{
  "ptid_time": "941_S_4292_2017-08-21",
  "img_path": "/data/qiuhui/data/adni/images/941_S_4292/2017-08-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,254 mm³, 18.9% below the reference mean. With a Z-score of -0.45 (32.6th percentile), this represents normal volume ; hippocampal volume measures 7,304 mm³, 3.4% below the reference mean. With a Z-score of -0.33 (37.1th percentile), this represents normal volume ; whole brain volume measures 1,012,610 mm³, 6.2% below the reference mean. With a Z-score of -0.80 (21.1th percentile), this represents normal volume ; entorhinal cortex volume measures 3,751 mm³, 8.5% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume ; fusiform gyrus volume measures 16,609 mm³, 11.8% below the reference mean. With a Z-score of -1.01 (15.7th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,054 mm³, 6.0% below the reference mean. With a Z-score of -0.54 (29.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.4 years. Gender is Male. Education: 15 years. MMSE: 30.0. MoCA: 26.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.10 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with only mild atrophy in the fusiform gyrus. Cognitive scores (MMSE 30, MoCA 26) are within normal limits, and amyloid PET (AV45) is normal. No significant hippocampal or entorhinal atrophy is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T17:37:56.841901"
}