{
  "ptid_time": "127_S_5132_2019-05-13",
  "img_path": "/data/qiuhui/data/adni/images/127_S_5132/2019-05-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,172 mm³, 24.6% below the reference mean. With a Z-score of -0.56 (28.7th percentile), this represents normal volume ; hippocampal volume measures 7,498 mm³, 5.4% above the reference mean. With a Z-score of 0.49 (68.9th percentile), this represents normal volume ; whole brain volume measures 989,258 mm³, 1.5% above the reference mean. With a Z-score of 0.19 (57.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,035 mm³, 9.9% above the reference mean. With a Z-score of 0.61 (72.7th percentile), this represents normal volume ; fusiform gyrus volume measures 19,848 mm³, 16.7% above the reference mean. With a Z-score of 1.52 (93.5th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 19,693 mm³, 2.7% above the reference mean. With a Z-score of 0.24 (59.4th percentile), this represents normal volume . ",
  "text_data": "Age is 75.3 years. Gender is Female. Education: 12 years. MMSE: 30.0. Logical Memory: 9.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.26 SUVR (mild elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, middle temporal gyrus) are within normal ranges or above the reference mean, with no significant atrophy. The MMSE score of 30 indicates intact cognitive function, and the absence of APOE4 reduces genetic risk. Mild AV45 elevation alone is insufficient for diagnosis without corroborating cognitive or structural deficits.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T13:26:46.792502"
}