[Show abstract][Hide abstract] ABSTRACT: Longitudinal shortening is traditionally considered the predominant part of global right ventricular (RV) systolic function. Less attention has been paid to transverse contraction. The aim of this study was to evaluate RV transverse motion by cardiovascular magnetic resonance (CMR) in a large cohort of patients and to assess its relationship with RV ejection fraction (RVEF).
We retrospectively analyzed the CMR scans of 300 patients referred to our center in 2010. RVEF was determined from short axis sequences using the volumetric method. Transverse parameters called RV fractional diameter changes were calculated after measuring RV diastolic and systolic diameters at basal and mid-level in short axis view (respectively FBDC and FMDC). We also measured the tricuspid annular plane systolic excursion (TAPSE) as a longitudinal reference.
Our population was divided into 2 groups according to RVEF. 250 patients had a preserved RVEF (>40%) and 50 had a RV dysfunction (RVEF ≤40%). Transverse and longitudinal motions were significantly reduced in the group with RV dysfunction (p<.0001). After ROC analysis, areas under the curve for FBDC, FMDC and TAPSE, were respectively 0.79, 0.82 and 0.72, with the highest specificity and sensitivity respectively of 88% and 68% for FMDC (threshold at 20%) for predicting RV dysfunction. FMDC had an excellent negative predictive value of 93%.
RV fractional diameter changes, especially at the mid-level, appear to be accurate for semi-quantitative assessment of RV function by CMR. A cut-off of 20% for FMDC differentiates patients with a low (EF≤40%) or a preserved RVEF.
No preview · Article · Oct 2013 · European journal of radiology
[Show abstract][Hide abstract] ABSTRACT: Aneurysms of the azygos vein are often asymptomatic, detected on a chest radiograph simulating paratracheal mass. When the aneurysm is totally thrombosed, it is impossible to distinguish it from another cause of mediastinal mass. A case is presented in which partial thrombosis of the aneurysm and communication with the superior vena cava led to a diagnosis on angiography and CT.
No preview · Article · May 2004 · British Journal of Radiology
[Show abstract][Hide abstract] ABSTRACT: Isolated spontaneous dissection of the superior mesenteric artery is uncommon. We report a case complicated by arterial rupture and discuss diagnostic imaging work-up. Diagnosis is usually made by conventional arteriography. But, dissection can also be diagnosed noninvasively by computed tomography angiography and ultrasound.
No preview · Article · Jul 2003 · Journal de Radiologie
[Show abstract][Hide abstract] ABSTRACT: Percutaneous transluminal angioplasty is recommended as the first choice of therapy for renal artery stenosis. However, morbidity and mortality are significant. Among hemorrhagic complications, renal perforation is unusual. A case is reported, caused by the use of an angled hydrophilic guidewire, in which the diagnosis has been made by computed tomography angiography with typically perirenal hematoma and extravasation of contrast material corresponding to the perforation. This complication has been successfully treated with conservative measures.
No preview · Article · Jul 2003 · Journal des Maladies Vasculaires
[Show abstract][Hide abstract] ABSTRACT: Each kind of superficial vascular malformation (or "angioma") has been included in a widespread classification that has been elaborated by means of a multidisciplinary approach. At present, therapeutic management of these vascular malformations often needs one or several procedures of interventional radiology. The purpose of this paper in to illustrate embolization techniques in each indication and to describe advantages and drawbacks of these different techniques.
No preview · Article · Jan 1998 · Journal of Neuroradiology
[Show abstract][Hide abstract] ABSTRACT: A 75-year-old woman suffered severe haemoptysis after insertion of a Swan-Ganz catheter in an intensive care unit. Control of the pulmonary artery haemorrhage was quickly and successfully achieved with stainless steel coils as the embolic material.
No preview · Article · Mar 1997 · Intensive Care Medicine
[Show abstract][Hide abstract] ABSTRACT: Concomitant presence of hemangiomas of the trunk and spinal cord has been reported in a few patients under the term Cobb syndrome. A 13-year-old boy in good general health presented with two hemangiomas of the trunk. Computed tomography of the spinal cord demonstrated a large hemangioma occupying the right half of the spinal canal from T4 to T10. The lesion was treated successfully by embolization. Neurologic compromise is the main risk associated with such lesions. Two issues remain unsettled: a) when are imaging studies of the central nervous system indicated in patients witb hemangiomas of the trunk, and which methods should be used? b) if a hemangioma of the spinal cord is found, when is treatment required and which methods should be used?.
No preview · Article · Nov 1996 · Annales de pédiatrie
[Show abstract][Hide abstract] ABSTRACT: The aim of this work was to determine the usefulness of systematic liver sonography in patients with immature cutaneous hemangiomas.
Children with immature cutaneous hemangiomas who met inclusion criteria underwent liver sonography.
No case of hepatic angioma was observed.
Liver sonography is not necessary as a routine test in children with several immature angiomas. This examination could be proposed in situations other than those evaluated in this work including miliary angiomas, unusual immature angiomas, hepatomegaly, unexplained heart failure.
No preview · Article · Feb 1996 · Annales de Dermatologie et de Vénéréologie