{
  "ptid_time": "136_S_1227_2009-03-23",
  "img_path": "/data/qiuhui/data/adni/images/136_S_1227/2009-03-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,953 mm³, 15.1% below the reference mean. With a Z-score of -0.38 (35.2th percentile), this represents normal volume ; hippocampal volume measures 7,250 mm³, 5.7% below the reference mean. With a Z-score of -0.63 (26.3th percentile), this represents normal volume ; whole brain volume measures 918,138 mm³, 10.8% below the reference mean. With a Z-score of -1.34 (9.0th percentile), this represents mild atrophy; entorhinal cortex volume measures 4,108 mm³, 5.5% above the reference mean. With a Z-score of 0.43 (66.6th percentile), this represents normal volume ; fusiform gyrus volume measures 15,115 mm³, 17.0% below the reference mean. With a Z-score of -1.91 (2.8th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 19,657 mm³, 4.2% below the reference mean. With a Z-score of -0.37 (35.4th percentile), this represents normal volume . ",
  "text_data": "Age is 66.6 years. Gender is Female. Education: 12 years. MMSE: 29.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain imaging shows mild atrophy in the whole brain and moderate atrophy in the fusiform gyrus, but other regions (hippocampus, entorhinal cortex, middle temporal gyrus) are within normal ranges. The MMSE score of 29 is normal, and the absence of APOE4 reduces genetic risk. No significant cognitive impairment is indicated clinically.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (due to isolated fusiform gyrus atrophy but otherwise normal findings)",
  "timestamp": "2025-07-26T16:05:49.153741"
}