Optimization of mAs with iterative reconstruction (IR) on dose reduction and image information (phantom study on CT scan facial bone examination)
Journal Title: International Journal of Allied Medical Sciences and Clinical Research - Year 2018, Vol 6, Issue 3
Abstract
The effective dose of CT scan of the facial bone is about 20.2 mGy - 42.1 mGy, the radiation dose is influenced by kV, mAs and pitch which are directly proportional to the image quality. When the dose is lowered the noise will increase, so Iterative Reconstruction (IR) is used to reduce noise and radiation doses. There is a dose reduction in the use of mAs and differences in anatomical information with IR on CT Scan Facial Bone examination. This type of research is a quasi-experimental pretest-posttest design with control. The study sample consisted of 5 variations of mAs in the treatment group and 1 control group sample. Measurements were carried out by univariate tests for radiation doses, differences in anatomical image information on variations of mAs with friedman test, followed by post hoc tests. Assessment of anatomical information is done quantitatively by 2 radiologists. There was a decrease in radiation dose between control and treatment groups, a control group the resulting radiation dose mGy 53.66, the lowest dose treatment group 12.56 mGy at 37.5 mAs variations, differences in anatomy image information (p value <0.05 ) treatment and control groups There was a decrease in radiation dose of routine protocols, use of mAs 37.5 on CT Scan of Facial Bone with IR to produce the lowest dose and optimal anatomical information.
Authors and Affiliations
Widya Mufida
Keywords
Related Articles
- EP ID EP416856
- DOI -
- Views 44
- Downloads 0
An overview on Ebola virus disease (EVD) or Ebola hemorrhagic fever (EHF)
Ebola virus disease (EVD), also known as Ebola haemorrhagic fever, is a severe, often fatal illness in humans. EVD outbreaks have a case fatality rate of up to 90%. EVD outbreaks occur primarily in remote villages in Cen...
Non-Hodgkins lymphoma (DLBCL type) of extranodal site: A rare case report
Non-Hodgkins lymphoma (NHL) are heterogenous group of neoplastic disorder of lymphoid tissue. It can occur as primary lymph node disease or at extranodal sites. Extra-nodal sites of involvement can be gastrointestinal tr...
Prescription monitoring & the pattern of prescribing drugs in pediatric patients done in a periodic study
Pediatric patients, defined as those younger than 18 years. Factors in pediatric patients, including the limitations of commercially available dosage formulations, the unexpected administering of medicines, the general i...
Application of ASIR and Windowing to Image Anatomical Information of CT Scan Stonography
Background One disadvantage CT Scan Stonography is generated imagery has a high noise level. Adaptive Statistical Iterative Reconstruction (ASIR) is the latest in image reconstruction method to minimize noise and improve...
Comparative analysis of phytochemical, antibacterial and antioxidant activity of different extracts of azadirachtaindicaleaves
Introduction The present study was designed to compare phytochemicals, antimicrobial and antioxidant activity of different extracts of leaves of Azardirachtaindica from Himachal Pradesh. In this study, different extracts...