{
  "ptid_time": "126_S_0708_2006-07-17",
  "img_path": "/data/qiuhui/data/adni/images/126_S_0708/2006-07-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,026 mm³, 6.5% below the reference mean. With a Z-score of -0.15 (43.8th percentile), this represents normal volume ; hippocampal volume measures 7,186 mm³, 4.9% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; whole brain volume measures 1,181,300 mm³, 9.4% above the reference mean. With a Z-score of 1.23 (89.0th percentile), this represents mild enlargement; entorhinal cortex volume measures 3,262 mm³, 20.5% below the reference mean. With a Z-score of -1.39 (8.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 22,299 mm³, 18.4% above the reference mean. With a Z-score of 1.56 (94.1th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,883 mm³, 6.8% below the reference mean. With a Z-score of -0.61 (27.0th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Male. Education: 16 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Cardiovascular; Hepatic; Musculoskeletal. MMSE: 29.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The entorhinal cortex shows mild atrophy (Z-score -1.39, 8.3th percentile), which is an early marker for Alzheimer's pathology, but hippocampal and whole brain volumes are within normal ranges. The MMSE score of 29 is intact, and there are no clear cognitive deficits reported.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (Atrophy in the entorhinal cortex raises suspicion, but preserved hippocampal volume and normal MMSE suggest no significant cognitive impairment at this stage.)",
  "timestamp": "2025-07-26T12:38:22.271605"
}