{
  "ptid_time": "114_S_6487_2018-09-21",
  "img_path": "/data/qiuhui/data/adni/images/114_S_6487/2018-09-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,461 mm³, 15.2% below the reference mean. With a Z-score of -0.36 (35.9th percentile), this represents normal volume ; hippocampal volume measures 7,197 mm³, 10.3% below the reference mean. With a Z-score of -1.03 (15.1th percentile), this represents mild atrophy; whole brain volume measures 1,103,830 mm³, 2.7% below the reference mean. With a Z-score of -0.38 (35.1th percentile), this represents normal volume ; entorhinal cortex volume measures 4,493 mm³, 5.4% above the reference mean. With a Z-score of 0.37 (64.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,402 mm³, 7.6% below the reference mean. With a Z-score of -0.63 (26.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,924 mm³, 6.7% above the reference mean. With a Z-score of 0.56 (71.1th percentile), this represents normal volume . ",
  "text_data": "Age is 68.3 years. Gender is Male. Education: 20 years. MMSE: 29.0. MoCA: 30.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.02 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows mild atrophy (Z-score -1.03, 15.1th percentile), but all other brain volumes are within normal ranges. Cognitive scores (MMSE 29, MoCA 30) are intact, and amyloid PET (AV45) is normal. No APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T11:50:17.789529"
}