{
  "ptid_time": "116_S_0360_2006-05-02",
  "img_path": "/data/qiuhui/data/adni/images/116_S_0360/2006-05-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,132 mm³, 34.8% below the reference mean. With a Z-score of -0.83 (20.3th percentile), this represents normal volume ; hippocampal volume measures 8,512 mm³, 12.6% above the reference mean. With a Z-score of 1.23 (89.1th percentile), this represents mild enlargement; whole brain volume measures 1,171,630 mm³, 8.5% above the reference mean. With a Z-score of 1.11 (86.6th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,005 mm³, 22.1% above the reference mean. With a Z-score of 1.50 (93.3th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,917 mm³, 4.9% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,682 mm³, 3.1% below the reference mean. With a Z-score of -0.28 (39.1th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Dermatologic-Connective Tissue; Musculoskeletal; Endocrine-Metabolic; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 29.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or mildly enlarged structures, with no significant atrophy in regions typically affected in Alzheimer's (e.g., hippocampus, entorhinal cortex). The MMSE score of 29 is within the normal range, and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:51:00.241202"
}