{
  "ptid_time": "002_S_5178_2013-12-05",
  "img_path": "/data/qiuhui/data/adni/images/002_S_5178/2013-12-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,086 mm³, 26.4% below the reference mean. With a Z-score of -0.63 (26.5th percentile), this represents normal volume ; hippocampal volume measures 7,516 mm³, 6.4% below the reference mean. With a Z-score of -0.64 (26.2th percentile), this represents normal volume ; whole brain volume measures 1,092,400 mm³, 3.7% below the reference mean. With a Z-score of -0.53 (30.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,846 mm³, 13.7% above the reference mean. With a Z-score of 0.95 (82.8th percentile), this represents normal volume ; fusiform gyrus volume measures 17,722 mm³, 11.0% below the reference mean. With a Z-score of -0.91 (18.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,272 mm³, 5.1% below the reference mean. With a Z-score of -0.42 (33.8th percentile), this represents normal volume . ",
  "text_data": "Age is 69.1 years. Gender is Male. Education: 18 years. MMSE: 27.0. MoCA: 23.0. 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) fall within normal ranges based on Z-scores and percentiles. The MMSE score of 27 is within the normal range, while the MoCA score of 23 is slightly below normal (typically <26 suggests mild cognitive impairment). However, the absence of significant atrophy or biomarker abnormalities (APOE4 negative) suggests no clear evidence of neurodegeneration.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (MoCA is borderline, but structural and genetic data support",
  "timestamp": "2025-07-25T20:33:16.722593"
}