{
  "ptid_time": "027_S_1045_2008-05-21",
  "img_path": "/data/qiuhui/data/adni/images/027_S_1045/2008-05-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 33,752 mm³, 8.7% below the reference mean. With a Z-score of -0.23 (40.7th percentile), this represents normal volume ; hippocampal volume measures 5,314 mm³, 18.2% below the reference mean. With a Z-score of -1.46 (7.3th percentile), this represents mild atrophy; whole brain volume measures 922,609 mm³, 0.6% below the reference mean. With a Z-score of -0.07 (47.1th percentile), this represents normal volume ; entorhinal cortex volume measures 2,506 mm³, 27.6% below the reference mean. With a Z-score of -1.49 (6.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,491 mm³, 3.8% below the reference mean. With a Z-score of -0.29 (38.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,996 mm³, 5.7% below the reference mean. With a Z-score of -0.51 (30.5th percentile), this represents normal volume . ",
  "text_data": "Age is 84.1 years. Gender is Female. Education: 14 years. MMSE: 29.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal and entorhinal cortex volumes show mild atrophy (Z-scores of -1.46 and -1.49, respectively), which are early markers of Alzheimer's pathology. However, the MMSE score of 29 is within the normal range, and there is no APOE4 risk allele, suggesting preserved cognitive function despite structural changes.  \nDiagnosis: **MCI (Mild Cognitive Impairment)**  \nConfidence: **Medium** (due to the discrepancy between structural atrophy and intact cognition, though atrophy in key regions raises concern for early neurodegenerative changes)",
  "timestamp": "2025-07-26T03:44:20.159620"
}