AJR. American journal of roentgenology
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AJR Am J Roentgenol · Dec 2010
Comparative StudyA comparative analysis of PTFE-covered and uncovered stents for palliative treatment of malignant extrahepatic biliary obstruction.
The purpose of our study was to evaluate the outcomes of the newly designed partially polytetrafluoroethylene (PTFE)-covered stent and compare the outcomes of PTFE-covered and uncovered stents in patients with malignant extrahepatic biliary obstruction. ⋯ Partially PTFE-covered stents are effective and safe for the palliative treatment of malignant extrahepatic biliary obstruction. Moreover, PTFE-covered stents were significantly superior to uncovered stents in terms of stent patency for palliative treatment of patients with malignant extrahepatic biliary obstruction. In addition, there was no significant difference in patient survival and complication rate between the PTFE-covered and uncovered stent group.
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AJR Am J Roentgenol · Dec 2010
Comparative Study18F-FDG PET/CT of patients with cancer: comparison of whole-body and limited whole-body technique.
Use of the routine field of view for whole-body (18)F-FDG PET/CT can lead to underestimation of the true extent of the disease because metastasis outside the typical base of skull to upper thigh field of view can be missed. The purpose of this study was to evaluate the incremental added value of true whole-body as opposed to this limited whole-body PET/CT of cancer patients. ⋯ Our study showed that 20 of 500 (4.0%) of patients had previously unsuspected malignancy outside the typical limited whole-body field of view. Detection of such malignancy resulted in a change in management in 13 of 500 cases (2.6%). We propose that adopting a true whole-body field of view in the imaging of cancer patients may lead to more accurate staging and restaging than achieved with the routinely used limited whole-body field of view.
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AJR Am J Roentgenol · Dec 2010
CT-guided sternoclavicular joint injections: description of the procedure, reliability of imaging diagnosis, and short-term patient responses.
The purpose of this study was to evaluate pain relief 20 to 30 minutes after diagnostic or therapeutic injections into the sternoclavicular joint and to compare patient outcomes based on the CT diagnosis. ⋯ Two thirds of patients having sternoclavicular joint injections of corticosteroids and local anesthetics report clinically significant improvement regardless of the abnormalities detected on their CT images.
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AJR Am J Roentgenol · Dec 2010
Comparative StudyQuantitative analysis of intracranial hypostasis: comparison of early postmortem and antemortem CT findings.
The purpose of this study was to quantitatively analyze postmortem hypostasis in the intracranial venous sinus on head CT scans compared with the antemortem CT findings in the same patients with the aim of evaluating sedimentation in the heart and great vessels. ⋯ Intracranial hypostasis is a common postmortem CT finding. Radiologists and physicians who interpret postmortem neurologic images should be aware of intracranial hypostasis and differentiate this phenomenon from intracranial hemorrhage.
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AJR Am J Roentgenol · Dec 2010
Percutaneous cryoablation of anterior renal masses: technique, efficacy, and safety.
The safety and efficacy of renal tumor ablation are related, in part, to tumor location. Anterior tumors present a challenge due to the risk of injury to adjacent structures. The purpose of this study was to review the techniques, complications, and short-term outcomes of percutaneous cryoablation of anterior renal masses at a single institution. ⋯ Percutaneous cryoablation of anterior renal masses can be performed with high technical success and low complication rates. The lack of local renal tumor recurrence at short-term follow-up evaluation in this study is encouraging, but long-term follow-up is necessary to ensure the durability of treatment.