{
  "ptid_time": "024_S_2239_2018-03-20",
  "img_path": "/data/qiuhui/data/adni/images/024_S_2239/2018-03-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,070 mm³, 45.7% below the reference mean. With a Z-score of -1.23 (10.9th percentile), this represents mild atrophy; hippocampal volume measures 7,497 mm³, 15.4% above the reference mean. With a Z-score of 1.24 (89.2th percentile), this represents mild enlargement; whole brain volume measures 989,882 mm³, 6.6% above the reference mean. With a Z-score of 0.80 (78.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,202 mm³, 21.4% above the reference mean. With a Z-score of 1.15 (87.6th percentile), this represents mild enlargement; fusiform gyrus volume measures 18,988 mm³, 17.9% above the reference mean. With a Z-score of 1.34 (91.0th percentile), this represents mild enlargement; middle temporal gyrus volume measures 21,663 mm³, 20.2% above the reference mean. With a Z-score of 1.79 (96.4th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 81.0 years. Gender is Female. Education: 15 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild ventricular atrophy but otherwise normal-to-enlarged volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 29, MoCA 25) are within normal limits for age, and the presence of one APOE4 allele does not strongly indicate dementia given the absence of significant atrophy or cognitive decline.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (While brain volumes are mostly preserved, mild ventricular atrophy could warrant monitoring, but current cognitive performance does not suggest impairment.)",
  "timestamp": "2025-07-26T03:16:58.286057"
}