{
  "ptid_time": "037_S_4410_2012-12-19",
  "img_path": "/data/qiuhui/data/adni/images/037_S_4410/2012-12-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,588 mm³, 44.5% below the reference mean. With a Z-score of -1.02 (15.4th percentile), this represents mild atrophy; hippocampal volume measures 6,155 mm³, 13.5% below the reference mean. With a Z-score of -1.24 (10.8th percentile), this represents mild atrophy; whole brain volume measures 966,354 mm³, 0.9% below the reference mean. With a Z-score of -0.11 (45.7th percentile), this represents normal volume ; entorhinal cortex volume measures 2,970 mm³, 19.1% below the reference mean. With a Z-score of -1.17 (12.0th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,015 mm³, 5.9% above the reference mean. With a Z-score of 0.54 (70.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,802 mm³, 1.9% below the reference mean. With a Z-score of -0.17 (43.4th percentile), this represents normal volume . ",
  "text_data": "Age is 70.1 years. Gender is Female. Education: 14 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild atrophy in the hippocampus, entorhinal cortex, and ventricles, which are regions commonly affected in early Alzheimer's disease. However, cognitive scores (MMSE 28, MoCA 26) are within normal limits, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** Cognitively Normal (CN)  \n**Confidence:** Medium (due to mild atrophy but preserved cognition and lack of APOE4)",
  "timestamp": "2025-07-26T06:46:19.960630"
}