Question:
Investigation of choice for whole body imaging in metastasis is
Investigation of choice for whole body imaging in metastasis is
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Pick the radiation-free modality with the best soft-tissue and marrow contrast.
Updated On: Jun 24, 2026
- Magnetic Resonance Imaging
- Angiography
- Venography
- CT Scan
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The Correct Option is A
Solution and Explanation
Step 1: Screening the whole body for metastatic deposits needs an investigation with high soft-tissue contrast, good bone-marrow sensitivity, and no ionizing radiation so the entire body can be scanned safely.
Step 2: Whole-body MRI, using a moving (rolling) table platform with fast T2-weighted turbo spin-echo and 3D gradient-echo sequences, covers head to pelvis quickly and accurately. It is a time-saving and reliable alternative to multimodality work-up for metastases, which is why MRI is the answer.
Step 3: The distractors are not whole-body screening tools. Angiography and venography are vascular catheter studies aimed at specific vessels, not metastasis surveys. CT scan, although useful, carries a significant radiation dose for repeated whole-body coverage and has lower soft-tissue and marrow contrast than MRI.
Step 2: Whole-body MRI, using a moving (rolling) table platform with fast T2-weighted turbo spin-echo and 3D gradient-echo sequences, covers head to pelvis quickly and accurately. It is a time-saving and reliable alternative to multimodality work-up for metastases, which is why MRI is the answer.
Step 3: The distractors are not whole-body screening tools. Angiography and venography are vascular catheter studies aimed at specific vessels, not metastasis surveys. CT scan, although useful, carries a significant radiation dose for repeated whole-body coverage and has lower soft-tissue and marrow contrast than MRI.
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