{
  "ptid_time": "135_S_4723_2014-06-17",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4723/2014-06-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 9,936 mm³, 64.6% below the reference mean. With a Z-score of -1.48 (7.0th percentile), this represents mild atrophy; hippocampal volume measures 7,655 mm³, 7.6% above the reference mean. With a Z-score of 0.70 (75.7th percentile), this represents normal volume ; whole brain volume measures 1,036,530 mm³, 6.3% above the reference mean. With a Z-score of 0.80 (78.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,062 mm³, 10.6% above the reference mean. With a Z-score of 0.65 (74.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,283 mm³, 4.3% below the reference mean. With a Z-score of -0.39 (34.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,685 mm³, 2.5% below the reference mean. With a Z-score of -0.22 (41.3th percentile), this represents normal volume . ",
  "text_data": "Age is 71.4 years. Gender is Female. Education: 18 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal volumes in key regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 29) are intact, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:45:43.651728"
}