Radiology
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To assess the relative accuracies of computed tomography (CT) and magnetic resonance (MR) imaging in the local staging of primary malignant bone and soft-tissue tumors. ⋯ CT and MR imaging are equally accurate in the local staging of malignant bone and soft-tissue neoplasms in the specific anatomic sites studied.
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To measure the radiologic characteristics of subtle lung nodules and develop nodule phantoms that simulate these characteristics. ⋯ The radiologic pattern of subtle lung nodules is poorly simulated by nodule phantoms with simple spherical or disk shapes. The nodule phantoms in this study produce realistic radiographic patterns with an energy-dependent attenuation equivalent to that of tissue. The nodule phantoms are intended for use in experiments involving human subjects.
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To evaluate a focused, helical computed tomographic (CT) technique for imaging the appendix in patients suspected of having appendicitis. ⋯ Appendix CT examination can help diagnose or exclude appendicitis and establish an alternative diagnosis.
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To compare somatostatin-receptor scintigraphy and conventional imaging modalities in the differentiation of small hepatic hemangiomas from small liver metastases in Zollinger-Ellison syndrome. ⋯ In Zollinger-Ellison syndrome, somatostatin-receptor scintigraphy provides an excellent diagnostic tool to differentiate small hepatic hemangiomas from small liver metastases.