{
  "ptid_time": "011_S_4278_2012-10-25",
  "img_path": "/data/qiuhui/data/adni/images/011_S_4278/2012-10-25/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 59,782 mm³, 55.2% above the reference mean. With a Z-score of 1.32 (90.7th percentile), this represents mild enlargement; hippocampal volume measures 6,034 mm³, 20.2% below the reference mean. With a Z-score of -1.97 (2.5th percentile), this represents moderate atrophy; whole brain volume measures 1,040,770 mm³, 3.6% below the reference mean. With a Z-score of -0.46 (32.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,632 mm³, 11.4% below the reference mean. With a Z-score of -0.77 (21.9th percentile), this represents normal volume ; fusiform gyrus volume measures 21,292 mm³, 13.0% above the reference mean. With a Z-score of 1.11 (86.6th percentile), this represents mild enlargement; middle temporal gyrus volume measures 20,885 mm³, 2.1% below the reference mean. With a Z-score of -0.19 (42.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.0 years. Gender is Male. Education: 14 years. MMSE: 28.0. MoCA: 19.0. Logical Memory: 7.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate hippocampal atrophy (Z-score -1.97, 2.5th percentile) and mild ventricular enlargement, both suggestive of neurodegeneration. Despite a normal MMSE (28), the low MoCA (19) indicates cognitive impairment, particularly in executive function and memory, aligning with structural changes.  \nDiagnosis: **Mild Cognitive Impairment (MCI)**  \nConfidence: **High**  \n\n(Key findings: Hippocampal atrophy + MoCA <26 strongly suggests MCI. APOE4 carrier status and age increase risk, but preserved MMSE and lack of severe global atrophy argue against dementia at this stage.)",
  "timestamp": "2025-07-25T22:57:09.017186"
}