{
  "ptid_time": "072_S_4391_2013-01-14",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4391/2013-01-14/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 26,579 mm³, 31.0% below the reference mean. With a Z-score of -0.74 (22.9th percentile), this represents normal volume ; hippocampal volume measures 6,492 mm³, 14.1% below the reference mean. With a Z-score of -1.38 (8.4th percentile), this represents mild atrophy; whole brain volume measures 920,722 mm³, 14.7% below the reference mean. With a Z-score of -1.91 (2.8th percentile), this represents moderate atrophy; entorhinal cortex volume measures 3,752 mm³, 8.5% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,227 mm³, 13.9% below the reference mean. With a Z-score of -1.18 (11.9th percentile), this represents mild atrophy; middle temporal gyrus volume measures 16,850 mm³, 21.0% below the reference mean. With a Z-score of -1.89 (2.9th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 75.4 years. Gender is Male. Education: 12 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild to moderate atrophy in the hippocampus, whole brain, fusiform gyrus, and middle temporal gyrus, which are regions commonly affected in neurodegenerative disorders. However, cognitive testing (MMSE 30, MoCA 25) does not indicate significant impairment, and the absence of APOE4 reduces genetic risk.  \n**Diagnosis:** Mild Cognitive Impairment (MCI)  \n**Confidence:** Medium  \n\n*(Note: The MoCA score of 25 is borderline, and the structural changes suggest early neurodegeneration, but the preserved MMSE and lack of functional decline make dementia less likely at this stage.)*",
  "timestamp": "2025-07-26T09:21:17.584905"
}