{
  "ptid_time": "022_S_2263_2012-02-24",
  "img_path": "/data/qiuhui/data/adni/images/022_S_2263/2012-02-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 32,037 mm³, 6.7% above the reference mean. With a Z-score of 0.16 (56.3th percentile), this represents normal volume ; hippocampal volume measures 7,304 mm³, 9.0% below the reference mean. With a Z-score of -0.90 (18.4th percentile), this represents normal volume ; whole brain volume measures 1,119,920 mm³, 1.3% below the reference mean. With a Z-score of -0.18 (42.8th percentile), this represents normal volume ; entorhinal cortex volume measures 5,366 mm³, 25.9% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement; fusiform gyrus volume measures 20,257 mm³, 1.7% above the reference mean. With a Z-score of 0.15 (55.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,628 mm³, 5.4% above the reference mean. With a Z-score of 0.45 (67.3th percentile), this represents normal volume . ",
  "text_data": "Age is 63.0 years. Gender is Male. Education: 16 years. Handedness: Left. Race: White. Medical history: Neurologic; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Respiratory; Endocrine-Metabolic; Gastrointestinal; Allergies or Drug Sensitivities; Smoking; Major Surgical Procedures. MMSE: 30.0. MoCA: 27.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean (Z-score -0.90, 18.4th percentile), but still within the normal range. The entorhinal cortex shows moderate enlargement (Z-score 1.79, 96.3rd percentile), which is atypical for Alzheimer's but not diagnostic. Cognitive scores (MMSE 30, MoCA 27) are normal, and no significant atrophy is present in other regions.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to the atypical entorhinal enlargement but otherwise normal findings)",
  "timestamp": "2025-07-26T02:14:49.151564"
}