View clinical trials related to Radiation Exposure.
Filter by:The purpose of this study is to compare the incidence rate of leukemia between CT-exposed and CT-unexposed group in patients who underwent appendectomy in South Korea.
The objective of this study is to examine critical aspects of radiation exposure, dose delivery, and systemic yttrium-90 (Y90) exposure related to the infusion of Y90 microspheres for treatment of hepatocellular carcinoma (HCC) and other metastatic liver disease.
This study is conducted by a working group of the French Society of Medical Physics (SFPM). Its main aim is to establish reference dose levels for the most common procedures performed in operating rooms using mobile X-ray systems, hence helping medical physicists and surgeons to evaluate their practice and optimize patient radiation protection. This is a multi-centric prospective study involving 73 medical institutions of different categories (public university hospitals, clinics, centers dedicated to cancer treatment, etc.). It consists on progressively collecting anonymous data for 15 to 30 procedures from a list of 62 types of procedures, belonging to 7 surgery specialties (neurosurgery, orthopedic surgery, digestive surgery, urology, cardiology, vascular surgery and multi-specialty). Collected data include patient BMI and information about the X-ray equipment, the medical procedure and the dosimetric parameters. Data collection doesn't require the access to the patient medical record and doesn't impact his medical care. Proposed dose reference levels will be expressed in terms of KAP (Kerma-Area-Product), fluoroscopy time and air Kerma. Moreover, multiple statistical analyses will be done to investigate the impact of different variables on the procedure X-ray doses.
The primary objective of this study is to determine if a novel lead-based arm board is effective at reducing radiation dose to the operator during invasive cardiac procedures. Secondary objectives are to measure effect on radiation dose to patient and total fluoroscopy (x-ray) time.
Percutaneous transhepatic biliary drainage (PTBD) procedures are associated with an elevated radiation exposure for the patient. In the recently published guideline of the Federal Office for Radiation Protection in Germany diagnostic reference levels (DRLs) for dose area products (DAP) are not defined for PTBD procedures due to insufficient data. The aim of this retrospective study is to give a nation-wide survey on patients radiation exposure in different PTBD procedures considering factors that may have an impact on increased radiation exposure like fluoroscopic-guided versus ultrasound-guided bile duct puncture.
In this Phase 1/2 study, the investigators will conduct a safety and efficacy study of the combination of BMX-001 with standard radiation therapy (RT) and concurrent 5-fluorouracil (5FU)/mitomycin in newly diagnosed Anal Squamous Cell Carcinoma (ASCC) patients. The primary objectives are: Phase 1 - is to determine the maximum tolerated dose (MTD) of BMX-001 in ASCC patients receiving RT and concurrent 5FU/mitomycin chemotherapy.2. For phase II part: To examine the impact of BMX-001 on the overall acute ≥ grade 3 toxicity rate of the normal tissue including rectum, bladder, and skin in combination with RT and concurrent 5FU/mitomycin in treatment of newly diagnosed ASCC patients
The goal of this study is to determine whether use of promotility agents to stimulate gastric peristalsis can reduce fluoroscopy time and procedure time during gastrojejunostomy (GJ) tubes placement in interventional radiology (IR). The investigators hypothesize that increased gastric peristalsis will aid in advancing a guidewire through the pylorus, a time consuming and tedious step required during GJ tube placement. In order to maximize scientific rigor and clinical practice impact, the investigators aim to answer this question through a blinded, randomized, placebo controlled trial. Specific Aim 1: To test the hypothesis that a single dose of IV metoclopramide immediately prior to GJ tube placement reduces the fluoroscopy time required to advance a guidewire through the pylorus. Specific Aim 2: To determine whether a single dose of IV metoclopramide immediately prior to GJ tube placement reduces total procedure fluoroscopy time, air kerma and total procedure time. Specific Aim 3: To assess the safety of a single dose of promotility agent prior to GJ tube placement by assessing rates of adverse events in the periprocedural period in patients receiving IV metoclopramide versus placebo.
Lung cancer screening programs are still discussed in Europe today, and one of the concern is radiation due to iterative CT. The aim of this monocentric, prospective, non randomized study is to compare an ultra low dose chest CT (approaching a two views X ray) versus a standard low dose chest CT for ≥4mm lung nodules detection, and secondary for lung nodule characterization and smoking associated findings (emphysema, bronchial abnormalities and coronary calcifications).
Anal incontinence (AI) is used to englobe the involuntary loss of both fecal material and gases, which can help to improve quality of life. Based on these experiences objectives were drawn: to evaluate the effectiveness of radiofrequency and it's influence on quality of life of patients with anal incontinence, to correlate the anal incontinence severity and to evaluate a sexual function and to verify an influence with radiofrequency treatment. It is a blind randomized clinical trial. For the collection of data it was used a fecal quality of life questionnaire (FIQL). The questionnaire assess the severity of Anal Incontinence (FISI), the degree of patient's satisfaction using a five-point scale (Likert) and a visual analogue EVA scale). It was divided in two groups, in one group it was used radiofrequency and pelvic exercises and in the other turned off radiofrequency (heated glycerin) and pelvic exercises. It was accomplished in eight sections. As a result, it is expected the efficiency of the treatment of radiofrequency in the quality of life, in sexual function and in it's severity.
The purpose of this study is to evaluate the effectiveness of a novel digital image enhancement (DIE) technology in reducing the radiation exposure to both the patient and surgical staff during standard intramedullary nail placement for treatment of hip fractures. Secondarily, to evaluate whether the image quality and reproducibility of desired images can be improved with use of the DIE technology. Finally, to evaluate whether DIE technology reduces total operative time.