A5004033595- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Radiology practices and education
- Ultrasound in Clinical Applications
- Medical Imaging Techniques and Applications
- Effects of Radiation Exposure
- Advanced Radiotherapy Techniques
- Digital Radiography and Breast Imaging
- Appendicitis Diagnosis and Management
- Pediatric Urology and Nephrology Studies
- Healthcare cost, quality, practices
- Radioactivity and Radon Measurements
- Cardiac Imaging and Diagnostics
- Cardiac, Anesthesia and Surgical Outcomes
- Congenital Diaphragmatic Hernia Studies
- Intestinal Malrotation and Obstruction Disorders
- Glycogen Storage Diseases and Myoclonus
- Pelvic and Acetabular Injuries
- Congenital Heart Disease Studies
- Medical Malpractice and Liability Issues
- Radiation Therapy and Dosimetry
- Pleural and Pulmonary Diseases
- Tracheal and airway disorders
- Atomic and Subatomic Physics Research
- Lysosomal Storage Disorders Research
Duke University
2012-2025
Advanced Imaging Research (United States)
2009-2025
Duke Medical Center
2014-2025
Duke University Hospital
2015-2025
Duke Children's Hospital & Health Center
2007-2025
Duke University Health System
2003-2025
Digital Research Alliance of Canada
2023
Lucile Packard Children's Hospital
2019-2021
Stanford University
2019-2021
American College of Radiology
2008-2021
Imaging studies that use ionizing radiation are an essential tool for the evaluation of many disorders childhood. Ionizing is used in radiography, fluoroscopy, angiography, and computed tomography scanning. Computed particular interest because its relatively high dose wide use. Consensus statements on risk suggest it reasonable to act assumption low-level may have a small causing cancer. The medical community should seek ways decrease exposure by using doses as low reasonably achievable...
Adjustments of the standard helical CT protocols for adults can result in reduced radiation dose when imaging children. It is radiologist's responsibility to critically evaluate techniques used at their institution. should be made choose appropriate mA and pitch
Our objective was to determine whether adjustments related patient age are made in the scanning parameters that determinants of radiation dose for helical CT pediatric patients.This prospective investigation included all body (chest and abdomen) examinations (n = 58) neonates, infants, children 32) referred from outside institutions whom radiologic consultation requested. Information recorded tube current, kilovoltage, collimation, pitch. Examinations were arbitrarily grouped on basis...
Paediatric patients have a higher average risk of developing cancer compared with adults receiving the same dose. The longer life expectancy in children allows more time for any harmful effects radiation to manifest, and organs tissues are sensitive radiation. This publication aims provide guiding principles radiological protection referring clinicians clinical staff performing diagnostic imaging interventional procedures paediatric patients. It begins brief description basic concepts...
AJR:194, April 2010 This article suggests 10 steps that radiologists and radiologic technologists, with the assistance of their medical physicist, can take to obtain good quality CT images while properly managing radiation dose for children undergoing CT. The first six ideally should be completed before performing any on a pediatric patient. final four address unique consideration given each scanned
Children with heart disease are frequently exposed to imaging examinations that use ionizing radiation. Although radiation exposure is potentially carcinogenic, there limited data on cumulative and the associated cancer risk. We evaluated effective dose of from all estimate lifetime attributable risk in children disease.Children ≤6 years age who had previously undergone 1 7 primary surgical procedures for at a single institution between 2005 2010 were eligible study. Exposure...
Background Comprehensive assessments of the frequency and associated doses from radiologic nuclear medicine procedures are rarely conducted. The use these population-based radiation dose increased remarkably 1980 to 2006. Purpose To determine change in per capita exposure United States 2006 2016. Materials Methods U.S. National Council on Radiation Protection Measurements conducted a retrospective assessment for 2016 compared results previously published data year Effective values were...
The purpose of our study was to determine radiation dose the fetus at early gestation when contemporary MDCT scanners are used for common clinical indications.Anthropomorphic phantoms were constructed reflect a pregnant woman. Thermoluminescence dosimeters (TLDs) and metal oxide semiconductor field effect transistor (MOSFET) detectors placed in appropriate locations real-time exposure 0 3 months' gestation. Imaging performed on 16-MDCT scanner using current institutional CT protocols: renal...
The purpose of our study was to evaluate the amount radiation dose reduction and its effect on image quality when using an in-plane bismuth breast shield for multidetector CT (MDCT) chest abdomen in female pediatric patients.Fifty consecutive MDCT examinations (chest, 29; abdomen, 21) patients (mean age, 9 years; range, 2 months-18 years) were performed with a 2-ply (1.7 g per square centimeter) (three sizes accommodate varying sizes) overlying patient's breasts. images evaluated perceptible...
OBJECTIVE. The purpose of our study was to compare organ and effective doses for small-bowel follow-through (SBFT) abdominopelvic MDCT in adults with Crohn's disease, retrospectively evaluate the number radiographic examinations performed disease indications, identify those patients undergoing serial better delineate use radiology diagnosis clinical management disease.
Purpose: Current methods for estimating and reporting radiation dose from CT examinations are largely patient‐generic; the body size hence variation patient to is not reflected. Furthermore, current protocol designs rely on as a surrogate risk of cancer incidence, neglecting strong dependence age gender. The purpose this study was develop method patient‐specific examinations. Methods: included two patients (a 5‐week‐old female 12‐year‐old male patient), who underwent 64‐slice (LightSpeed...
The purpose of this study was to develop and validate an automated method measure noise in clinical CT examinations.An algorithm developed images. To assess its validity, the global level compared with image measured using subtraction technique anthropomorphic phantom. further values from patient images obtained by observer study. Finally, utility shown assessing variability across scanner models for abdominopelvic examinations performed 2358 patients.The agreed well phantom-based...
To develop diagnostic reference ranges (DRRs) and a method for an individual practice to calculate site-specific doses computed tomographic (CT) scans of the abdomen or pelvis in children on basis body width (BW).This HIPAA-compliant multicenter retrospective study was approved by institutional review boards participating institutions; informed consent waived. In 939 pediatric patients, CT were reviewed 499 (53%) male 440 (47%) female patients (mean age, 10 years). Doses from 954 obtained...
Four patients with cystic fibrosis (CF) were examined combined hyperpolarized helium 3-enhanced and conventional proton magnetic resonance (MR) imaging. After inhalation of the polarized 3He gas, single breath-hold, gradient-echo images (resonant frequency 3He) obtained to depict lung ventilation. Conventional T2-weighted fast spin-echo (hydrogen) also morphologic abnormalities. successfully reproducibly generated that showed both abnormalities and, often more extensive, ventilation MR...
Limiting CT radiation dose is especially critical when imaging children. The purpose of our study was to modify and test an accurate safe tool for evaluating systematic reduction abdominal multidetector (MDCT) in pediatric patients.After validating the computer-simulation technique with a water phantom, we subjected original digital scanning data 26 contrast-enhanced MDCT scans (120 mA) obtained infants children (age range, 1 month-9 years; mean age, 3.1 years) simulated tube current (100,...