Role of CT USG bone scintigraphy PET in the evaluation of musculoskeletal tumors

Role of CT USG bone scintigraphy PET in the evaluation of musculoskeletal tumors

What is the role of computed tomography (CT), ultrasonography (US), bone scintigraphy, and positron emission tomography/computed tomography (PET/CT) in the evaluation of musculoskeletal tumors?

CT may be helpful to detect the nidus in a suspected osteoid osteoma. CT-guided percutaneous cryoablation has been shown to be an effective treatment of osteoid osteoma. CT is also used for percutaneous image-guided biopsy of bone tumors and in the workup for detection of pulmonary metastases. US offers real-time multiplanar imaging for performing musculoskeletal soft tissue biopsies and can be used to guide the biopsy of a bone lesion with an extraosseous soft tissue component. US may be particularly useful for biopsy of small soft tissue lesions that are difficult to detect on a noncontrast CT and also provides real-time confirmation of needle placement. Technetium-99m ( 99m Tc) methylene diphosphonate (MDP) bone scintigraphy with single photon emission computed tomography (SPECT) is often utilized for the detection of osseous metastases. 18 F-fluorodeoxyglucose (FDG) PET/CT may also be used for the detection of metabolically active soft tissue neoplasms or osseous malignancies. Some studies indicate that 18 F-sodium fluoride (NaF) PET/CT is a potentially superior imaging technique for the detection of osseous metastases.

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