{
  "ptid_time": "136_S_0186_2012-10-11",
  "img_path": "/data/qiuhui/data/adni/images/136_S_0186/2012-10-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 56,155 mm³, 51.9% above the reference mean. With a Z-score of 1.40 (91.9th percentile), this represents mild enlargement; hippocampal volume measures 7,648 mm³, 17.8% above the reference mean. With a Z-score of 1.42 (92.3th percentile), this represents mild enlargement; whole brain volume measures 1,049,240 mm³, 13.0% above the reference mean. With a Z-score of 1.57 (94.1th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,630 mm³, 4.8% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume ; fusiform gyrus volume measures 18,696 mm³, 16.1% above the reference mean. With a Z-score of 1.21 (88.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,077 mm³, 11.4% above the reference mean. With a Z-score of 1.01 (84.4th percentile), this represents mild enlargement. ",
  "text_data": "Age is 86.4 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The brain volume data shows mild to moderate enlargement in most regions, including the hippocampus, which is atypical for Alzheimer's disease (AD). The MMSE (29/30) and MoCA (26/30) scores are within normal limits, and the absence of APOE4 further reduces AD risk. The findings suggest preserved cognitive function and no significant atrophy.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T15:58:17.747657"
}