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In neonates and children, sonographic examinations of the renal pyramids may depict a spectrum of unique changes in echogenicity due to the effects of physiologic processes or a wide variety of pathologic processes that may affect the collecting ducts or interstitium of the pyramids. Focused sonographic evaluation of the pyramids with high-frequency(More)
Standardized evaluation of all newborns with antenatally recognized hydronephrosis (ANH) at The Hospital for Sick Children (HSC) has included voiding cystourethrography (VCUG). This paper reviews this protocol to determine: (1) the prevalence of vesicoureteral reflux (VUR) in isolated ANH and (2) the value of performing VCUG in cases of mild hydronephrosis,(More)
OBJECTIVE The purpose of this study was to assess the safety of power injector use in peripheral IV injections for CT examinations of children by measuring the incidence of contrast extravasation and to review the management of extravasation as reported in the literature. SUBJECTS AND METHODS At a tertiary pediatric center, we prospectively collected data(More)
OBJECTIVE To describe the long-term outcomes of pediatric pleural empyema. DESIGN Prospective observational study from October 2008 to October 2011. SETTING Tertiary care children's hospital. PARTICIPANTS Children with pleural empyema (loculations and/or septations identified on radiologic imaging or frank pus on thoracentesis). MAIN OUTCOME(More)
PURPOSE To evaluate the current practice of and job market for pediatric radiologists in the United States and Canada with a 1998 survey and compare findings with those of surveys from 1980 and 1989. MATERIALS AND METHODS Surveys were mailed to the 728 active members of the Society for Pediatric Radiology. Questions covered professional practice,(More)
Bronchial rupture is a rare and serious complication of blunt chest trauma in children. The diagnosis of this injury is challenging and requires a high degree of clinical suspicion. It is frequently associated with other severe injuries that may draw the focus of attention away from this potentially catastrophic but treatable injury. The radiographic(More)
OBJECTIVE The purpose of this study was to illustrate the spectrum of sonographic findings in testicular torsion in a large series of neonates and infants. These patterns and their evolution have, to our knowledge, not been described previously. CONCLUSION The sonographic appearance of testicular torsion in neonates and infants can be divided into three(More)
PURPOSE Contrast medium enhanced harmonic ultrasound is a recently developed ultrasound technique that improves the assessment of renal parenchymal vascularity. We performed a preliminary study to define the ability of contrast enhanced ultrasound with harmonic imaging to detect and localize renal scars in a porcine model of experimentally induced(More)
OBJECTIVE Our objective was to describe the spectrum of renal findings using a high-frequency linear array transducer in patients with autosomal recessive polycystic kidney disease (ARPKD). CONCLUSION There is a spectrum of findings in the kidney in patients with ARPKD that is very well depicted using the high-resolution technique described in this(More)
Cystic mesenteric lymphatic malformations are uncommon abdominal masses, which can cause abdominal signs and symptoms for a wide variety of reasons. Symptoms owing to volvulus are uncommon and have not been illustrated previously in the radiology literature. We present two cases to illustrate volvulus as a complication of mesenteric lymphatic malformations(More)