{
  "ptid_time": "024_S_4158_2012-08-20",
  "img_path": "/data/qiuhui/data/adni/images/024_S_4158/2012-08-20/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,478 mm³, 24.5% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; hippocampal volume measures 6,175 mm³, 11.4% below the reference mean. With a Z-score of -0.98 (16.3th percentile), this represents normal volume ; whole brain volume measures 962,053 mm³, 6.5% below the reference mean. With a Z-score of -0.85 (19.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,585 mm³, 9.7% below the reference mean. With a Z-score of -0.63 (26.3th percentile), this represents normal volume ; fusiform gyrus volume measures 16,882 mm³, 6.6% below the reference mean. With a Z-score of -0.57 (28.5th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,306 mm³, 14.2% below the reference mean. With a Z-score of -1.27 (10.1th percentile), this represents mild atrophy. ",
  "text_data": "Age is 85.3 years. Gender is Male. Education: 18 years. MMSE: 28.0. MoCA: 24.0. Logical Memory: 19.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are mostly within normal ranges, with only mild atrophy noted in the middle temporal gyrus. Cognitive scores (MMSE 28, MoCA 24) are borderline for mild cognitive impairment (MCI), but the absence of significant atrophy or APOE4 risk allele suggests a less severe diagnosis.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to borderline MoCA score but otherwise normal structural and genetic findings)",
  "timestamp": "2025-07-26T03:18:28.921289"
}