{
  "ptid_time": "133_S_0912_2007-04-18",
  "img_path": "/data/qiuhui/data/adni/images/133_S_0912/2007-04-18/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,266 mm³, 27.8% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; hippocampal volume measures 6,776 mm³, 4.8% below the reference mean. With a Z-score of -0.44 (33.1th percentile), this represents normal volume ; whole brain volume measures 941,215 mm³, 3.4% below the reference mean. With a Z-score of -0.43 (33.3th percentile), this represents normal volume ; entorhinal cortex volume measures 2,829 mm³, 23.0% below the reference mean. With a Z-score of -1.41 (7.9th percentile), this represents mild atrophy; fusiform gyrus volume measures 15,506 mm³, 8.9% below the reference mean. With a Z-score of -0.81 (21.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,168 mm³, 5.2% below the reference mean. With a Z-score of -0.45 (32.5th percentile), this represents normal volume . ",
  "text_data": "Age is 74.4 years. Gender is Female. Education: 18 years. MMSE: 30.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with the exception of mild atrophy in the entorhinal cortex (Z-score -1.41, 7.9th percentile). However, the MMSE score of 30 is intact, and there are no significant deficits in other key regions like the hippocampus or whole brain volume.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild entorhinal atrophy but otherwise normal cognitive and structural findings)",
  "timestamp": "2025-07-26T15:27:24.671098"
}