{
  "ptid_time": "153_S_4151_2013-09-10",
  "img_path": "/data/qiuhui/data/adni/images/153_S_4151/2013-09-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,594 mm³, 46.5% below the reference mean. With a Z-score of -1.11 (13.2th percentile), this represents mild atrophy; hippocampal volume measures 7,433 mm³, 1.7% below the reference mean. With a Z-score of -0.16 (43.5th percentile), this represents normal volume ; whole brain volume measures 884,219 mm³, 18.1% below the reference mean. With a Z-score of -2.35 (0.9th percentile), this represents significant atrophy; entorhinal cortex volume measures 3,564 mm³, 13.1% below the reference mean. With a Z-score of -0.89 (18.7th percentile), this represents normal volume ; fusiform gyrus volume measures 12,419 mm³, 34.1% below the reference mean. With a Z-score of -2.90 (0.2th percentile), this represents significant atrophy; middle temporal gyrus volume measures 18,135 mm³, 15.0% below the reference mean. With a Z-score of -1.35 (8.9th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.2 years. Gender is Male. Education: 14 years. MMSE: 26.0. MoCA: 26.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.43 SUVR (significant elevated). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows significant atrophy in whole brain and fusiform gyrus volumes, along with mild atrophy in ventricular and middle temporal gyrus volumes, while hippocampal and entorhinal cortex volumes remain normal. The MMSE and MoCA scores are borderline (26/30), and the AV45 scan indicates significant amyloid deposition, but the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (Cognitive scores are near-normal, but significant atrophy and amyloid burden suggest early neurodegenerative changes.)",
  "timestamp": "2025-07-26T17:12:38.552785"
}