{
  "ptid_time": "022_S_1351_2007-03-16",
  "img_path": "/data/qiuhui/data/adni/images/022_S_1351/2007-03-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,904 mm³, 14.8% below the reference mean. With a Z-score of -0.34 (36.7th percentile), this represents normal volume ; hippocampal volume measures 6,709 mm³, 5.7% below the reference mean. With a Z-score of -0.52 (30.1th percentile), this represents normal volume ; whole brain volume measures 1,003,530 mm³, 3.0% above the reference mean. With a Z-score of 0.37 (64.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,861 mm³, 5.1% above the reference mean. With a Z-score of 0.31 (62.3th percentile), this represents normal volume ; fusiform gyrus volume measures 16,284 mm³, 4.3% below the reference mean. With a Z-score of -0.39 (34.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,556 mm³, 2.0% above the reference mean. With a Z-score of 0.18 (56.9th percentile), this represents normal volume . ",
  "text_data": "Age is 71.8 years. Gender is Female. Education: 12 years. Handedness: Right. Race: White. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 4.0. APOEε4 alleles: 2.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 30 is optimal, indicating no cognitive impairment. However, the presence of two APOE4 alleles increases genetic risk for Alzheimer's, though current imaging and cognitive metrics do not show abnormalities.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to high genetic risk but normal current biomarkers and cognition)",
  "timestamp": "2025-07-26T02:09:27.777798"
}