نتایج جستجو برای: sonography
تعداد نتایج: 7602 فیلتر نتایج به سال:
Twenty-one adult male patients with 24 intracranial neoplasms were studied with intraoperative sonography and preoperative computed tomography (CT). Both methods defined the lesions, but the characteristic appearances were different. Sonography was more effective than CT in determining whether a lesion was cystic, with or without septations, or solid. Most importantly, sonography was an intraop...
Advanced technology and increasing clinical experience have established sonography as a reliable imaging modality for sports-related injuries. Tears of muscles and tendons, tendinosis, and tenosynovitis are promptly diagnosed using ultrasound. Dynamic assessment of joints can be performed, allowing diagnoses of conditions that may remain undetected when evaluated with conventional magnetic reso...
OBJECTIVE The objective of this study was to compare CT and sonography for monitoring radiofrequency (RF) lesions in porcine livers. SUBJECTS AND METHODS RF lesions (n = 12) were created in three pig livers by applying 13 min of current to a multielectrode RF probe with a target temperature of 95 degrees C. Helical unenhanced CT and corresponding axial sonography were performed before ablatio...
BACKGROUND For infiltrative breast lesions; sonography might not always be as helpful as mammography and MRI (magnetic resonance imaging). For higher sensitivity and specificity, these 3 imaging methods should be carried out together. Radiologists should be aware of the patient's history and complaints. Patients who have a specific history like a long-term drug treatment or a palpable tumour sh...
Cranial sonograms of six children with brain tumors (one newborn, four infants, and one 4-year-old child) are presented. In four, sonography showed a large tumor mass and displacement of adjacent structures. In two, the tumors were demonstrated as areas of abnormal brain parenchymal echogenicity without obvious mass effect. Two of the tumors were diffusely echogenic, one was primarily cystic, a...
Birth trauma to the spinal cord is a serious potential complication of delivery. Determining the presence, severity, and extent of injury poses a difficult problem because of the often confusing clinical setting. Myelography has been recommended for assessing spinal cord birth trauma but is invasive and may not be helpful. The role of sonography in evaluating spinal cord birth trauma has not be...
Congenital neck masses in children are a relatively frequent finding. To the clinicians, they may pose various diagnostic and therapeutic dilemmas and high-resolution sonography is therefore a method of choice. Differential diagnosis of paediatric congenital neck masses primarily includes the presence of hemangioma, lymphangioma, thyreoglossal and branchial cleft cysts. The aim of this paper is...
Carotid body tumors typically arise at the level of the common carotid bifurcation where the carotid body exists. Superior and inferior extension beyond the carotid body may occur as well, especially if the tumor is long-standing. We herein describe a case of carotid body tumor in a patient who presented with a right-sided neck mass for 30 years. Computed tomography angiography (CTA) and B-mode...
was honored and excited when Alfred Abuhamad, MD, president of the American Institute of Ultrasound in Medicine (AIUM), asked me to head a task force to educate AIUM members and nonmembers about when and how to do sonography for conditions where other imaging modalities are likely to be considered instead. As an imaging modality, sonography is safe, effective, and affordable compared with other...
New extensive use of thoracic ultrasound (TUS) takes information also from physical acoustic phenomena that are not directly convertible into images of the human body[1].This tendency also takes into account the classic patterns (based on the presence of an adequate acoustic window) emphasizing the role of TUS as an all-in-one approach in many conditions. We stated our perplexities [2] and we m...
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