{
  "ptid_time": "135_S_4281_2015-10-20",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4281/2015-10-20/t1.nii.gz",
  "img_finding": "Image findings: hippocampal volume measures 7,043 mm³, 8.4% above the reference mean. With a Z-score of 0.68 (75.1th percentile), this represents normal volume ; whole brain volume measures 1,018,870 mm³, 9.8% above the reference mean. With a Z-score of 1.17 (88.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,300 mm³, 4.7% below the reference mean. With a Z-score of -0.25 (40.0th percentile), this represents normal volume ; fusiform gyrus volume measures 15,879 mm³, 1.4% below the reference mean. With a Z-score of -0.11 (45.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,264 mm³, 4.2% below the reference mean. With a Z-score of -0.38 (35.3th percentile), this represents normal volume . ",
  "text_data": "Age is 81.5 years. Gender is Female. Education: 18 years. MMSE: 27.0. MoCA: 25.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.93 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and whole brain volumes are above the reference mean, indicating no significant atrophy. The entorhinal cortex, fusiform gyrus, and middle temporal gyrus volumes are within normal ranges. Cognitive scores (MMSE 27, MoCA 25) are borderline but still within normal limits for age. No APOE4 alleles and only mild amyloid deposition (AV45) further reduce Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline cognitive scores, but structural imaging and biomarkers support normal aging)",
  "timestamp": "2025-07-26T15:32:59.962955"
}