{
  "ptid_time": "006_S_4357_2012-12-04",
  "img_path": "/data/qiuhui/data/adni/images/006_S_4357/2012-12-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,576 mm³, 51.6% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy; hippocampal volume measures 7,527 mm³, 5.8% above the reference mean. With a Z-score of 0.53 (70.3th percentile), this represents normal volume ; whole brain volume measures 914,913 mm³, 6.1% below the reference mean. With a Z-score of -0.77 (22.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,324 mm³, 9.5% below the reference mean. With a Z-score of -0.58 (28.0th percentile), this represents normal volume ; fusiform gyrus volume measures 16,871 mm³, 0.8% below the reference mean. With a Z-score of -0.08 (47.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,334 mm³, 14.8% below the reference mean. With a Z-score of -1.28 (10.0th percentile), this represents mild atrophy. ",
  "text_data": "Age is 74.7 years. Gender is Female. Education: 16 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 23.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild atrophy in the ventricular volume and middle temporal gyrus, but other key regions (hippocampus, entorhinal cortex, fusiform gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 risk allele.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-25T21:36:53.585757"
}