{
  "ptid_time": "068_S_0401_2008-07-29",
  "img_path": "/data/qiuhui/data/adni/images/068_S_0401/2008-07-29/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 46,369 mm³, 54.4% above the reference mean. With a Z-score of 1.29 (90.2th percentile), this represents mild enlargement; hippocampal volume measures 7,467 mm³, 7.0% below the reference mean. With a Z-score of -0.70 (24.3th percentile), this represents normal volume ; whole brain volume measures 1,243,750 mm³, 9.6% above the reference mean. With a Z-score of 1.36 (91.3th percentile), this represents mild enlargement; entorhinal cortex volume measures 4,190 mm³, 1.7% below the reference mean. With a Z-score of -0.12 (45.3th percentile), this represents normal volume ; fusiform gyrus volume measures 17,179 mm³, 13.7% below the reference mean. With a Z-score of -1.14 (12.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 26,197 mm³, 16.9% above the reference mean. With a Z-score of 1.39 (91.8th percentile), this represents mild enlargement. ",
  "text_data": "Age is 65.9 years. Gender is Male. Education: 17 years. MMSE: 29.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes are within normal ranges, and the MMSE score of 29 is intact, suggesting no significant cognitive impairment. However, mild fusiform gyrus atrophy and ventricular enlargement may indicate early neurodegenerative changes, though not yet clinically significant.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mixed structural findings but preserved cognition)",
  "timestamp": "2025-07-26T08:47:24.397384"
}