{
  "ptid_time": "127_S_4210_2019-10-10",
  "img_path": "/data/qiuhui/data/adni/images/127_S_4210/2019-10-10/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 16,218 mm³, 57.9% below the reference mean. With a Z-score of -1.39 (8.3th percentile), this represents mild atrophy; hippocampal volume measures 9,111 mm³, 20.5% above the reference mean. With a Z-score of 2.00 (97.7th percentile), this represents significant enlargement; whole brain volume measures 1,188,210 mm³, 10.1% above the reference mean. With a Z-score of 1.31 (90.5th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,083 mm³, 24.0% above the reference mean. With a Z-score of 1.62 (94.8th percentile), this represents moderate enlargement; fusiform gyrus volume measures 22,680 mm³, 20.4% above the reference mean. With a Z-score of 1.74 (95.9th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 20,562 mm³, 3.6% below the reference mean. With a Z-score of -0.33 (37.2th percentile), this represents normal volume . ",
  "text_data": "Age is 71.9 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 26.0. Logical Memory: 8.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The imaging data shows mild ventricular atrophy but otherwise reveals above-average volumes in the hippocampus, whole brain, entorhinal cortex, and fusiform gyrus, which are atypical for Alzheimer's. Cognitive scores (MMSE 29, MoCA 26) are within normal limits, and amyloid PET (AV45) is normal, ruling out significant amyloid pathology.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T13:16:57.569589"
}