Imaging Modality of Choice

A 60-year-old chronic smoker is diagnosed with non-small cell lung cancer based on biopsy. The physician needs to accurately stage the cancer to determine the appropriate treatment plan. Which imaging modality is most crucial for comprehensive staging, including assessment for distant metastases?

A 35-year-old male presents to the emergency department with sudden onset severe right flank pain radiating to the groin, associated with nausea and hematuria. Suspecting nephrolithiasis, which imaging modality is the most appropriate initial choice?

A 65-year-old male suddenly develops left-sided weakness and slurred speech. He arrives at the emergency department within 30 minutes of symptom onset. Which of the following is the most appropriate initial imaging modality to differentiate between ischemic and hemorrhagic stroke?

A 45-year-old carpenter presents with chronic right shoulder pain, especially with overhead activities, and weakness. Physical examination suggests a rotator cuff pathology. What is the most accurate imaging modality for diagnosing a rotator cuff tear?

A 28-year-old pregnant woman presents with acute right lower quadrant pain, nausea, and vomiting. On examination, she has localized tenderness and guarding. What is the most appropriate initial imaging modality to evaluate for acute appendicitis?