{
  "ptid_time": "941_S_6496_2018-07-17",
  "img_path": "/data/qiuhui/data/adni/images/941_S_6496/2018-07-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 55,872 mm³, 18.8% above the reference mean. With a Z-score of 0.55 (70.8th percentile), this represents normal volume ; hippocampal volume measures 7,048 mm³, 1.2% above the reference mean. With a Z-score of 0.10 (54.0th percentile), this represents normal volume ; whole brain volume measures 993,785 mm³, 3.4% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume ; entorhinal cortex volume measures 4,995 mm³, 25.8% above the reference mean. With a Z-score of 1.69 (95.5th percentile), this represents moderate enlargement; fusiform gyrus volume measures 20,187 mm³, 11.7% above the reference mean. With a Z-score of 1.02 (84.5th percentile), this represents mild enlargement; middle temporal gyrus volume measures 19,738 mm³, 2.2% below the reference mean. With a Z-score of -0.19 (42.4th percentile), this represents normal volume . ",
  "text_data": "Age is 84.6 years. Gender is Male. Education: 19 years. Handedness: Left. Race: White. MMSE: 27.0. MoCA: 24.0. Logical Memory: 13.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild to moderate enlargement noted in the entorhinal cortex and fusiform gyrus. Cognitive scores (MMSE 27, MoCA 24) are slightly below optimal but still within the normal range for age, suggesting no significant cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline cognitive scores but structurally normal brain volumes)",
  "timestamp": "2025-07-26T17:48:43.727653"
}