'The Closer'-percutaneous vascular suture device: evaluation of safety and performance in neuroangiography.

Objective: To evaluate the use of the suture mediated vascular closure device concerning practicability and safety in clinical angiography practice.

Material And Methods: One hundred and seventeen patients (59 female, 58 male, mean age 40.9+/-13.

Effect of contrast dose and field strength in the magnetic resonance detection of brain metastases.

Purpose: To compare the diagnostic efficacy of a standard and cumulative triple dose of magnetic resonance (MR) imaging contrast agent in the evaluation of brain metastases using a high-field 3.0 T MR unit versus a standard field 1.5 T MR unit.

Magnetic resonance imaging contrast enhancement of brain tumors at 3 tesla versus 1.5 tesla.

Rationale And Objectives: To compare the diagnostic efficacy of a standard dose of MRI contrast agent in the evaluation of primary brain tumors and metastases using a high-field 3 tesla MR unit versus a 1.5 tesla MR unit.

Methods: Sixteen patients with brain tumors were examined at both field strengths using identical axial T1-SE protocols pre- and postcontrast (0.