{
  "ptid_time": "137_S_0158_2009-03-24",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0158/2009-03-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 14,237 mm³, 61.5% below the reference mean. With a Z-score of -1.66 (4.8th percentile), this represents moderate atrophy; hippocampal volume measures 5,917 mm³, 8.9% below the reference mean. With a Z-score of -0.71 (23.8th percentile), this represents normal volume ; whole brain volume measures 865,634 mm³, 6.7% below the reference mean. With a Z-score of -0.81 (20.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,068 mm³, 17.5% above the reference mean. With a Z-score of 0.94 (82.7th percentile), this represents normal volume ; fusiform gyrus volume measures 15,445 mm³, 4.1% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 15,906 mm³, 11.8% below the reference mean. With a Z-score of -1.05 (14.7th percentile), this represents mild atrophy. ",
  "text_data": "Age is 83.4 years. Gender is Female. Education: 13 years. MMSE: 30.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The patient shows moderate ventricular atrophy and mild middle temporal gyrus atrophy, but hippocampal and whole brain volumes are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to some atrophy but preserved cognitive function and no genetic risk)",
  "timestamp": "2025-07-26T16:07:25.567059"
}