{
  "ptid_time": "023_S_4115_2013-09-30",
  "img_path": "/data/qiuhui/data/adni/images/023_S_4115/2013-09-30/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 27,075 mm³, 9.8% below the reference mean. With a Z-score of -0.23 (40.8th percentile), this represents normal volume ; hippocampal volume measures 8,854 mm³, 10.3% above the reference mean. With a Z-score of 1.03 (84.8th percentile), this represents mild enlargement; whole brain volume measures 1,124,350 mm³, 0.9% below the reference mean. With a Z-score of -0.13 (44.9th percentile), this represents normal volume ; entorhinal cortex volume measures 4,885 mm³, 14.6% above the reference mean. With a Z-score of 1.01 (84.4th percentile), this represents mild enlargement; fusiform gyrus volume measures 19,510 mm³, 2.0% below the reference mean. With a Z-score of -0.17 (43.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,894 mm³, 2.2% above the reference mean. With a Z-score of 0.18 (57.0th percentile), this represents normal volume . ",
  "text_data": "Age is 69.4 years. Gender is Male. Education: 18 years. MMSE: 29.0. MoCA: 25.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.00 SUVR (normal ); Total tau: 264.80 pg/mL (normal ); Phosphorylated tau: 23.37 pg/mL (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The brain volume measurements are largely within normal ranges or mildly enlarged (hippocampus, entorhinal cortex), with no significant atrophy. Cognitive scores (MMSE 29, MoCA 25) are normal to borderline, and biomarkers (tau, AV45) are unremarkable. APOE4-negative status further reduces Alzheimer's risk.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: High",
  "timestamp": "2025-07-26T03:02:21.209654"
}