Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine
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Sonographic evaluation of the gastrointestinal (GI) tract may be difficult because of overlying intraluminal bowel gas and gas-related artifacts. However, in the absence of these factors and with the development of high-resolution scanners and the technical experience of radiologists, sonography can become a powerful tool for GI tract assessment. This pictorial essay focuses on sonographic findings of GI tract lesions compared with endoscopic, computed tomographic, and magnetic resonance imaging findings. Neoplastic and non-neoplastic diseases and postoperative complications are illustrated, and the distinctive sonographic characteristics of these entities are highlighted.
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Neonates in the neonatal intensive care unit often require considerable support with endotracheal tubes, umbilical arterial and venous catheters, and peripherally inserted central venous catheters. Support device evaluation with radiography exposes neonates to ionizing radiation. This study evaluated the effectiveness of sonographic localization for endotracheal tubes, umbilical arterial and venous catheters, and peripherally inserted central venous catheters. ⋯ The effectiveness of sonography was excellent for evaluation of umbilical arterial and venous catheters, endotracheal tubes, and peripherally inserted central venous catheters. These results support the goal of further point-of-care training and accreditation to use sonography as a primary modality for complete evaluation of NICU support devices.
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Randomized Controlled Trial
A Randomized Double-Blinded Trial on the Effects of Ultrasound Transducer Orientation on Teaching and Learning Ultrasound-Guided Regional Anesthesia.
Learning ultrasound-guided regional anesthesia skills, especially needle/ beam alignment, can be especially difficulty for trainees, who can often become frustrated. We hypothesized that teaching novices to orient the transducer and needle perpendicular to their shoulders will improve performance on a standardized task, compared to holding the transducer and needle parallel to the shoulders. ⋯ Ultrasound-guided regional anesthesia trainees complete a standardized task more quickly and efficiently when instructed to hold the transducer and needle in an orientation perpendicular to their shoulders.
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To compare older and newer magnetic resonance imaging (MRI) criteria for placental invasion and to compare the sensitivity, specificity, and accuracy of MRI and sonography in determining the depth of placental invasion. ⋯ The diagnosis of placental invasion remains challenging on sonography and MRI, which perform similarly. The presence of 2 or more criteria adds specificity to the diagnosis of placental invasion on MRI.