{
  "ptid_time": "031_S_4194_2012-09-24",
  "img_path": "/data/qiuhui/data/adni/images/031_S_4194/2012-09-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,986 mm³, 56.8% below the reference mean. With a Z-score of -1.35 (8.9th percentile), this represents mild atrophy; whole brain volume measures 1,085,190 mm³, 4.3% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,476 mm³, 5.0% above the reference mean. With a Z-score of 0.35 (63.5th percentile), this represents normal volume ; fusiform gyrus volume measures 15,839 mm³, 20.4% below the reference mean. With a Z-score of -1.70 (4.5th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 18,511 mm³, 17.4% below the reference mean. With a Z-score of -1.43 (7.6th percentile), this represents mild atrophy. ",
  "text_data": "Age is 63.0 years. Gender is Male. Education: 16 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The imaging shows mild to moderate atrophy in specific regions (ventricular volume, fusiform gyrus, middle temporal gyrus), but whole brain and entorhinal cortex volumes are normal. Cognitive scores (MMSE 30, MoCA 27) are within normal limits, and there is no APOE4 risk allele. The atrophy may reflect early neurodegenerative changes, but clinical cognition is preserved.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to regional atrophy but intact cognition and no genetic risk)",
  "timestamp": "2025-07-26T04:47:35.429077"
}