{
  "ptid_time": "109_S_4380_2018-03-12",
  "img_path": "/data/qiuhui/data/adni/images/109_S_4380/2018-03-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,086 mm³, 6.7% above the reference mean. With a Z-score of 0.16 (56.3th percentile), this represents normal volume ; hippocampal volume measures 7,908 mm³, 4.6% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; whole brain volume measures 1,053,240 mm³, 2.4% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; entorhinal cortex volume measures 5,065 mm³, 23.5% above the reference mean. With a Z-score of 1.59 (94.5th percentile), this represents moderate enlargement; fusiform gyrus volume measures 21,342 mm³, 13.3% above the reference mean. With a Z-score of 1.13 (87.1th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,458 mm³, 4.1% below the reference mean. With a Z-score of -0.37 (35.5th percentile), this represents normal volume . ",
  "text_data": "Age is 77.8 years. Gender is Male. Education: 17 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, middle temporal gyrus) are within normal ranges, with some regions (entorhinal cortex, fusiform gyrus) showing mild to moderate enlargement. Cognitive scores (MMSE 28, MoCA 26) are within normal limits for age, and APOE4-negative status further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:33:18.327637"
}