{
  "ptid_time": "123_S_0072_2010-01-27",
  "img_path": "/data/qiuhui/data/adni/images/123_S_0072/2010-01-27/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 28,620 mm³, 25.7% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume ; hippocampal volume measures 7,985 mm³, 5.6% above the reference mean. With a Z-score of 0.55 (70.9th percentile), this represents normal volume ; whole brain volume measures 1,066,450 mm³, 1.2% below the reference mean. With a Z-score of -0.16 (43.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,562 mm³, 11.3% above the reference mean. With a Z-score of 0.76 (77.7th percentile), this represents normal volume ; fusiform gyrus volume measures 20,301 mm³, 7.8% above the reference mean. With a Z-score of 0.66 (74.6th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,522 mm³, 10.2% above the reference mean. With a Z-score of 0.92 (82.1th percentile), this represents normal volume . ",
  "text_data": "Age is 74.6 years. Gender is Male. Education: 16 years. MMSE: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with no significant atrophy. The MMSE score of 28 is within the normal range (≥26), and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T12:21:45.462195"
}