{
  "ptid_time": "062_S_0578_2008-06-11",
  "img_path": "/data/qiuhui/data/adni/images/062_S_0578/2008-06-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 39,893 mm³, 42.1% above the reference mean. With a Z-score of 0.96 (83.3th percentile), this represents normal volume ; hippocampal volume measures 6,050 mm³, 15.0% below the reference mean. With a Z-score of -1.37 (8.5th percentile), this represents mild atrophy; whole brain volume measures 896,274 mm³, 8.0% below the reference mean. With a Z-score of -1.01 (15.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,083 mm³, 11.2% above the reference mean. With a Z-score of 0.69 (75.3th percentile), this represents normal volume ; fusiform gyrus volume measures 15,679 mm³, 7.8% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,691 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.4th percentile), this represents normal volume . ",
  "text_data": "Age is 79.0 years. Gender is Female. Education: 14 years. MMSE: 28.0. Logical Memory: 10.0. Laboratory findings: . APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows mild atrophy (Z-score -1.37, 8.5th percentile), while whole brain volume also indicates mild atrophy (Z-score -1.01, 15.6th percentile). However, the MMSE score of 28 is within the normal range, and there is no significant atrophy in other key regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus).  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to hippocampal atrophy but preserved cognitive function on MMSE and no APOE4 risk allele)",
  "timestamp": "2025-07-26T08:16:54.809957"
}