{
  "ptid_time": "011_S_0021_2010-10-08",
  "img_path": "/data/qiuhui/data/adni/images/011_S_0021/2010-10-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,783 mm³, 33.1% below the reference mean. With a Z-score of -0.76 (22.4th percentile), this represents normal volume ; hippocampal volume measures 8,005 mm³, 12.5% above the reference mean. With a Z-score of 1.15 (87.5th percentile), this represents mild enlargement; whole brain volume measures 949,275 mm³, 2.6% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,057 mm³, 16.8% below the reference mean. With a Z-score of -1.03 (15.2th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,199 mm³, 7.0% above the reference mean. With a Z-score of 0.63 (73.7th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,376 mm³, 9.4% below the reference mean. With a Z-score of -0.81 (20.8th percentile), this represents normal volume . ",
  "text_data": "Age is 77.6 years. Gender is Female. Education: 18 years. Handedness: Right. Race: Black or African American. Medical history: Psychiatric; Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 29.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is mildly enlarged, and the entorhinal cortex shows mild atrophy, but other brain volumes (ventricular, whole brain, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 29, MoCA 26) are intact, and amyloid PET (AV45) is normal, with no APOE4 risk alleles.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T22:40:05.682833"
}