Radiation dose reduction for musculoskeletal computed tomography of the pelvis with preserved image quality.

Objective: To analyze the impact of pelvic computed tomography (CT) technique optimization on estimated dose and subjective and objective image quality.

Materials And Methods: An institutional review board (IRB)-approved retrospective records review was performed with waived informed consent. Five CT scanners (various manufacturers/models) were standardized to match the lowest dose profile on campus via subjective assessment of clinical images by experienced musculoskeletal radiologists.

Sciatic neuromuscular variants on MR neurography: frequency study and interobserver performance.

Objective: To evaluate the frequency of sciatic neuromuscular variants on MR neurography and determine the interobserver variability.

Methods: A retrospective evaluation of 137 consecutive lumbosacral plexus magnetic resonance neurography examinations was performed. All examinations were performed using nerve selective 3D imaging and independently reviewed by two readers for the presence of sciatic neuromuscular variants and piriformis muscle asymmetry.

3-D Isotropic MR Imaging for Planning Bone Reconstruction in Patients With Femoroacetabular Impingement.

Background: Femoroacetabular impingement (FAI) is commonly seen in young or middle-aged patients. Early detection and correction of FAI-related bony deformities or pelvic realignment are essential to prevent the development or progression of hip osteoarthritis.

Discussion: Computed tomography (CT) and magnetic resonance (MR) imaging are the reference standards for the evaluation of bony anatomy and treatable internal derangement findings of the hip, respectively.