{
  "ptid_time": "003_S_4644_2017-06-21",
  "img_path": "/data/qiuhui/data/adni/images/003_S_4644/2017-06-21/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 25,217 mm³, 10.2% below the reference mean. With a Z-score of -0.23 (40.8th percentile), this represents normal volume ; hippocampal volume measures 7,461 mm³, 4.9% above the reference mean. With a Z-score of 0.45 (67.2th percentile), this represents normal volume ; whole brain volume measures 1,001,210 mm³, 2.7% above the reference mean. With a Z-score of 0.34 (63.4th percentile), this represents normal volume ; entorhinal cortex volume measures 4,258 mm³, 15.9% above the reference mean. With a Z-score of 0.98 (83.6th percentile), this represents normal volume ; fusiform gyrus volume measures 14,773 mm³, 13.2% below the reference mean. With a Z-score of -1.20 (11.5th percentile), this represents mild atrophy; middle temporal gyrus volume measures 20,815 mm³, 8.6% above the reference mean. With a Z-score of 0.75 (77.2th percentile), this represents normal volume . ",
  "text_data": "Age is 72.6 years. Gender is Female. Education: 14 years. MMSE: 28.0. MoCA: 27.0. Logical Memory: 12.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measures are largely within normal ranges, with only mild atrophy noted in the fusiform gyrus. Cognitive scores (MMSE 28, MoCA 27) are well within the normal range for age, and amyloid PET (AV45) is normal. The presence of one APOE4 allele does not override the absence of significant atrophy or cognitive impairment.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-25T20:55:35.246641"
}