{
  "ptid_time": "036_S_0813_2007-09-27",
  "img_path": "/data/qiuhui/data/adni/images/036_S_0813/2007-09-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 24,565 mm³, 36.2% below the reference mean. With a Z-score of -0.87 (19.3th percentile), this represents normal volume ; hippocampal volume measures 7,768 mm³, 2.8% above the reference mean. With a Z-score of 0.27 (60.6th percentile), this represents normal volume ; whole brain volume measures 1,050,640 mm³, 2.7% below the reference mean. With a Z-score of -0.35 (36.5th percentile), this represents normal volume ; entorhinal cortex volume measures 3,330 mm³, 18.8% below the reference mean. With a Z-score of -1.27 (10.1th percentile), this represents mild atrophy; fusiform gyrus volume measures 14,287 mm³, 24.2% below the reference mean. With a Z-score of -2.06 (2.0th percentile), this represents significant atrophy; middle temporal gyrus volume measures 23,248 mm³, 8.9% above the reference mean. With a Z-score of 0.80 (78.9th percentile), this represents normal volume . ",
  "text_data": "Age is 73.7 years. Gender is Male. Education: 16 years. MMSE: 29.0. Logical Memory: 7.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "Reasoning: The patient shows normal volumes in most brain regions, including the hippocampus and whole brain, with only mild atrophy in the entorhinal cortex and significant atrophy in the fusiform gyrus. However, cognitive performance (MMSE 29/30) is intact, and there is no APOE4 risk allele. The isolated fusiform atrophy may suggest early neurodegeneration but is insufficient for MCI or dementia diagnosis without clinical symptoms.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to fusiform atrophy but preserved cognition and no other significant markers)",
  "timestamp": "2025-07-26T06:05:38.134732"
}