Radiation dose exposure in patients affected by lymphoma undergoing repeat CT examinations: how to manage the radiation dose variability

2017 ◽  
Vol 123 (3) ◽  
pp. 191-201 ◽  
Author(s):  
Fabio Paolicchi ◽  
Luca Bastiani ◽  
Davide Guido ◽  
Antonio Dore ◽  
Giacomo Aringhieri ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Radiation Dose Exposure ◽  
Dose Variability

scholarly journals Low-Dose Computed Tomography for the Optimization of Radiation Dose Exposure in Patients with Crohn’s Disease

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Richard G. Kavanagh ◽  
John O’Grady ◽  
Brian W. Carey ◽  
Patrick D. McLaughlin ◽  
Siobhan B. O’Neill ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Crohn’S Disease ◽  
Image Quality ◽  
Crohn's Disease ◽  
Radiation Dose ◽  
Ionizing Radiation ◽  
Low Dose ◽  
Radiation Doses ◽  
Radiation Dose Exposure ◽  
Ct Technology

Magnetic resonance imaging (MRI) is the mainstay method for the radiological imaging of the small bowel in patients with inflammatory bowel disease without the use of ionizing radiation. There are circumstances where imaging using ionizing radiation is required, particularly in the acute setting. This usually takes the form of computed tomography (CT). There has been a significant increase in the utilization of computed tomography (CT) for patients with Crohn’s disease as patients are frequently diagnosed at a relatively young age and require repeated imaging. Between seven and eleven percent of patients with IBD are exposed to high cumulative effective radiation doses (CEDs) (>35–75 mSv), mostly patients with Crohn’s disease (Newnham E 2007, Levi Z 2009, Hou JK 2014, Estay C 2015). This is primarily due to the more widespread and repeated use of CT, which accounts for 77% of radiation dose exposure amongst patients with Crohn’s disease (Desmond et al., 2008). Reports of the projected cancer risks from the increasing CT use (Berrington et al., 2007) have led to increased patient awareness regarding the potential health risks from ionizing radiation (Coakley et al., 2011). Our responsibilities as physicians caring for these patients include education regarding radiation risk and, when an investigation that utilizes ionizing radiation is required, to keep radiation doses as low as reasonably achievable: the “ALARA” principle. Recent advances in CT technology have facilitated substantial radiation dose reductions in many clinical settings, and several studies have demonstrated significantly decreased radiation doses in Crohn’s disease patients while maintaining diagnostic image quality. However, there is a balance to be struck between reducing radiation exposure and maintaining satisfactory image quality; if radiation dose is reduced excessively, the resulting CT images can be of poor quality and may be nondiagnostic. In this paper, we summarize the available evidence related to imaging of Crohn’s disease, radiation exposure, and risk, and we report recent advances in low-dose CT technology that have particular relevance.

scholarly journals POTENTIAL IMPACT OF NON-INVASIVE FFRCT ON RADIATION DOSE EXPOSURE AND DOWNSTREAM CLINICAL EVENT RATE

2015 ◽  
Vol 65 (10) ◽  
pp. A1126
Author(s):  
Nicolas Bilbey ◽  
Philipp Blanke ◽  
Chesnal Arepalli ◽  
James Min ◽  
Bjarne Norgaard ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Event Rate ◽  
Clinical Event ◽  
Non Invasive ◽  
Radiation Dose Exposure ◽  
Potential Impact

Radiation dose exposure during cardiac and peripheral arteries catheterisation

2006 ◽  
Vol 113 (2) ◽  
pp. 283-284 ◽  
Author(s):  
D. Kocinaj ◽  
A. Cioppa ◽  
G. Ambrosini ◽  
T. Tesorio ◽  
L. Salemme ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Peripheral Arteries ◽  
Radiation Dose Exposure

scholarly journals CRT-300.05 Impact of Table Height on Radiation Dose Exposure for the Female Interventional Cardiologist

2020 ◽  
Vol 13 (4) ◽  
pp. S37
Author(s):  
Logan S. Schwarzman ◽  
David S. Tofovic ◽  
Mladen I. Vidovich
Keyword(s):  
Radiation Dose ◽  
Interventional Cardiologist ◽  
Radiation Dose Exposure

Potential impact of clinical use of noninvasive FFRCT on radiation dose exposure and downstream clinical event rate

2016 ◽  
Vol 40 (5) ◽  
pp. 1055-1060 ◽  
Author(s):  
Nicolas Bilbey ◽  
Philipp Blanke ◽  
Christopher Naoum ◽  
Chesnel Dey Arepalli ◽  
Bjarne Linde Norgaard ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Event Rate ◽  
Clinical Event ◽  
Clinical Use ◽  
Radiation Dose Exposure ◽  
Potential Impact

scholarly journals COMPARISON OF EXPOSURE TO RADIATION DURING PERCUTANEOUS TRANSPEDICULAR PROCEDURES, USING THREE FLUOROSCOPIC TECHNIQUES

2017 ◽  
Vol 16 (2) ◽  
pp. 141-144
Author(s):  
Anderson Nascimento ◽  
Carlos Fernando Pereira da Silva Herrero ◽  
Helton Luiz Aparecido Defino ◽  
Marina Silva Magalhães Viana ◽  
João de Araújo ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Radiation Exposure ◽  
Real Time ◽  
Adult Male ◽  
Percutaneous Access ◽  
Radiation Dose Exposure ◽  
Fluoroscopic Imaging ◽  
Set Up

ABSTRACT Objective: To compare radiation exposure to the surgeon, patient and radiation technician during percutaneous access of the vertebral pedicle, using three different fluoroscopic imaging set up. Methods: Percutaneous access in pedicle T9-L5 of nine adult male cadavers using three different fluoroscopic set ups: standard C-arm, C-arm with L-arm, and the biplanar technique. The radiation dose exposure of the surgeon, radiation technician, and cadaver were measured using dosimeter in each procedure and in real time. Results: The radiation dose absorbed by the surgeon was higher when using the standard C-arm fluoroscopic technique than when using the C-arm with L-arm or the biplanar technique. Conclusions: The use of the C-arm with L-arm, or the biplanar fluoroscopic technique, for percutaneous access to the vertebral pedicle, reduces the radiation exposure of the surgeon compared to the standard C-arm fluoroscopic technique.

Multidetector Computed Tomography Angiography (MD-CTA) of Coronary Artery Bypass Grafts – Update 2017

2017 ◽  
Vol 190 (03) ◽  
pp. 237-249 ◽  
Author(s):  
Florian Jungmann ◽  
Tilman Emrich ◽  
Peter Mildenberger ◽  
Anna Emrich ◽  
Christoph Düber ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery ◽  
Radiation Dose ◽  
Multidetector Computed Tomography ◽  
Computed Tomography Angiography ◽  
Artery Bypass ◽  
Graft Patency ◽  
Bypass Grafts ◽  
Radiation Dose Exposure ◽  
Multidetector Computed Tomography Angiography

Background Coronary artery bypass grafting (CABG) is still an important therapeutic approach in the treatment especially of advanced coronary artery disease. In this study, we elucidate the current role of multidetector computed tomography angiography (MD-CTA) in imaging patients after CABG surgery. Method This study is based on recent reports in the literature (2007 – 2016) on imaging of CABG using 64-slice MD-CT scanners and beyond. We included 13 reports that compared ECG-gated MD-CTA with conventional invasive coronary angiography (ICA) as the reference standard for the assessment of graft patency and for the detection of > 50 % stenoses. These studies had to provide absolute values for true-positive, true-negative, false-positive and false-negative results or at least allow calculation of these numbers. In total, 1002 patients with 2521 bypass grafts were the basis for this review. Results and Conclusion The sensitivity and specificity for the assessment of graft patency or the detection of > 50 % graft stenosis were 97.2 % and 97.5 %, respectively. The negative and positive predictive values were 93.6 % and 99 %, respectively. By using prospective ECG-gating and an increasing pitch factor, the radiation dose exposure declined to 2.4 mSv in the latest reports. ECG-gated MD-CTA provides a fast and reliable, noninvasive method for assessing patients after CABG. The most substantial benefit of the newest CT scanner generations is a remarkable reduction of radiation dose exposure while maintaining a still excellent diagnostic accuracy during recent years. Key Points  Citation Format

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