{
  "ptid_time": "137_S_0283_2009-04-23",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0283/2009-04-23/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 23,709 mm³, 49.6% below the reference mean. With a Z-score of -1.44 (7.5th percentile), this represents mild atrophy; hippocampal volume measures 6,795 mm³, 2.5% below the reference mean. With a Z-score of -0.21 (41.5th percentile), this represents normal volume ; whole brain volume measures 1,089,920 mm³, 5.9% above the reference mean. With a Z-score of 0.77 (78.0th percentile), this represents normal volume ; entorhinal cortex volume measures 3,405 mm³, 14.2% below the reference mean. With a Z-score of -0.93 (17.6th percentile), this represents normal volume ; fusiform gyrus volume measures 17,337 mm³, 4.0% below the reference mean. With a Z-score of -0.35 (36.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,239 mm³, 5.3% above the reference mean. With a Z-score of 0.47 (68.2th percentile), this represents normal volume . ",
  "text_data": "Age is 81.4 years. Gender is Male. Education: 12 years. MMSE: 29.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The ventricular volume shows mild atrophy, but hippocampal, whole brain, and other regional volumes are within normal ranges. The MMSE score of 29 is intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T16:08:01.239295"
}