Pediatric radiology
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Pediatric radiology · Mar 1997
Case ReportsTechnical aspects of insertion and removal of an inferior vena cava IVC filter for prophylactic treatment of pulmonary embolus.
We report the successful insertion and subsequent retrieval of a Gunther-Tulip vena cava filter in a patient with an anomalous left-sided inferior vena cava, who developed a right ilio-femoral venous thrombosis prior to planned surgical resection of a right femoral osteosarcoma. The indication was for short-term prophylaxis against pulmonary embolism during manipulative leg surgery.
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Pediatric radiology · Nov 1996
Ultrasonographic assessment of intragastric volume in neonates: factors affecting the relationship between intragastric volume and antral cross-sectional area.
Measuring antral cross-sectional area by ultrasonography can be an ideal way to evaluate intragastric milk volume in infants. Technical details, however, remain to be established before its clinical application. We investigated the effects of posture and ultrasonographic plane on the correlation between milk volume and antral cross-sectional area. ⋯ Next, we studied the effect of intragastric gas on the antral cross-sectional area in subjects who were given 40 ml of milk followed by an injection of air. More than 20 ml of intragastric gas increases antral cross-sectional area significantly. Ultrasonographic evaluation of intragastric volume requires attention to the above factors.
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Pediatric radiology · Oct 1996
Fundamentals of transorbital sonographic evaluation of optic nerve sheath expansion under intracranial hypertension. I. Experimental study.
The optic nerve, ontogenetically part of the central nervous system, is surrounded by subarachnoidal cerebrospinal fluid (CSF) and dura mater. Because of the connection with the intracranial subarachnoidal space, CSF pressure variations influence the optic nerve sheath (ONS) diameter. Histologic studies revealed a segment of the optic nerve in which maximal diameter fluctuations could be expected, namely the bulging dura mater region approximately 3 mm behind the papilla. ⋯ Under clinical conditions, however, only axial sections can be obtained using anterior probe positions with transbulbar sound directions. Using such axial projections the 3 mm position proved reliably reproducible. The reduced resolution of the optic nerve itself, allowing it to be distinguished from its surrounding sheath, proved to be somewhat disadvantageous from this projection angle.
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Pediatric radiology · Oct 1996
Radiographic skeletal survey and radionuclide bone scan in Langerhans cell histiocytosis of bone.
The lack of a consensus in the literature on the imaging strategy in Langerhans cell histiocytosis (LCH) bone lesions in childhood. ⋯ In the initial work-up both RSS and RBS should be carried out, while in the follow-up only RSS should be performed.