{
  "ptid_time": "036_S_6088_2018-12-05",
  "img_path": "/data/qiuhui/data/adni/images/036_S_6088/2018-12-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,885 mm³, 39.8% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; hippocampal volume measures 6,543 mm³, 8.0% below the reference mean. With a Z-score of -0.74 (23.0th percentile), this represents normal volume ; whole brain volume measures 894,490 mm³, 8.2% below the reference mean. With a Z-score of -1.04 (15.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,458 mm³, 5.9% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; fusiform gyrus volume measures 19,881 mm³, 16.9% above the reference mean. With a Z-score of 1.53 (93.8th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 15,440 mm³, 19.5% below the reference mean. With a Z-score of -1.69 (4.6th percentile), this represents moderate atrophy. ",
  "text_data": "Age is 70.2 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild whole-brain atrophy and moderate atrophy in the middle temporal gyrus, but hippocampal and entorhinal cortex volumes are within normal ranges. Cognitive scores (MMSE, MoCA) are intact, and there is no clinical evidence of impairment. The presence of an APOE4 allele increases Alzheimer's risk but does not confirm pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mixed imaging findings but preserved cognition)",
  "timestamp": "2025-07-26T06:21:57.650453"
}