{
  "ptid_time": "029_S_0824_2010-09-22",
  "img_path": "/data/qiuhui/data/adni/images/029_S_0824/2010-09-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,701 mm³, 38.6% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy; hippocampal volume measures 5,917 mm³, 8.9% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; whole brain volume measures 969,659 mm³, 4.5% above the reference mean. With a Z-score of 0.54 (70.4th percentile), this represents normal volume ; entorhinal cortex volume measures 2,592 mm³, 25.1% below the reference mean. With a Z-score of -1.36 (8.7th percentile), this represents mild atrophy; fusiform gyrus volume measures 20,211 mm³, 25.5% above the reference mean. With a Z-score of 1.91 (97.2th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 18,210 mm³, 1.0% above the reference mean. With a Z-score of 0.09 (53.6th percentile), this represents normal volume . ",
  "text_data": "Age is 80.2 years. Gender is Female. Education: 13 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities. MMSE: 29.0. MoCA: 28.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging shows mild atrophy in the ventricular volume and entorhinal cortex, but hippocampal and whole brain volumes are normal. Cognitive scores (MMSE 29, MoCA 28) are intact, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Mild atrophy in some regions could suggest early changes, but preserved cognition and normal hippocampal volume support CN.)",
  "timestamp": "2025-07-26T04:15:51.763999"
}