{
  "ptid_time": "009_S_5147_2014-05-12",
  "img_path": "/data/qiuhui/data/adni/images/009_S_5147/2014-05-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,753 mm³, 43.5% below the reference mean. With a Z-score of -1.04 (14.9th percentile), this represents mild atrophy; hippocampal volume measures 7,242 mm³, 4.2% below the reference mean. With a Z-score of -0.41 (34.1th percentile), this represents normal volume ; whole brain volume measures 1,066,730 mm³, 1.2% below the reference mean. With a Z-score of -0.15 (43.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,580 mm³, 12.7% below the reference mean. With a Z-score of -0.86 (19.5th percentile), this represents normal volume ; fusiform gyrus volume measures 19,546 mm³, 3.8% above the reference mean. With a Z-score of 0.32 (62.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,954 mm³, 7.6% above the reference mean. With a Z-score of 0.68 (75.2th percentile), this represents normal volume . ",
  "text_data": "Age is 77.5 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement (mild atrophy) but otherwise normal volumes in key regions like the hippocampus, entorhinal cortex, and temporal lobes. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 genetic risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T22:27:22.404883"
}