CT Radiation Dose and Image Quality Optimization Using a Porcine Model.
Purpose To evaluate potential radiation dose savings and resultant image quality effects with regard to optimization of commonly performed computed tomography (CT) studies derived from imaging a porcine (pig) model. Methods Imaging protocols for 4 clinical CT suites were developed based on the lowes...
| Publicado en: | Radiologic Technology Vol. 85; no. 2; pp. 127 - 137 |
|---|---|
| Autores principales: | , , |
| Formato: | diagnostic images pictorial research tables/charts Journal Article |
| Publicado: |
American Society of Radiologic Technologists
Nov/Dec2013
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=91736444&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 91736444 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00338397 39J jtl: Radiologic Technology issn: 00338397 maglogo: N pubinfo: dt: Nov/Dec2013 vid: 85 iid: 2 pid: 7052 pub: American Society of Radiologic Technologists place: Alburquerque, New Mexico artinfo: ui: 91736444 91736444 104150885 91736444 ppf: 127 ppct: 10 formats: fmt: @attributes: type: P tig: atl: CT Radiation Dose and Image Quality Optimization Using a Porcine Model. aug: au: Zarb, Francis McEntee, Mark F. Rainford, Louise affil: Lecturer, Department of Radiography, Faculty of Health Sciences, University of Malta sug: subj: Radiation Dosage Methods Tomography, X-Ray Computed Methods Models, Anatomic Protocols Animal Studies Swine Phantoms, Imaging Radiation, Ionizing Mediterranean Islands Surveys Questionnaires Radiology Service Regression P-Value Descriptive Statistics Summated Rating Scaling Scales Data Analysis Software Confidence Intervals Kruskal-Wallis Test Mann-Whitney U Test kappa Statistic Head Radiation Effects Abdomen Radiation Effects Thorax Radiation Effects ab: Purpose To evaluate potential radiation dose savings and resultant image quality effects with regard to optimization of commonly performed computed tomography (CT) studies derived from imaging a porcine (pig) model. Methods Imaging protocols for 4 clinical CT suites were developed based on the lowest milliamperage and kilovoltage, the highest pitch that could be set from current imaging protocol parameters, or both. This occurred before significant changes in noise, contrast, and spatial resolution were measured objectively on images produced from a quality assurance CT phantom. The current and derived phantom protocols were then applied to scan a porcine model for head, abdomen, and chest CT studies. Further optimized protocols were developed based on the same methodology as in the phantom study. The optimization achieved with respect to radiation dose and image quality was evaluated following data collection of radiation dose recordings and image quality review. Relative visual grading analysis of image quality criteria adapted from the European guidelines on radiology quality criteria for CT were used for studies completed with both the phantom-based or porcine-derived imaging protocols. Results In 5 out of 16 experimental combinations, the current clinical protocol was maintained. In 2 instances, the phantom protocol reduced radiation dose by 19% to 38%. In the remaining 9 instances, the optimization based on the porcine model further reduced radiation dose by 17% to 38%. Conclusion The porcine model closely reflects anatomical structures in humans, allowing the grading of anatomical criteria as part of image quality review without radiation risks to human subjects. This study demonstrates that using a porcine model to evaluate CT optimization resulted in more radiation dose reduction than when imaging protocols were tested solely on quality assurance phantoms. pubtype: Academic Journal doctype: diagnostic images pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|