Radiation Dose Optimization in CT

McDermott, Shaunagh; Otrakji, Alexi; Kalra, Mannudeep K.

doi:10.1007/174_2017_148

Cited by 2 publications

(3 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tube voltage was directly proportional to the radiation dose, i.e., exponentially the radiation dose changes due to changes in the tube voltage between 2.5-3.1 times. Thus, the higher the tube voltage, the higher the radiation dose 7 . The radiation dose was influenced by several factors, one of which is the setting of the tube voltage (kVp).…”

Section: Discussionmentioning

confidence: 99%

“…In previous studies it was mentioned that the use of SAFIRE was able to reduce noise by 50-60% compared to using FBP. 6,7 The increase in CNR is due to a decrease in noise which is the implication of the use of SAFIRE reconstruction. Setting the higher SAFIRE strength level may result in decreased noise and increased CNR.…”

Section: Discussionmentioning

confidence: 99%

“…[2][3][4][5][6] The tube voltage determines the photon energy and electron intensity used to determine the level of tissue attenuation. 7 Photon energy and electron intensity will affect the radiation dose given to the patient and affect the quality of the image. 8 The decrease in image quality due to the decrease in tube voltage is characterized by the appearance of artifacts, increased noise, and decreased spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Utilization of sinogram affirmed iterative reconstruction on 128 multi slice computed tomography scan to reduce radiation dose and improve image quality on thorax multi slice computed tomography scan: chest phantom study

Fatmayanti

Adi

Kartikasari

2019

Int J Community Med Public Health

View full text Add to dashboard Cite

Background: Thorax MSCT examination is a diagnostic imaging that is capable of displaying both normal and pathological lung and respiratory organs. MSCT examination also has a better level of sensitivity and specificity compared to other modalities, but the radiation exposure given is very high, so the radiation dose given to patients is high. The reduction in radiation dose is very important because of the direct exposure to sensitive tissue. One method of reducing radiation dose is by reducing the tube voltage. However, the decrease in tube voltage causes a decrease in image quality as indicated by increased noise and decreased CNR. To maintain the quality of the image at low tube voltage setting, an IR reconstruction of SAFIRE was used. The purpose of this research is to know the impact of using SAFIRE on dose radiation and image quality of thorax MSCT.Methods: This study was an experimental study with a quasi-experimental study design. The object used was the N-1 Lungman chest phantom in which an artificial tumor was attached. Radiation dose assessment used CTDI value, while image quality assessment used noise and CNR. Data processing was conducted using linear regression test.Results: There was an effect of tube voltage setting and SAFIRE setting on radiation dose and image quality.Conclusions: Tube voltage ssetting and SAFIRE setting had an effect on radiation dose and image quality. Tube voltage setting and SAFIRE strength level setting that were able to provide optimal radiation dose and image quality were tube voltage of 80 kVp and SAFIRE strength levels 3 and 4 (S3 and S4).

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%