SU-FF-I-25: Feasibility of Estimating Multidetector CT Dose Using BEAMnrc Code

2007 ◽  
Vol 34 (6Part3) ◽  
pp. 2343-2343
Author(s):  
C C Chiang-Hsieh ◽  
Hui-Yu Tsai ◽  
C J Tung
Keyword(s):  
Multidetector Ct ◽  
Ct Dose ◽  
Beamnrc Code

Multidetector CT Dose: Clinical Practice Improvement Strategies From a Successful Optimization Program

2010 ◽  
Vol 7 (8) ◽  
pp. 614-624 ◽  
Author(s):  
Anthony B. Wallace ◽  
Stacy K. Goergen ◽  
Daniel Schick ◽  
Tina Soblusky ◽  
Damien Jolley
Keyword(s):  
Clinical Practice ◽  
Multidetector Ct ◽  
Optimization Program ◽  
Practice Improvement ◽  
Ct Dose ◽  
Improvement Strategies

Relationship between specific organ doses and volumetric CT dose indices in multidetector CT studies

2011 ◽  
Vol 55 (5) ◽  
pp. 493-497 ◽  
Author(s):  
Kosuke Matsubara ◽  
Kichiro Koshida ◽  
Kimiya Noto ◽  
Tetsunori Shimono ◽  
Tomoyuki Yamamoto ◽  
...  
Keyword(s):  
Multidetector Ct ◽  
Organ Doses ◽  
Ct Dose ◽  
Specific Organ ◽  
Volumetric Ct ◽  
Ct Studies

Radiation exposure in multidetector CT: dose comparison between late 1990s and early 2010s in Korea

2013 ◽  
Vol 156 (4) ◽  
pp. 429-435
Author(s):  
M. C. Kim ◽  
D. K. Han ◽  
Y. M. Kim ◽  
C. H. Lim ◽  
K. J. Yeon ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Multidetector Ct ◽  
Ct Dose ◽  
Dose Comparison

scholarly journals Whole Body Low Dose Computed Tomography Using Third-Generation Dual-Source Multidetector With Spectral Shaping: Protocol Optimization and Literature Review

Dose-Response ◽  
2020 ◽  
Vol 18 (4) ◽  
pp. 155932582097313
Author(s):  
Dario Baldi ◽  
Liberatore Tramontano ◽  
Vincenzo Alfano ◽  
Bruna Punzo ◽  
Carlo Cavaliere ◽  
...  
Keyword(s):  
Effective Dose ◽  
Low Dose ◽  
Whole Body ◽  
Dose Length Product ◽  
Osteolytic Lesions ◽  
Subjective Image Quality ◽  
Ct Dose ◽  
Dual Source ◽  
Ct Dose Index ◽  
Low Dose Computed Tomography

For decades, the main imaging tool for multiple myeloma (MM) patient’s management has been the conventional skeleton survey. In 2014 international myeloma working group defined the advantages of the whole-body low dose computed tomography (WBLDCT) as a gold standard, among imaging modalities, for bone disease assessment and subsequently implemented this technique in the MM diagnostic workflow. The aim of this study is to investigate, in a group of 30 patients with a new diagnosis of MM, the radiation dose (CT dose index, dose-length product, effective dose), the subjective image quality score and osseous/extra-osseous findings rate with a modified WBLDCT protocol. Spectral shaping and third-generation dual-source multidetector CT scanner was used for the assessment of osteolytic lesions due to MM, and the dose exposure was compared with the literature findings reported until 2020. Mean radiation dose parameters were reported as follows: CT dose index 0.3 ± 0.1 mGy, Dose-Length Product 52.0 ± 22.5 mGy*cm, effective dose 0.44 ± 0.19 mSv. Subjective image quality was good/excellent in all subjects. 11/30 patients showed osteolytic lesions, with a percentage of extra-osseous findings detected in 9/30 patients. Our data confirmed the advantages of WBLDCT in the diagnosis of patients with MM, reporting an effective dose for our protocol as the lowest among previous literature findings.

scholarly journals Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study

2021 ◽  
Vol 11 (5) ◽  
pp. 2047
Author(s):  
Nor Azura Muhammad ◽  
Zunaide Kayun ◽  
Hasyma Abu Hassan ◽  
Jeannie Hsiu Ding Wong ◽  
Kwan Hoong Ng ◽  
...  
Keyword(s):  
Image Quality ◽  
Multidetector Ct ◽  
Organ Dose ◽  
Quality Metrics ◽  
Ct Scanner ◽  
Image Quality Metrics ◽  
Tube Current ◽  
Significant Difference ◽  
Noise Ratio ◽  
The Impact

The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1–P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.

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