Assessment of Patient Doses in CR Examinations Throughout a Large Health Region.
Optimization and standardization of radiographic procedures in a health region minimizes patient exposure while producing diagnostic images. This report highlights the dose variation in common computed radiography (CR) examinations throughout a large health region. The RadChex cassette was used to m...
| Publicado en: | Journal of Digital Imaging Vol. 25; no. 1; pp. 189 - 196 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Springer Nature
Feb2012
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| 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=104634133&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104634133 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Feb2012 vid: 25 iid: 1 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104634133 70531103 10.1007/s10278-011-9390-1 NLM21547516 PMC3264727 104634133 ppf: 189 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Assessment of Patient Doses in CR Examinations Throughout a Large Health Region. aug: au: Thakur, Yogesh Bjarnason, Thorarin Hammerstrom, Kevin Marchinkow, Lorie Koch, Tim Aldrich, John affil: Medical Imaging, Vancouver Coastal Health Authority, 899 West 12th Avenue Vancouver Canada sug: subj: Radiation Dosage Quality Control (Technology) Radiography, Computed Human Surveys Catchment Area (Health) Diagnostic Imaging Standards ab: Optimization and standardization of radiographic procedures in a health region minimizes patient exposure while producing diagnostic images. This report highlights the dose variation in common computed radiography (CR) examinations throughout a large health region. The RadChex cassette was used to measure the radiation exposure at the table or wall bucky in 20 CR rooms, in seven hospitals, using CR technology from two vendors. Exposures were made to simulate patient exposure (21 cm polymethyl methacrylate) under standard conditions for each bucky: 81 kVp at 100 cm for anteroposterior abdomen table bucky exposures (180 cm for posteroanterior chest wall bucky exposures), using the left, the right, or the center automatic exposure control (AEC) cells. Protocol settings were recorded. An average of 37% variation was found between AEC chambers, with a range between 4% and 137%. A 60% difference in dose was discovered between manufacturers, which was the result of the manufacture's image processing algorithm and subsequently corrected via software updates. Finally, standardizing AEC cell selection during common chest examinations could reduce patient dose by up to 30%. In a large health region, variation in exam protocols can occur, leading to unnecessary patient dose from the same type of examination. Quality control programs must monitor exam protocols and AEC chamber calibration in CR to ensure consistent, minimal, patient dose, regardless of hospital or CR vendor. Furthermore, this report highlights the need for communication between radiologists, technologists, medical physicist, service engineers, and manufacturers required to optimize CR protocols. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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