{
  "ptid_time": "130_S_0956_2007-11-01",
  "img_path": "/data/qiuhui/data/adni/images/130_S_0956/2007-11-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,421 mm³, 39.9% below the reference mean. With a Z-score of -1.00 (15.9th percentile), this represents normal volume ; hippocampal volume measures 7,920 mm³, 3.1% above the reference mean. With a Z-score of 0.34 (63.5th percentile), this represents normal volume ; whole brain volume measures 1,072,110 mm³, 4.2% above the reference mean. With a Z-score of 0.52 (69.8th percentile), this represents normal volume ; entorhinal cortex volume measures 4,191 mm³, 7.7% above the reference mean. With a Z-score of 0.59 (72.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,507 mm³, 1.6% above the reference mean. With a Z-score of 0.18 (57.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,535 mm³, 4.8% below the reference mean. With a Z-score of -0.43 (33.5th percentile), this represents normal volume . ",
  "text_data": "Age is 64.8 years. Gender is Female. Education: 7 years. MMSE: 28.0. Logical Memory: 25.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "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. The MMSE score of 28 is within the normal range (≥26), and the absence of APOE4 alleles further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T14:32:48.283099"
}