{
  "ptid_time": "135_S_4446_2019-07-15",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4446/2019-07-15/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,747 mm³, 19.0% below the reference mean. With a Z-score of -0.43 (33.2th percentile), this represents normal volume ; hippocampal volume measures 6,683 mm³, 6.1% below the reference mean. With a Z-score of -0.56 (28.9th percentile), this represents normal volume ; whole brain volume measures 922,168 mm³, 5.4% below the reference mean. With a Z-score of -0.68 (24.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,924 mm³, 34.1% above the reference mean. With a Z-score of 2.09 (98.2th percentile), this represents significant enlargement; fusiform gyrus volume measures 20,696 mm³, 21.6% above the reference mean. With a Z-score of 1.97 (97.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 18,181 mm³, 5.2% below the reference mean. With a Z-score of -0.45 (32.7th percentile), this represents normal volume . ",
  "text_data": "Age is 75.9 years. Gender is Female. Education: 15 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal hippocampal, ventricular, and whole brain volumes, with no significant atrophy. The entorhinal cortex and fusiform gyrus show enlargement, which is atypical for Alzheimer’s but not necessarily pathological. Cognitive scores (MMSE 28, 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": "2025-07-26T15:36:40.840926"
}