{
  "ptid_time": "141_S_0810_2006-10-17",
  "img_path": "/data/qiuhui/data/adni/images/141_S_0810/2006-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,516 mm³, 7.4% above the reference mean. With a Z-score of 0.22 (58.6th percentile), this represents normal volume ; hippocampal volume measures 7,259 mm³, 4.2% above the reference mean. With a Z-score of 0.36 (64.1th percentile), this represents normal volume ; whole brain volume measures 1,021,590 mm³, 0.7% below the reference mean. With a Z-score of -0.10 (46.2th percentile), this represents normal volume ; entorhinal cortex volume measures 4,786 mm³, 20.6% above the reference mean. With a Z-score of 1.35 (91.1th percentile), this represents mild enlargement; fusiform gyrus volume measures 15,021 mm³, 16.9% below the reference mean. With a Z-score of -1.46 (7.2th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,006 mm³, 0.8% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume . ",
  "text_data": "Age is 83.3 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 10.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with mild enlargement in the entorhinal cortex and mild atrophy in the fusiform gyrus. The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles reduces genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild atrophy in the fusiform gyrus, but overall preserved cognition and normal hippocampal/whole-brain volumes)",
  "timestamp": "2025-07-26T16:49:38.174373"
}