{
  "ptid_time": "052_S_5062_2014-04-22",
  "img_path": "/data/qiuhui/data/adni/images/052_S_5062/2014-04-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,858 mm³, 27.8% above the reference mean. With a Z-score of 0.64 (73.7th percentile), this represents normal volume ; hippocampal volume measures 5,627 mm³, 20.9% below the reference mean. With a Z-score of -1.92 (2.8th percentile), this represents moderate atrophy; whole brain volume measures 906,428 mm³, 7.0% below the reference mean. With a Z-score of -0.88 (18.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,383 mm³, 7.9% below the reference mean. With a Z-score of -0.48 (31.4th percentile), this represents normal volume ; fusiform gyrus volume measures 13,181 mm³, 22.5% below the reference mean. With a Z-score of -2.05 (2.0th percentile), this represents significant atrophy; middle temporal gyrus volume measures 15,874 mm³, 17.2% below the reference mean. With a Z-score of -1.49 (6.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 72.0 years. Gender is Female. Education: 14 years. MMSE: 22.0. MoCA: 8.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The patient shows significant hippocampal and fusiform gyrus atrophy (Z-scores -1.92 and -2.05, respectively), which are strongly associated with Alzheimer's pathology. The MMSE (22) and MoCA (8) scores indicate cognitive impairment, and the presence of an APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **Dementia** (likely Alzheimer’s disease)  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T07:53:00.780071"
}