{
  "ptid_time": "072_S_4394_2014-01-17",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4394/2014-01-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,732 mm³, 27.3% above the reference mean. With a Z-score of 0.63 (73.4th percentile), this represents normal volume ; hippocampal volume measures 6,431 mm³, 9.6% below the reference mean. With a Z-score of -0.88 (18.9th percentile), this represents normal volume ; whole brain volume measures 1,013,450 mm³, 4.0% above the reference mean. With a Z-score of 0.50 (69.2th percentile), this represents normal volume ; entorhinal cortex volume measures 2,910 mm³, 20.8% below the reference mean. With a Z-score of -1.27 (10.1th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,396 mm³, 8.1% above the reference mean. With a Z-score of 0.74 (77.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,476 mm³, 12.0% above the reference mean. With a Z-score of 1.04 (85.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.9 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean but still within the normal range (Z-score -0.88). The entorhinal cortex shows mild atrophy (Z-score -1.27), which is notable but not severe. Cognitive scores (MMSE 30, MoCA 25) are within normal limits, and amyloid PET (AV45) is normal.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to mild entorhinal atrophy, but no significant cognitive impairment or amyloid pathology)",
  "timestamp": "2025-07-26T09:21:55.355290"
}