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ABSTRACT: Arteriovenous fistula (AVF) is a rare but well-documented complication of pancreatic allotransplantation. Small, tortuous vessels in the head of the transplanted pancreas may complicate transarterial embolization. The authors recently encountered two women who developed clinical pancreatitis after right pelvic transplant placement with documented AVF in the head of the transplanted pancreas. In the first patient, embolization was successfully performed transarterially. In the second patient, transarterial embolization was not feasible due to the small caliber and extreme tortuosity of the pancreaticoduodenal arcade and transvenous embolic occlusion was successfully performed. Both patients recovered with normalization of enzyme levels and pain reduction.
Journal of vascular and interventional radiology: JVIR 08/2008; 19(8):1231-5. · 1.81 Impact Factor
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ABSTRACT: The purpose of this study was to review the technical aspects and the clinical applications of intraoperative sonography of the central nervous system (CNS) as well as the characteristic appearances of brain and spine diseases.
A pictorial review of cases is presented on the basis of the performance and interpretation of intraoperative sonography of the CNS from January 1998 to December 2004 at a single academic institution.
This technique is most commonly used for the localization and characterization of intracranial and spinal masses. Indications for intraoperative sonography of the CNS are biopsy guidance, tumor resection, and drainage or removal of inflammatory masses. It provides important additional information to the surgeon at the time of the operation and contributes to intraoperative decision making and surgical planning. This article reviews the advantages and limitations of intraoperative sonography of the CNS and highlights the typical appearance of CNS diseases.
Intraoperative sonography of the CNS is an interactive technique and helps the neurosurgeon in decision making and surgical planning.
Journal of ultrasound in medicine: official journal of the American Institute of Ultrasound in Medicine 01/2006; 24(12):1671-82. · 1.25 Impact Factor
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ABSTRACT: Uterine artery embolization for leiomyomata may fail due to additional blood supply from the ovarian arteries. The potential role of supplemental ovarian artery embolization is unknown. The authors present here the results for their first six patients who were treated with ovarian artery embolization.
Journal of Vascular and Interventional Radiology 10/2003; 14(9 Pt 1):1177-82. · 2.08 Impact Factor
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ABSTRACT: The development of high-field-strength magnetic resonance (MR) imaging systems has been driven in part by expected improvements in signal-to-noise ratio, contrast-to-noise ratio, spatial-temporal resolution trade-off, and spectral resolution. However, the transition from 1.5- to 3.0-T MR imaging is not straightforward. Compared with body imaging at lower field strength, body imaging at 3.0 T results in altered relaxation times, augmented and new artifacts, changes in chemical shift effects, and a dramatic increase in power deposition, all of which must be accounted for when developing imaging protocols. Inhomogeneities in the static magnetic field and the radiofrequency field at 3.0 T necessitate alterations in the design of coils and other hardware and new approaches to pulse sequence design. Techniques to reduce total body heating are demanded by the physics governing the specific absorption rate. Furthermore, the siting and maintenance of 3.0-T MR imaging systems are complicated by additional safety hazards unique to high-field-strength magnets. These aspects of 3.0-T body imaging represent current challenges and opportunities for radiology practice.
Radiographics 27(5):1445-62; discussion 1462-4. · 2.85 Impact Factor
