{
  "ptid_time": "126_S_2360_2013-05-29",
  "img_path": "/data/qiuhui/data/adni/images/126_S_2360/2013-05-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 10,393 mm³, 65.4% below the reference mean. With a Z-score of -1.55 (6.0th percentile), this represents moderate atrophy; hippocampal volume measures 7,915 mm³, 1.4% below the reference mean. With a Z-score of -0.14 (44.5th percentile), this represents normal volume ; whole brain volume measures 1,110,650 mm³, 2.1% below the reference mean. With a Z-score of -0.30 (38.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,314 mm³, 22.3% below the reference mean. With a Z-score of -1.54 (6.2th percentile), this represents moderate atrophy; fusiform gyrus volume measures 21,916 mm³, 10.1% above the reference mean. With a Z-score of 0.84 (79.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,693 mm³, 21.1% below the reference mean. With a Z-score of -1.73 (4.1th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 65.0 years. Gender is Male. Education: 15 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 6.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.07 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate atrophy in the ventricular volume, entorhinal cortex, and middle temporal gyrus, which are regions commonly affected in early Alzheimer's disease. However, hippocampal volume is normal, and cognitive scores (MMSE 29, MoCA 26) are within normal limits, suggesting no significant functional impairment.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (given structural changes without overt dementia-level cognitive decline).  \n\n**Confidence:** **Medium** (due to conflicting indicators—some atrophy but preserved cognition and normal AV45 amyloid scan).",
  "timestamp": "2025-07-26T12:43:50.504415"
}