{
  "ptid_time": "123_S_1300_2010-03-31",
  "img_path": "/data/qiuhui/data/adni/images/123_S_1300/2010-03-31/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 63,812 mm³, 127.3% above the reference mean. With a Z-score of 2.92 (99.8th percentile), this represents significant enlargement; hippocampal volume measures 6,133 mm³, 13.8% below the reference mean. With a Z-score of -1.27 (10.3th percentile), this represents mild atrophy; whole brain volume measures 937,279 mm³, 3.8% below the reference mean. With a Z-score of -0.48 (31.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,625 mm³, 1.3% below the reference mean. With a Z-score of -0.08 (46.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,932 mm³, 0.5% below the reference mean. With a Z-score of -0.04 (48.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,694 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.5th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Female. Education: 12 years. MMSE: 30.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant ventricular enlargement (Z-score 2.92) and mild hippocampal atrophy (Z-score -1.27), which are concerning for neurodegenerative changes. However, cognitive testing (MMSE 30) is normal, and other brain regions are within normal limits, suggesting no current functional impairment.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (structural changes present but no cognitive decline yet)  \n**Confidence:** **Medium** (ventricular enlargement and hippocampal atrophy are red flags, but normal MMSE and lack of APOE4 reduce certainty of progression to dementia).",
  "timestamp": "2025-07-26T12:28:41.709657"
}