{
  "ptid_time": "135_S_6446_2019-07-11",
  "img_path": "/data/qiuhui/data/adni/images/135_S_6446/2019-07-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,305 mm³, 35.7% below the reference mean. With a Z-score of -0.85 (19.8th percentile), this represents normal volume ; hippocampal volume measures 7,632 mm³, 4.9% below the reference mean. With a Z-score of -0.49 (31.2th percentile), this represents normal volume ; whole brain volume measures 1,053,560 mm³, 7.1% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,018 mm³, 5.7% below the reference mean. With a Z-score of -0.40 (34.5th percentile), this represents normal volume ; fusiform gyrus volume measures 16,343 mm³, 17.9% below the reference mean. With a Z-score of -1.49 (6.8th percentile), this represents mild atrophy; middle temporal gyrus volume measures 22,637 mm³, 1.0% above the reference mean. With a Z-score of 0.08 (53.3th percentile), this represents normal volume . ",
  "text_data": "Age is 62.5 years. Gender is Male. Education: 12 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild atrophy in the whole brain and fusiform gyrus, but other regions (hippocampus, entorhinal cortex, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 29, MoCA 26) are borderline for MCI but still within normal limits for age. No APOE4 allele increases the likelihood of non-Alzheimer’s pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA and mild atrophy in some regions, but no clear cognitive impairment)",
  "timestamp": "2025-07-26T15:51:38.664428"
}