{
  "ptid_time": "127_S_5228_2013-06-24",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5228/2013-06-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,258 mm³, 2.9% below the reference mean. With a Z-score of -0.07 (47.4th percentile), this represents normal volume ; hippocampal volume measures 7,961 mm³, 11.9% above the reference mean. With a Z-score of 1.09 (86.2th percentile), this represents mild enlargement; whole brain volume measures 1,008,330 mm³, 3.5% above the reference mean. With a Z-score of 0.43 (66.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,388 mm³, 7.8% below the reference mean. With a Z-score of -0.48 (31.7th percentile), this represents normal volume ; fusiform gyrus volume measures 20,407 mm³, 19.9% above the reference mean. With a Z-score of 1.82 (96.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,164 mm³, 15.6% above the reference mean. With a Z-score of 1.36 (91.2th percentile), this represents mild enlargement. ",
  "text_data": "Age is 77.8 years. Gender is Female. Education: 15 years. Handedness: Right. Race: White. Medical history: Neurologic; Cardiovascular; Endocrine-Metabolic; Gastrointestinal; Malignancy. MMSE: 27.0. MoCA: 30.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ); Total tau: 224.00 pg/mL (normal ); Phosphorylated tau: 21.07 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows normal or above-normal volumes in most regions, including the hippocampus, fusiform gyrus, and middle temporal gyrus, with only the entorhinal cortex slightly below the reference mean. Cognitive scores (MMSE 27, MoCA 30) are within normal ranges, and biomarkers (T-tau, P-tau, AV45) are normal. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T13:28:38.037141"
}