What should you know about a bone marrow CT scan?

It uses X-rays and computer processing to create cross-sectional images. In a bone marrow assessment, clinicians may use those images to look for bone damage, altered bone density, enlarged organs, lymph nodes, or disease outside the marrow. A marrow biopsy or other laboratory testing may still be needed to identify abnormal cells.

The radiology report describes visible findings and their location; it is not usually a stand-alone diagnosis of a marrow disorder. A normal-looking scan cannot rule out microscopic changes within marrow, while an abnormal area may have several possible explanations. Your clinical team interprets the images alongside symptoms, examination findings, blood tests, and any tissue results. Contrast may be given through a vein to make blood vessels, organs, and some abnormal tissues easier to distinguish.

Before the appointment, tell the imaging team about previous contrast reactions, kidney problems, pregnancy or possible pregnancy, and medicines you take. Follow the centre's instructions about eating, drinking, and medication. During the scan, staying still helps produce clear images, and you may be asked to hold your breath briefly. Afterward, confirm when the report will reach the clinician who requested it and whether another test is planned to examine marrow cells directly.

Tell staff immediately if you develop breathing difficulty, swelling of the face or throat, widespread hives, marked dizziness, or feel faint during or after contrast administration. Seek prompt medical assessment for new weakness or numbness, loss of bladder or bowel control, severe worsening bone or back pain, or inability to bear weight. These symptoms can require urgent evaluation regardless of what an earlier scan showed.

Ask which body areas will be scanned, whether contrast is planned, and what question the images are intended to answer. You can also ask how the findings compare with your blood tests, whether a bone marrow biopsy is needed, and who will explain any follow-up. If the report uses terms such as a lesion, sclerosis, or lytic change, ask what that wording means in your specific case.