{
  "ptid_time": "024_S_4169_2015-08-24",
  "img_path": "/data/qiuhui/data/adni/images/024_S_4169/2015-08-24/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 19,564 mm³, 12.4% below the reference mean. With a Z-score of -0.31 (37.8th percentile), this represents normal volume ; hippocampal volume measures 7,338 mm³, 4.5% below the reference mean. With a Z-score of -0.51 (30.6th percentile), this represents normal volume ; whole brain volume measures 1,156,840 mm³, 12.4% above the reference mean. With a Z-score of 1.54 (93.9th percentile), this represents moderate enlargement; entorhinal cortex volume measures 3,490 mm³, 10.4% below the reference mean. With a Z-score of -0.80 (21.1th percentile), this represents normal volume ; fusiform gyrus volume measures 21,152 mm³, 16.2% above the reference mean. With a Z-score of 1.82 (96.6th percentile), this represents moderate enlargement; middle temporal gyrus volume measures 22,646 mm³, 10.4% above the reference mean. With a Z-score of 0.92 (82.1th percentile), this represents normal volume . ",
  "text_data": "Age is 66.0 years. Gender is Female. Education: 13 years. MMSE: 27.0. MoCA: 24.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.07 SUVR (normal ); Total tau: 286.50 pg/mL (normal ); Phosphorylated tau: 24.60 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal or slightly below-average volumes in key regions like the hippocampus and entorhinal cortex, with some regions (whole brain, fusiform gyrus) showing moderate enlargement. Cognitive scores (MMSE 27, MoCA 24) are within normal limits, and biomarkers (T-tau, P-tau, AV45) are normal. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T03:19:23.048873"
}