{
  "ptid_time": "062_S_1182_2008-09-17",
  "img_path": "/data/qiuhui/data/adni/images/062_S_1182/2008-09-17/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 21,369 mm³, 23.9% below the reference mean. With a Z-score of -0.55 (29.2th percentile), this represents normal volume ; hippocampal volume measures 7,551 mm³, 6.1% above the reference mean. With a Z-score of 0.56 (71.3th percentile), this represents normal volume ; whole brain volume measures 1,010,680 mm³, 3.7% above the reference mean. With a Z-score of 0.47 (67.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,288 mm³, 16.7% above the reference mean. With a Z-score of 1.03 (84.8th percentile), this represents mild enlargement; fusiform gyrus volume measures 16,189 mm³, 4.8% below the reference mean. With a Z-score of -0.44 (33.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 17,986 mm³, 6.2% below the reference mean. With a Z-score of -0.54 (29.6th percentile), this represents normal volume . ",
  "text_data": "Age is 77.5 years. Gender is Female. Education: 18 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges or even slightly above average, with no significant atrophy. The MMSE score of 30/30 indicates intact cognitive function, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:19:35.273984"
}