{
  "ptid_time": "135_S_4446_2017-06-13",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4446/2017-06-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,516 mm³, 26.9% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; hippocampal volume measures 6,552 mm³, 7.9% below the reference mean. With a Z-score of -0.73 (23.4th percentile), this represents normal volume ; whole brain volume measures 948,968 mm³, 2.6% below the reference mean. With a Z-score of -0.33 (37.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,713 mm³, 1.1% above the reference mean. With a Z-score of 0.07 (52.7th percentile), this represents normal volume ; fusiform gyrus volume measures 21,565 mm³, 26.8% above the reference mean. With a Z-score of 2.44 (99.3th percentile), this represents significant enlargement; middle temporal gyrus volume measures 18,076 mm³, 5.7% below the reference mean. With a Z-score of -0.50 (31.0th percentile), this represents normal volume . ",
  "text_data": "Age is 73.9 years. Gender is Female. Education: 15 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with only the fusiform gyrus showing significant enlargement (Z-score 2.44). Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and amyloid PET (AV45) is normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:36:34.990962"
}