{
  "ptid_time": "094_S_1267_2007-03-22",
  "img_path": "/data/qiuhui/data/adni/images/094_S_1267/2007-03-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,980 mm³, 48.1% below the reference mean. With a Z-score of -1.15 (12.4th percentile), this represents mild atrophy; hippocampal volume measures 8,656 mm³, 14.5% above the reference mean. With a Z-score of 1.42 (92.2th percentile), this represents mild enlargement; whole brain volume measures 1,195,620 mm³, 10.8% above the reference mean. With a Z-score of 1.40 (91.9th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,329 mm³, 5.6% above the reference mean. With a Z-score of 0.38 (64.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,227 mm³, 2.1% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,953 mm³, 2.9% above the reference mean. With a Z-score of 0.26 (60.2th percentile), this represents normal volume . ",
  "text_data": "Age is 73.2 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Malignancy; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild ventricular atrophy but otherwise normal to mildly enlarged volumes in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus). The MMSE score of 30 is normal, and the absence of APOE4 alleles reduces genetic risk. No significant atrophy in Alzheimer’s-vulnerable regions is observed.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T10:20:21.112709"
}