{
  "ptid_time": "123_S_0298_2006-04-11",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0298/2006-04-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,052 mm³, 66.1% below the reference mean. With a Z-score of -1.58 (5.7th percentile), this represents moderate atrophy; hippocampal volume measures 6,853 mm³, 9.3% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; whole brain volume measures 1,047,460 mm³, 3.0% below the reference mean. With a Z-score of -0.38 (35.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,476 mm³, 15.2% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy; fusiform gyrus volume measures 16,450 mm³, 12.7% below the reference mean. With a Z-score of -1.08 (14.0th percentile), this represents mild atrophy; middle temporal gyrus volume measures 21,551 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 76.4 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Musculoskeletal; Gastrointestinal; Renal-Genitourinary; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate ventricular atrophy and mild atrophy in the entorhinal cortex and fusiform gyrus, but hippocampal and whole brain volumes are within normal ranges. Despite these structural changes, cognitive performance (MMSE: 30) is intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (structural changes are present but not severe enough to indicate MCI or dementia, and cognition remains unimpaired)",
  "timestamp": "2025-07-26T12:26:49.678509"
}