{
  "ptid_time": "073_S_4443_2012-07-19",
  "img_path": "/data/qiuhui/data/adni/images/073_S_4443/2012-07-19/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 29,392 mm³, 2.1% below the reference mean. With a Z-score of -0.05 (48.0th percentile), this represents normal volume ; hippocampal volume measures 8,519 mm³, 6.1% above the reference mean. With a Z-score of 0.61 (73.0th percentile), this represents normal volume ; whole brain volume measures 1,089,250 mm³, 4.0% below the reference mean. With a Z-score of -0.56 (28.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,936 mm³, 7.7% below the reference mean. With a Z-score of -0.53 (29.8th percentile), this represents normal volume ; fusiform gyrus volume measures 21,399 mm³, 7.5% above the reference mean. With a Z-score of 0.62 (73.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,089 mm³, 1.4% below the reference mean. With a Z-score of -0.12 (45.3th percentile), this represents normal volume . ",
  "text_data": "Age is 68.4 years. Gender is Male. Education: 12 years. MMSE: 25.0. MoCA: 28.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive screening scores (MMSE 25, MoCA 28) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T09:47:59.172959"
}