{
  "ptid_time": "002_S_1261_2007-02-15",
  "img_path": "/data/qiuhui/data/adni/images/002_S_1261/2007-02-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,271 mm³, 15.0% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume ; hippocampal volume measures 6,261 mm³, 12.0% below the reference mean. With a Z-score of -1.10 (13.6th percentile), this represents mild atrophy; whole brain volume measures 1,012,400 mm³, 3.9% above the reference mean. With a Z-score of 0.49 (68.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,623 mm³, 28.6% below the reference mean. With a Z-score of -1.75 (4.0th percentile), this represents moderate atrophy; fusiform gyrus volume measures 16,949 mm³, 0.4% below the reference mean. With a Z-score of -0.03 (48.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,828 mm³, 3.4% above the reference mean. With a Z-score of 0.30 (61.7th percentile), this represents normal volume . ",
  "text_data": "Age is 71.1 years. Gender is Female. Education: 16 years. Handedness: Right. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Renal-Genitourinary; Smoking; Major Surgical Procedures. MMSE: 30.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows mild hippocampal atrophy (Z-score -1.10) and moderate entorhinal cortex atrophy (Z-score -1.75), both of which are associated with early Alzheimer's pathology. However, cognitive performance (MMSE 30) is intact, and other brain regions are within normal ranges.  \n**Diagnosis:** **MCI** (due to structural changes despite normal cognition, suggesting preclinical or very early-stage decline).  \n**Confidence:** **Medium** (clinical correlation needed, as MMSE is insensitive to subtle deficits).",
  "timestamp": "2025-07-25T20:12:33.767115"
}