Characterization of adrenal lesions: comparison of 2D and 3D dual gradient-echo MR imaging at 3 T--preliminary results.

Purpose: To retrospectively compare a two-dimensional (2D) and a three-dimensional (3D) technique for in-phase (IP) and opposed-phase (OP) single-breath-hold 3-T magnetic resonance (MR) imaging in the characterization of adrenal lesions, with histopathologic confirmation, computed tomographic findings, or imaging follow-up for a minimum of 6 months used as the reference standard.

Materials And Methods: This retrospective HIPAA-compliant study was approved by institutional review board, and a waiver of informed consent was obtained. Thirty-four patients (mean age, 57 years) with 37 adrenal lesions underwent 3-T adrenal MR imaging with both 2D and 3D single-breath-hold dual gradient-echo (GRE) MR sequences.

Low-tube-voltage, high-tube-current multidetector abdominal CT: improved image quality and decreased radiation dose with adaptive statistical iterative reconstruction algorithm--initial clinical experience.

Purpose: To investigate whether an adaptive statistical iterative reconstruction (ASIR) algorithm improves the image quality at low-tube-voltage (80-kVp), high-tube-current (675-mA) multidetector abdominal computed tomography (CT) during the late hepatic arterial phase.

Materials And Methods: This prospective, single-center HIPAA-compliant study was institutional review board approved. Informed patient consent was obtained.