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RISS 인기검색어
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- 저자 : En-Haw Wu (검색결과 2 건)
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CT-Guided Core Needle Biopsy of Deep Suprahyoid Head and Neck Lesions
En-Haw Wu,Yao-Liang Chen,Yi-Ming Wu,Yu-Ting Huang,Ho-Fai Wong,Shu-Hang Ng 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.2
Objective: To evaluate the efficacy of computer tomography (CT)-guided core needle biopsy (CNB) in the diagnosis of deep suprahyoid lesions in patients with treated head and neck cancers. Materials and Methods: Between December, 2003 and May, 2011, 28 CT-guided CNBs were performed in 28 patients with deep suprahyoid head and neck lesions. All patients had undergone treatment for head and neck cancers. Subzygomatic, paramaxillary, and retromandibular approaches were used. The surgical results, response to treatment, and clinical follow-up were used as the diagnostic reference standards. Results: All biopsies yielded adequate specimens for definitive histological diagnoses. A specimen from a right parapharyngeal lesion showed atypia, which was deemed a false negative diagnosis. Diagnostic accuracy was 27/28 (96.4%). Two minor complications were encountered: a local hematoma and transient facial palsy. Between the 18 or 20 gauge biopsy needles, there was no statistical difference in the diagnostic results. Conclusion: CT-guided core needle biopsy, with infrequent and minor complications, is an accurate and efficient method for the histological diagnosis of deep suprahyoid lesions in post-treated head and neck cancer patients. This procedure can preclude an unnecessary surgical intervention, especially in patients with head and neck cancers.
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Troubleshooting Arterial-Phase MR Images of Gadoxetate Disodium-Enhanced Liver
허지미,김소연,Benjamin M. Yeh,이승수,김경원,En-Haw Wu,Z. Jane Wang,Li-qin Zhao,Wei Chou Chang 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.6
Gadoxetate disodium is a widely used magnetic resonance (MR) contrast agent for liver MR imaging, and it provides both dynamic and hepatobiliary phase images. However, acquiring optimal arterial phase images at liver MR using gadoxetate disodium is more challenging than using conventional extracellular MR contrast agent because of the small volume administered, the gadolinium content of the agent, and the common occurrence of transient severe motion. In this article, we identify the challenges in obtaining high-quality arterial-phase images of gadoxetate disodium-enhanced liver MR imaging and present strategies for optimizing arterial-phase imaging based on the thorough review of recent research in this field.
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