{
  "ptid_time": "128_S_0200_2010-11-12",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0200/2010-11-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,996 mm³, 53.4% below the reference mean. With a Z-score of -1.27 (10.2th percentile), this represents mild atrophy; hippocampal volume measures 9,181 mm³, 14.4% above the reference mean. With a Z-score of 1.44 (92.5th percentile), this represents mild enlargement; whole brain volume measures 1,216,900 mm³, 7.3% above the reference mean. With a Z-score of 1.03 (84.8th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,331 mm³, 1.6% above the reference mean. With a Z-score of 0.11 (54.4th percentile), this represents normal volume ; fusiform gyrus volume measures 20,097 mm³, 0.9% above the reference mean. With a Z-score of 0.08 (53.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,742 mm³, 3.0% below the reference mean. With a Z-score of -0.25 (40.3th percentile), this represents normal volume . ",
  "text_data": "Age is 65.4 years. Gender is Male. Education: 16 years. Handedness: Right. Race: Asian. Medical history: Cardiovascular; Respiratory; Gastrointestinal; Renal-Genitourinary; Major Surgical Procedures. MMSE: 27.0. MoCA: 28.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy (Z-score -1.27) but otherwise normal or slightly enlarged volumes in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 27, MoCA 28) are within normal range, and amyloid PET (AV45) is negative, suggesting no significant Alzheimer's pathology.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High** (No significant structural or biomarker evidence of neurodegeneration, and cognitive performance is intact.)",
  "timestamp": "2025-07-26T13:36:17.307919"
}