{
  "ptid_time": "027_S_5093_2015-03-12",
  "img_path": "/data/qiuhui/data/adni/images/027_S_5093/2015-03-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,656 mm³, 30.0% below the reference mean. With a Z-score of -0.69 (24.6th percentile), this represents normal volume ; hippocampal volume measures 6,451 mm³, 9.3% below the reference mean. With a Z-score of -0.86 (19.6th percentile), this represents normal volume ; whole brain volume measures 1,045,240 mm³, 7.2% above the reference mean. With a Z-score of 0.91 (81.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,539 mm³, 3.6% below the reference mean. With a Z-score of -0.22 (41.1th percentile), this represents normal volume ; fusiform gyrus volume measures 18,090 mm³, 6.3% above the reference mean. With a Z-score of 0.58 (71.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,550 mm³, 12.4% above the reference mean. With a Z-score of 1.08 (85.9th percentile), this represents mild enlargement. ",
  "text_data": "Age is 71.3 years. Gender is Female. Education: 19 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.03 SUVR (normal ); Total tau: 246.20 pg/mL (normal ); Phosphorylated tau: 21.39 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volumes (including hippocampal, entorhinal cortex, and other key regions) are within normal ranges or mildly enlarged, with no significant atrophy. Cognitive scores (MMSE 30, MoCA 27) are normal, and biomarkers (T-tau, P-tau, AV45) are unremarkable. No APOE4 risk allele is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T04:07:30.023356"
}