Contrast-enhanced abdominal CT andor abdominal ultrasound and chest X-ray were carried outevery 6 months to evaluate distant metastasis用英文润色、修改下多给几种

Every 6 months, contrast-enhanced abdominal CT, abdominal ultrasound, and chest X-ray were performed to assess the presence of distant metastasis. Additional imaging modalities such as MRI or PET-CT may be employed if necessary to provide a more comprehensive evaluation. The results of these tests were carefully reviewed by a team of experienced radiologists and oncologists to guide treatment decisions and monitor disease progression. In cases where metastatic disease was detected, appropriate interventions were promptly initiated to optimize patient outcomes