{
  "ptid_time": "128_S_0272_2010-09-14",
  "img_path": "/data/qiuhui/data/adni/images/128_S_0272/2010-09-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,422 mm³, 8.4% above the reference mean. With a Z-score of 0.19 (57.6th percentile), this represents normal volume ; hippocampal volume measures 7,559 mm³, 6.2% above the reference mean. With a Z-score of 0.57 (71.7th percentile), this represents normal volume ; whole brain volume measures 1,085,530 mm³, 11.4% above the reference mean. With a Z-score of 1.43 (92.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,237 mm³, 15.4% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,219 mm³, 13.0% above the reference mean. With a Z-score of 1.18 (88.1th percentile), this represents mild enlargement; middle temporal gyrus volume measures 23,945 mm³, 24.9% above the reference mean. With a Z-score of 2.16 (98.5th percentile), this represents significant enlargement. ",
  "text_data": "Age is 74.4 years. Gender is Female. Education: 19 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. MoCA: 28.0. Logical Memory: 20.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.98 SUVR (normal ); Amyloid beta: 1431.00 pg/mL (mild elevated); Total tau: 271.00 pg/mL (normal ); Phosphorylated tau: 23.79 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampal, ventricular, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal to mildly/significantly enlarged ranges, with no atrophy. Cognitive scores (MMSE 30, MoCA 28) are intact, and CSF biomarkers show only mild Aβ elevation without tau pathology. APOE4-negative status further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:44:11.909161"
}