{
  "ptid_time": "116_S_6517_2018-09-10",
  "img_path": "/data/qiuhui/data/adni/images/116_S_6517/2018-09-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 15,150 mm³, 32.2% below the reference mean. With a Z-score of -0.81 (21.0th percentile), this represents normal volume ; hippocampal volume measures 7,429 mm³, 3.3% below the reference mean. With a Z-score of -0.37 (35.5th percentile), this represents normal volume ; whole brain volume measures 989,164 mm³, 3.9% below the reference mean. With a Z-score of -0.48 (31.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,563 mm³, 8.5% below the reference mean. With a Z-score of -0.66 (25.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,041 mm³, 0.9% below the reference mean. With a Z-score of -0.10 (45.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,208 mm³, 16.1% below the reference mean. With a Z-score of -1.43 (7.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 69.4 years. Gender is Female. Education: 14 years. Handedness: Right. Race: More than one race. MMSE: 29.0. MoCA: 23.0. Logical Memory: 8.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 1.04 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges, with only mild atrophy noted in the middle temporal gyrus. Cognitive testing shows a high MMSE (29/30) but a borderline MoCA (23/30), which may suggest subtle cognitive changes. The absence of APOE4 reduces genetic risk for Alzheimer’s.  \n\n**Diagnosis:** **MCI (Mild Cognitive Impairment)**  \n**Confidence:** **Medium** (due to the borderline MoCA and isolated temporal atrophy, but otherwise normal volumes and high MMSE).",
  "timestamp": "2025-07-26T12:19:04.012930"
}