{
  "ptid_time": "027_S_5093_2013-02-27",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5093/2013-02-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,030 mm³, 14.8% below the reference mean. With a Z-score of -0.37 (35.6th percentile), this represents normal volume ; hippocampal volume measures 6,208 mm³, 19.2% below the reference mean. With a Z-score of -2.16 (1.6th percentile), this represents significant atrophy; whole brain volume measures 1,041,780 mm³, 1.2% above the reference mean. With a Z-score of 0.15 (56.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,320 mm³, 14.7% below the reference mean. With a Z-score of -1.14 (12.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,054 mm³, 0.9% below the reference mean. With a Z-score of -0.10 (46.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,147 mm³, 7.9% above the reference mean. With a Z-score of 0.70 (76.0th percentile), this represents normal volume . ",
  "text_data": "Age is 69.3 years. Gender is Female. Education: 19 years. Handedness: Right. Race: White. Medical history: Psychiatric; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Hematopoietic-Lymphatic. MMSE: 30.0. MoCA: 28.0. Logical Memory: 16.0. Laboratory findings: MCHC: 36.00 (significant elevated). APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.04 SUVR (normal ); Total tau: 243.60 pg/mL (normal ); Phosphorylated tau: 21.86 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows significant atrophy (Z-score -2.16, 1.6th percentile), while the entorhinal cortex has mild atrophy (Z-score -1.14, 12.7th percentile). However, cognitive scores (MMSE 30, MoCA 28) are intact, and biomarkers (T-tau, P-tau, AV45) are normal.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to hippocampal atrophy but normal cognition and biomarkers)",
  "timestamp": "2025-07-26T04:07:10.319333"
}