Fingertip ultrasound evaluation of umbilical catheter position in the neonatal intensive care unit compared to conventional ultrasound radiography: a preliminary investigation.

Objective: The purpose of the study is to compare conventional linear and fingertip ultrasound transducers, for the evaluation of umbilical catheters, with radiography. Fingertip ultrasound transducers have the potential to simplify sonographic examination due to their small size and ability to fit on a finger.

Study Design: A prospective, IRB approved comparative study was performed.

Dose-response effect of human equivalent radiation in the murine mandible: Part II. A biomechanical assessment.

Background: Despite the widespread use of adjuvant irradiation for head and neck cancer, the extent of damage to the underlying bone is not well understood. However, patients can suffer serious clinical consequences, including pathologic fractures, nonunion, and osteoradionecrosis. The authors' specific aim was to objectively quantify the human equivalent radiation dose-response effect of radiation on the biomechanical properties of the murine mandible.