{
  "ptid_time": "033_S_1086_2006-12-15",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1086/2006-12-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,351 mm³, 16.3% below the reference mean. With a Z-score of -0.47 (31.8th percentile), this represents normal volume ; hippocampal volume measures 6,906 mm³, 0.9% below the reference mean. With a Z-score of -0.08 (46.9th percentile), this represents normal volume ; whole brain volume measures 1,013,550 mm³, 1.5% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,874 mm³, 2.4% below the reference mean. With a Z-score of -0.16 (43.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,416 mm³, 9.1% below the reference mean. With a Z-score of -0.79 (21.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,261 mm³, 10.4% above the reference mean. With a Z-score of 0.93 (82.3th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Male. Education: 20 years. Handedness: Left. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Cardiovascular; Musculoskeletal; Renal-Genitourinary. MMSE: 29.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 29 is within the normal range (≥26), and there is no significant atrophy or structural abnormality suggestive of cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:27:38.660810"
}