{
  "ptid_time": "035_S_0156_2008-02-07",
  "img_path": "/data/qiuhui/data/adni/images/035_S_0156/2008-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 60,768 mm³, 57.8% above the reference mean. With a Z-score of 1.38 (91.7th percentile), this represents mild enlargement; hippocampal volume measures 7,263 mm³, 3.9% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume ; whole brain volume measures 1,016,160 mm³, 5.9% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume ; entorhinal cortex volume measures 3,896 mm³, 5.0% below the reference mean. With a Z-score of -0.34 (36.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,218 mm³, 13.9% below the reference mean. With a Z-score of -1.18 (11.8th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,525 mm³, 17.9% below the reference mean. With a Z-score of -1.61 (5.4th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 76.1 years. Gender is Male. Education: 17 years. MMSE: 30.0. Logical Memory: 16.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular enlargement and moderate atrophy in the middle temporal gyrus, along with mild atrophy in the fusiform gyrus, which are regions often affected in neurodegenerative diseases. However, hippocampal and entorhinal cortex volumes are within normal limits, and the MMSE score of 30 is intact, with no reported cognitive complaints.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (While structural changes are present, the lack of cognitive impairment and normal hippocampal volume suggest no current dementia or MCI. However, the atrophy in temporal regions may warrant monitoring for future decline.)",
  "timestamp": "2025-07-26T05:43:24.565064"
}