{
  "ptid_time": "016_S_1121_2007-07-02",
  "img_path": "/data/qiuhui/data/adni/images/016_S_1121/2007-07-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 30,591 mm³, 64.3% above the reference mean. With a Z-score of 1.84 (96.7th percentile), this represents moderate enlargement; hippocampal volume measures 6,915 mm³, 11.4% below the reference mean. With a Z-score of -1.59 (5.6th percentile), this represents moderate atrophy; whole brain volume measures 1,110,330 mm³, 6.7% above the reference mean. With a Z-score of 0.80 (78.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,066 mm³, 17.0% below the reference mean. With a Z-score of -1.33 (9.1th percentile), this represents mild atrophy; fusiform gyrus volume measures 19,670 mm³, 6.7% above the reference mean. With a Z-score of 0.61 (72.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,550 mm³, 0.1% above the reference mean. With a Z-score of 0.01 (50.3th percentile), this represents normal volume . ",
  "text_data": "Age is 56.7 years. Gender is Female. Education: 18 years. MMSE: 22.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The data shows moderate hippocampal and entorhinal cortex atrophy, which are key regions affected in Alzheimer's disease (AD). The MMSE score of 22 suggests cognitive impairment, but the absence of APOE4 and relatively preserved whole brain volume may indicate a less aggressive progression.  \n**Diagnosis:** Mild Cognitive Impairment (MCI)  \n**Confidence:** Medium (due to mixed findings—hippocampal atrophy supports MCI/AD, but normal whole brain volume and lack of APOE4 reduce certainty).",
  "timestamp": "2025-07-26T00:14:20.427341"
}