 25.6% above the reference mean. With a Z-score of 2.30 (98.9th percentile), this represents significant enlargement. ",
  "text_data": "Age is 73.4 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows no significant atrophy in key regions typically affected in Alzheimer's (e.g., hippocampus, entorhinal cortex), with some regions even mildly enlarged. Cognitive scores (MMSE 29, MoCA 25) are within normal to borderline range, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:39:13.715391"
}