{
  "ptid_time": "127_S_6348_2018-07-26",
  "img_path": "/data/qiuhui/data/adni/images/127_S_6348/2018-07-26/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 9,474 mm³, 57.6% below the reference mean. With a Z-score of -1.44 (7.5th percentile), this represents mild atrophy; hippocampal volume measures 7,865 mm³, 2.3% above the reference mean. With a Z-score of 0.26 (60.4th percentile), this represents normal volume ; whole brain volume measures 1,012,070 mm³, 1.7% below the reference mean. With a Z-score of -0.21 (41.8th percentile), this represents normal volume ; entorhinal cortex volume measures 5,063 mm³, 30.1% above the reference mean. With a Z-score of 2.33 (99.0th percentile), this represents significant enlargement; fusiform gyrus volume measures 17,611 mm³, 3.3% below the reference mean. With a Z-score of -0.37 (35.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,450 mm³, 0.3% below the reference mean. With a Z-score of -0.03 (48.8th percentile), this represents normal volume . ",
  "text_data": "Age is 69.5 years. Gender is Female. Education: 18 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.96 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions like the hippocampus, whole brain, and temporal structures. The entorhinal cortex is significantly enlarged, which is unusual but not typical of Alzheimer's pathology. Cognitive scores (MMSE, MoCA) are intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:31:42.023313"
}