{
  "ptid_time": "021_S_5194_2019-07-23",
  "img_path": "/data/qiuhui/data/adni/images/021_S_5194/2019-07-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,779 mm³, 26.0% below the reference mean. With a Z-score of -0.59 (27.6th percentile), this represents normal volume ; hippocampal volume measures 7,379 mm³, 3.7% above the reference mean. With a Z-score of 0.34 (63.3th percentile), this represents normal volume ; whole brain volume measures 954,597 mm³, 2.1% below the reference mean. With a Z-score of -0.26 (39.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,045 mm³, 10.1% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; fusiform gyrus volume measures 15,057 mm³, 11.5% below the reference mean. With a Z-score of -1.05 (14.8th percentile), this represents mild atrophy; middle temporal gyrus volume measures 17,380 mm³, 9.3% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume . ",
  "text_data": "Age is 71.2 years. Gender is Female. Education: 18 years. MMSE: 29.0. MoCA: 30.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.10 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 test scores (MMSE 29, MoCA 30) are excellent, and amyloid PET (AV45) is normal. No significant structural or biomarker evidence of neurodegeneration.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:55:10.138165"
}