Evaluation of scattered radiation dose received by medical staff during uterine artery embolization in the operating room.

Background: The air kerma radiation doses have gained much attention since the operating room interventional radiology is a place where medical staff are exposed to a fluoroscopy environment and gain a cumulative dose during the uterine artery embolization procedure.

Objective: We aimed to evaluate the radiation dose received by medical staff by applying a flat X-ray machine in the surgical room during uterine artery embolization.

Methods: An ATOM humanoid model was laid on the operating table and simulated a patient.

Quantitative assessment of three vendor's metal artifact reduction techniques for CT imaging using a customized phantom.

A metal implant was placed in an acrylic phantom to enable quantitative analysis of the metal artifact reduction techniques used in computed tomography (CT) scanners from three manufacturers. Two titanium rods were placed in a groove in a cylindrical phantom made by acrylic, after which the groove was filled with water. The phantom was scanned using three CT scanners (Toshiba, GE, Siemens) under the abdomen CT setting.

Personal Exposure Prescription Method Reduces Dose in Radiography.

Purpose: To evaluate the effectiveness of an automatic, personalized exposure prescription method designed to reduce radiation dose during radiography examinations.

Methods: Using standard imaging parameters of average-sized patients, the authors measured individual body-part thicknesses or imaging regions of 116 patients (69 men, 47 women) and calculated each patient's exposure amount according to the thickness of the part or region. The data were used to develop each patient's personalized exposure prescription.

Accuracy of dual-energy computed tomography for the quantification of iodine in a soft tissue-mimicking phantom.

The objective of this study was to evaluate the accuracy of dual-energy CT (DECT) for quantifying iodine using a soft tissue-mimicking phantom across various DECT acquisition parameters and dual-source CT (DSCT) scanners. A phantom was constructed with plastic tubes containing soft tissue-mimicking materials with known iodine concentrations (0-20 mg/mL). Experiments were performed on two DSCT scanners, one equipped with an integrated detector and the other with a conventional detector.

Cancer Patient-Derived Circulating Microparticles Enhance Lung Metastasis in a Rat Model: Dual-Source CT, Cellular, and Molecular Studies.

Purpose: This study aimed to test the hypothesis that lung cancer patient-derived circulating microparticles (LCC-MPs) enhance metastatic lung tumors in a rat model.

Procedures: The controls (n = 6) and LCC-MP-treated rats (n = 6) with N1S1-induced pulmonary metastatic hepatocellular carcinoma (HCC) underwent dual-source CT (DSCT) on days 10, 15, and 20. Cellular and molecular studies were performed subsequently.

Assessment of hepatic fatty infiltration using dual-energy computed tomography: a phantom study.

The purpose of this study was to examine the performance of dual-energy computed tomography (DECT) for the quantification of liver fat content (LFC). We prepared two phantoms: homogenized mixtures of porcine liver and fat and homogeneous mixtures of liver- and fat-equivalent solutions. Tubes containing mixtures with known fat concentrations were scanned on a dual-source CT scanner using two DE scanning protocols (80 kV/Sn140 kV and 100 kV/Sn140 kV).

Detection of receiver location and migration after cochlear implantation using 3D rendering of computed tomography.

Objectives: The purpose of this study was to objectively evaluate the position and migration of the cochlear implant receiver and ball electrode using 3-dimensional (3D) rendering of computed tomography.

Study Design: Retrospective case review.

Setting: Tertiary referral center.

Nasal leech infestation: report of seven leeches and literature review.

Nasal leech infestation rarely occurs in society today and it is usually reported as an anecdote. In this study, we present seven nasal leeches in six patients from 1984 to 2008. All patients initially presented with epistaxis.