National Board of Chiropractic Examiners (NBCE) Practice Test

Which imaging modality is most effective for demonstrating bone marrow tumors?

1. CT Scan

2. X-ray

3. MRI

4. Ultrasound

The correct answer is: MRI

MRI (Magnetic Resonance Imaging) is the most effective imaging modality for demonstrating bone marrow tumors due to its superior ability to visualize soft tissue structures, including the bone marrow. MRI uses powerful magnets and radio waves to create detailed images of the body, allowing for the differentiation of various tissue types based on their water content and composition. Bone marrow tumors, such as multiple myeloma or metastatic lesions, often alter the composition and structure of the marrow, which MRI can highlight effectively. The high-resolution images produced by MRI provide clear contrast between healthy and abnormal marrow, enabling better assessment of the extent and involvement of the tumor. Additionally, MRI does not utilize ionizing radiation, making it safer for patients compared to other imaging modalities that do, such as CT scans or X-rays. While CT scans are useful for evaluating bone structures and can detect some lesions, MRI is preferred for its detailed imaging of bone marrow pathology and for guiding treatment decisions. Ultrasound is generally not effective for assessing bone marrow tumors, as it is limited in its ability to penetrate bone and visualize marrow tissue.