{
  "ptid_time": "003_S_1122_2008-01-30",
  "img_path": "/data/qiuhui/data/adni/images/003_S_1122/2008-01-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,376 mm³, 31.0% below the reference mean. With a Z-score of -0.71 (23.9th percentile), this represents normal volume ; hippocampal volume measures 7,718 mm³, 8.5% above the reference mean. With a Z-score of 0.78 (78.2th percentile), this represents normal volume ; whole brain volume measures 761,406 mm³, 21.9% below the reference mean. With a Z-score of -2.75 (0.3th percentile), this represents significant atrophy; entorhinal cortex volume measures 3,035 mm³, 17.4% below the reference mean. With a Z-score of -1.07 (14.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 10,630 mm³, 37.5% below the reference mean. With a Z-score of -3.41 (0.0th percentile), this represents profound atrophy; middle temporal gyrus volume measures 15,627 mm³, 18.5% below the reference mean. With a Z-score of -1.60 (5.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 77.6 years. Gender is Female. Education: 14 years. Handedness: Unknown. Race: Unknown. MMSE: 29.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows significant atrophy in whole brain volume (Z-score -2.75, 0.3rd percentile) and profound atrophy in the fusiform gyrus (Z-score -3.41, 0.0th percentile), along with moderate atrophy in the middle temporal gyrus and mild atrophy in the entorhinal cortex. However, hippocampal volume is normal (Z-score 0.78, 78.2nd percentile), and the MMSE score of 29 is within the normal range, suggesting preserved cognitive function despite structural changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (structural atrophy without significant cognitive decline)  \n**Confidence:** **Medium** (due to the discrepancy between imaging findings and preserved MMSE, though atrophy patterns are concerning for early neurodegenerative changes).",
  "timestamp": "2025-07-25T20:45:48.747061"
}