Radiology
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Comparative Study
Differentiation of nonperforated from perforated appendicitis: accuracy of CT diagnosis and relationship of CT findings to length of hospital stay.
To determine retrospectively the sensitivity and specificity of computed tomographic (CT) signs in differentiating acute nonperforated appendicitis from perforated appendicitis and to compare CT findings with the length of hospital stay. ⋯ Extraluminal air and moderate or severe periappendiceal inflammatory stranding are statistically significant independent predictors for appendiceal perforation and are associated with increased hospital stay.
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To retrospectively evaluate dose-volumetric parameters for association with risk of severe (grade >/=3) radiation pneumonitis (RP) in patients after three-dimensional (3D) conformal radiation therapy for lung cancer. ⋯ MLD is a useful indicator of risk for development of severe RP after 3D conformal radiation therapy in patients with lung cancer.
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To evaluate the use of transcatheter arterial embolization (TAE) in hemodynamically unstable patients with blunt splenic injury in whom there is a transient response to initial fluid resuscitation. ⋯ TAE for blunt splenic injury can be performed successfully even in hemodynamically unstable patients with a transient response to initial fluid resuscitation.
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To determine how often placement of peripherally inserted central catheters (PICCs) without imaging guidance results in an initially correct central venous catheter tip location. ⋯ Pediatric PICC placement without fluoroscopic guidance required catheter manipulation of initial PICC tip position in 723 cases (85.8%). PICC placement with fluoroscopic guidance is highly successful, and the authors believe it is best performed in an angiography suite.
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To prospectively investigate if T2*-weighted dynamic susceptibility-weighted first-pass perfusion magnetic resonance (MR) imaging is feasible at 3.0 T and which dose of contrast agent is suitable for high-field-strength imaging. ⋯ With echo-shifted multishot echo-planar imaging, dynamic susceptibility-weighted perfusion MR imaging at high field strength is feasible without relevant image distortions. Compared with contrast agent dose for 1.5 T imaging, the dose for 3.0 T can be reduced to 0.10 mmol.