{
  "ptid_time": "023_S_4448_2012-08-16",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4448/2012-08-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,182 mm³, 23.1% below the reference mean. With a Z-score of -0.58 (28.2th percentile), this represents normal volume ; hippocampal volume measures 7,994 mm³, 4.0% above the reference mean. With a Z-score of 0.45 (67.4th percentile), this represents normal volume ; whole brain volume measures 1,049,810 mm³, 2.0% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,257 mm³, 9.4% above the reference mean. With a Z-score of 0.72 (76.6th percentile), this represents normal volume ; fusiform gyrus volume measures 18,147 mm³, 0.3% below the reference mean. With a Z-score of -0.04 (48.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,976 mm³, 7.1% above the reference mean. With a Z-score of 0.63 (73.6th percentile), this represents normal volume . ",
  "text_data": "Age is 64.3 years. Gender is Female. Education: 16 years. MMSE: 29.0. MoCA: 27.0. 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. Cognitive scores (MMSE 29, MoCA 27) are also within normal limits, and the absence of APOE4 further reduces Alzheimer's risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:05:22.026176"
}