{
  "ptid_time": "041_S_1418_2017-08-04",
  "img_path": "/data/qiuhui/data/adni/images/041_S_1418/2017-08-04/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 50,228 mm³, 2.8% above the reference mean. With a Z-score of 0.25 (59.9th percentile), this represents normal volume ; hippocampal volume measures 6,149 mm³, 3.4% below the reference mean. With a Z-score of -0.38 (35.4th percentile), this represents normal volume ; whole brain volume measures 998,386 mm³, 0.3% below the reference mean. With a Z-score of -0.06 (47.8th percentile), this represents normal volume ; entorhinal cortex volume measures 3,713 mm³, 6.1% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; fusiform gyrus volume measures 17,387 mm³, 3.2% above the reference mean. With a Z-score of 0.36 (64.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,366 mm³, 2.6% below the reference mean. With a Z-score of -0.40 (34.6th percentile), this represents normal volume . ",
  "text_data": "Age is 91.5 years. Gender is Male. Education: 12 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 0.99 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) fall within normal ranges based on Z-scores and percentiles. Cognitive testing (MMSE: 30, MoCA: 25) suggests intact cognition with only mild executive dysfunction (MoCA slightly below typical cutoff for normal). No significant atrophy or amyloid pathology (AV45 normal) is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T07:06:57.329729"
}