{
  "ptid_time": "068_S_0127_2010-04-19",
  "img_path": "/data/qiuhui/data/adni/images/068_S_0127/2010-04-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 42,565 mm³, 10.5% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; hippocampal volume measures 6,901 mm³, 8.7% below the reference mean. With a Z-score of -0.85 (19.8th percentile), this represents normal volume ; whole brain volume measures 919,265 mm³, 14.8% below the reference mean. With a Z-score of -1.93 (2.7th percentile), this represents moderate atrophy; entorhinal cortex volume measures 4,919 mm³, 20.0% above the reference mean. With a Z-score of 1.35 (91.2th percentile), this represents mild enlargement; fusiform gyrus volume measures 17,801 mm³, 5.5% below the reference mean. With a Z-score of -0.47 (32.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,482 mm³, 8.7% below the reference mean. With a Z-score of -0.78 (21.7th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Male. Education: 17 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate whole brain atrophy (Z-score -1.93, 2.7th percentile) but normal hippocampal volume (Z-score -0.85, 19.8th percentile) and no significant atrophy in other key regions. The MMSE score of 30 is intact, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to whole brain atrophy but preserved cognition and no other strong biomarkers)",
  "timestamp": "2025-07-26T08:45:14.742495"
}