Preoperative prediction of lymphovascular invasion and T-staging of rectal cancer via a dual-energy computed tomography iodine map: a feasibility study
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View abstract on PubMed
Summary
This summary is machine-generated.Dual-energy CT (DECT) can accurately predict lymphovascular invasion (LVI) and improve T-staging for rectal cancer (RC). This imaging technique aids in selecting treatments and enhancing patient outcomes.
Area Of Science
- Radiology
- Oncology
- Medical Imaging
Background
- Rectal cancer (RC) staging is crucial for treatment planning.
- Lymphovascular invasion (LVI) is a key prognostic factor in RC.
- Accurate preoperative staging impacts therapeutic decisions and patient outcomes.
Purpose Of The Study
- To evaluate dual-energy computed tomography (DECT) for predicting LVI in RC.
- To assess the accuracy of DECT in preoperative T-staging of RC.
- To determine the value of normalized iodine concentration (NIC) in RC staging and LVI prediction.
Main Methods
- Forty-nine patients with RC underwent DECT scans prior to surgical resection.
- Normalized iodine concentrations (NIC) of tumor and perirectal adipose tissue (PAT) were measured.
- Pathology results served as the gold standard for LVI and T-staging validation.
Main Results
- Tumor NIC in the venous phase was significantly higher in patients with LVI (P < 0.001).
- PAT NIC was significantly higher in advanced T-stage (T3-4a) RC in both arterial and venous phases (P < 0.05 and P < 0.001).
- DECT achieved 85.7% accuracy for LVI prediction and 89.8% for T3-4a diagnosis.
Conclusions
- Tumor and PAT NIC measured by DECT are valuable for preoperative LVI prediction in RC.
- DECT enhances the accuracy of preoperative T-staging for rectal cancer.
- Improved staging and LVI prediction guide clinical treatment selection and prognostic assessment.
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