{
  "ptid_time": "141_S_4232_2012-06-05",
  "img_path": "/data/qiuhui/data/adni/images/141_S_4232/2012-06-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,411 mm³, 52.2% below the reference mean. With a Z-score of -1.25 (10.6th percentile), this represents mild atrophy; hippocampal volume measures 7,563 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.2th percentile), this represents normal volume ; whole brain volume measures 1,064,030 mm³, 1.4% below the reference mean. With a Z-score of -0.18 (42.7th percentile), this represents normal volume ; entorhinal cortex volume measures 4,215 mm³, 2.8% above the reference mean. With a Z-score of 0.19 (57.5th percentile), this represents normal volume ; fusiform gyrus volume measures 18,793 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,978 mm³, 6.4% below the reference mean. With a Z-score of -0.57 (28.3th percentile), this represents normal volume . ",
  "text_data": "Age is 74.7 years. Gender is Male. Education: 16 years. MMSE: 29.0. MoCA: 27.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal structures. Cognitive scores (MMSE 29, MoCA 27) are within normal limits, and there is no APOE4 genetic risk factor.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:02:59.728754"
}