{
  "ptid_time": "002_S_1280_2011-05-04",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1280/2011-05-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,335 mm³, 13.3% below the reference mean. With a Z-score of -0.30 (38.0th percentile), this represents normal volume ; hippocampal volume measures 6,729 mm³, 5.4% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume ; whole brain volume measures 961,329 mm³, 1.4% below the reference mean. With a Z-score of -0.17 (43.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,563 mm³, 3.0% below the reference mean. With a Z-score of -0.18 (42.7th percentile), this represents normal volume ; fusiform gyrus volume measures 16,430 mm³, 3.4% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,471 mm³, 8.9% below the reference mean. With a Z-score of -0.77 (22.1th percentile), this represents normal volume . ",
  "text_data": "Age is 74.7 years. Gender is Female. Education: 14 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Smoking. MMSE: 28.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.10 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive scores (MMSE 28, MoCA 25) are within normal limits for age, and amyloid PET (AV45) is normal. APOE4 carrier status does not override the absence of structural or biomarker abnormalities.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:16:48.919921"
}