{
  "ptid_time": "002_S_6009_2017-04-17",
  "img_path": "/data/qiuhui/data/adni/images/002_S_6009/2017-04-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,469 mm³, 11.8% below the reference mean. With a Z-score of -0.28 (38.9th percentile), this represents normal volume ; hippocampal volume measures 8,888 mm³, 10.7% above the reference mean. With a Z-score of 1.07 (85.8th percentile), this represents mild enlargement; whole brain volume measures 1,130,290 mm³, 0.4% below the reference mean. With a Z-score of -0.05 (47.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,981 mm³, 16.8% above the reference mean. With a Z-score of 1.17 (87.8th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,619 mm³, 6.5% below the reference mean. With a Z-score of -0.54 (29.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,238 mm³, 3.7% above the reference mean. With a Z-score of 0.30 (61.9th percentile), this represents normal volume . ",
  "text_data": "Age is 67.5 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. MMSE: 29.0. MoCA: 28.0. Logical Memory: 10.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or show mild enlargement (hippocampus, entorhinal cortex), with no significant atrophy. Cognitive scores (MMSE 29, MoCA 28) are intact, and amyloid PET (AV45) is normal. APOE4 carrier status alone does not indicate pathology without other biomarkers.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:35:57.520991"
}