{
  "ptid_time": "137_S_0158_2006-10-17",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0158/2006-10-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,795 mm³, 65.4% below the reference mean. With a Z-score of -1.77 (3.9th percentile), this represents moderate atrophy; hippocampal volume measures 6,072 mm³, 6.5% below the reference mean. With a Z-score of -0.52 (30.1th percentile), this represents normal volume ; whole brain volume measures 860,676 mm³, 7.3% below the reference mean. With a Z-score of -0.87 (19.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,777 mm³, 9.1% above the reference mean. With a Z-score of 0.49 (68.8th percentile), this represents normal volume ; fusiform gyrus volume measures 15,277 mm³, 5.2% below the reference mean. With a Z-score of -0.39 (34.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,577 mm³, 8.1% below the reference mean. With a Z-score of -0.72 (23.7th percentile), this represents normal volume . ",
  "text_data": "Age is 80.9 years. Gender is Female. Education: 13 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate ventricular enlargement (indicating some atrophy), but hippocampal and other regional volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (Moderate ventricular atrophy could suggest early changes, but no cognitive impairment or significant structural deficits are present.)",
  "timestamp": "2025-07-26T16:06:58.353368"
}