mammography qa
DESCRIPTION
MAMMOGRAPHY QA. PURPOSE OF QC. Quality Assurance, Quality Control & Equipment Bushong Ch. 19 & 20. ASSURES OPTIMUM PATIENT CARE by avoiding unnecessary repeat exposures due to artifacts, processing problems and equipment failure. Rev. Spring 2009/2010. MQSA National Statistics. - PowerPoint PPT PresentationTRANSCRIPT
1 MAMMOGRAPHY QAMAMMOGRAPHY QA
Quality Assurance, Quality Quality Assurance, Quality ControlControl
& Equipment& Equipment
Bushong Bushong Ch. 19 & 20Ch. 19 & 20
Rev. Spring 2009/2010
PURPOSE OF QCPURPOSE OF QCASSURES OPTIMUM PATIENT CAREASSURES OPTIMUM PATIENT CARE
by avoiding unnecessary repeat by avoiding unnecessary repeat exposures due to artifacts, exposures due to artifacts, processing problems and processing problems and
equipment failureequipment failure
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MQSA National Statistics
Total annual mammography procedures reported, as of March 1, 20101
38,057,377
Percent of inspections with no violation 80.2%
Certification statistics, as of March 1, 2010 12,623
Certified facilities with FFDM2 units / Accredited FFDM units
5,402 / 7,963
•FEDERAL LEGISLATION•OCT. 1, 1994•EQUIPMENT DESIGN & OPERATION STANDARDS (DEDICATED UNITS)•INTENSIVE QUALITY CONTROL PROGRAM
WHAT DOES MQSA REPRESENT? __________________
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Quality controlQuality control is an equipment and processing is an equipment and processing evaluation program in diagnostic imaging evaluation program in diagnostic imaging centers.centers.
QC involves testingQC involves testing, record keeping and , record keeping and evaluation of imaging equipment and processingevaluation of imaging equipment and processing
QC Team includesQC Team includes Radiographer/Mammographer, Physicists and Radiographer/Mammographer, Physicists and RadiologistRadiologist
QA involves peopleQA involves people – scheduling, reports, waiting – scheduling, reports, waiting time and follow up examstime and follow up exams
““double reads” double reads”
MAMMO & Quality MAMMO & Quality ControlControl
See Bushong – CH. ____ PG ____
44 Elements of QC Elements of QC pg 333pg 333
TASKSTASKS Darkroom CleanDarkroom Clean Processor QC – Processor QC –
sensitometry/densitometrsensitometry/densitometry and DEVELOPER tempy and DEVELOPER temp
Screen CleaningScreen Cleaning VISUAL CHECKVISUAL CHECK Phantom ImagesPhantom Images Repeat Analysis Repeat Analysis (should (should
be less than 2% repeat rate - be less than 2% repeat rate - diagnostic rad = 5%)diagnostic rad = 5%)
FREQUENCYFREQUENCY DailyDaily
WeeklyWeekly
Monthly/Monthly/QuarterlyQuarterly
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MAMMO QCMAMMO QCSEMIANNUALLYSEMIANNUALLY DARKROOM FOGDARKROOM FOG SCREEN/FILM SCREEN/FILM
CONTACTCONTACT COMPRESSIONCOMPRESSION
NOT MORE THAN NOT MORE THAN 40 PSI40 PSI
(25 PSI(25 PSI
is average)is average)
MONTHLY Checks
66 QUALITY CONTROL QUALITY CONTROL
TOOLSTOOLS PHANTOMPHANTOM DIGITAL DIGITAL
THERMOMETERTHERMOMETER SCREEN CLEANERSCREEN CLEANER LINT FREE CLOTHSLINT FREE CLOTHS FIXER RETENTION FIXER RETENTION
TESTING KITTESTING KIT CHARTSCHARTS
77 Hypo RetentionHypo Retention
Checks for what?Checks for what?
Fixer left on film Fixer left on film – “Archival Properties”– “Archival Properties”
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WIRE MESH WIRE MESH
Checks for what
How long should you wait after loading a cassette to use it?
15 min & placed in an upright position
99 Types of Types of
Safelights?Safelights?
Wratten 6bWratten 6b GBXGBX Check for leaks/cracks?Check for leaks/cracks?
How often?
Bulb Wattage?
1010 For those still using film…For those still using film…
clean crossovers dailyclean crossovers daily
Use “dedicated” Use “dedicated” processor for only processor for only
mammomammo
1111
These specks were produced by flakes trapped between the film and the screen –
Not calcifications in the breast
DAILY QUALITY CONTROL
DARKROOM CLEANLINESS
WIPE COUNTERSDUST VENTS & LIGHTS
PROCESSORQUALITY CONTROL
Sensitometer stripDensitometer step
PHANTOM IMAGEAssures quality control of Radiographic Image
&graph results
VISUAL VISUAL
CHECKLISTCHECKLIST
MONTHLYMONTHLY
FIXER FIXER RETENTION RETENTION
MONTHLYMONTHLY
REPEATREPEAT
ANALYSISANALYSIS
DARKROOMDARKROOM
FOGFOG
SEMI-SEMI-ANNUALANNUAL
FILM/SCREENFILM/SCREEN
CONTACTCONTACT
SEMI-ANNUALSEMI-ANNUAL
COMPRESSIOCOMPRESSIONN
(25 PSI)(25 PSI)
SEMI-ANNUALSEMI-ANNUAL
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PHANTOM IMAGESPHANTOM IMAGES WEEKLY - to assure WEEKLY - to assure
film density, contrast, film density, contrast, uniformity and image uniformity and image quality are optimum – quality are optimum – Using the SAME Using the SAME cassette and technical cassette and technical factors each timefactors each time
4/5 masses 4/5 masses 3/4specks 3/4specks 4/6 fibers4/6 fibers should be seenshould be seen (see pg 500 review book)(see pg 500 review book)
1313 REPEAT ANALYSISREPEAT ANALYSIS
Mammography should be less than Mammography should be less than 22%%
Number of repeated filmNumber of repeated film Repeat Rate = --------------------------- X 100Repeat Rate = --------------------------- X 100 Total # of filmsTotal # of films
Diagnostic Radiology = less than 5%Diagnostic Radiology = less than 5% Students = less than 10 %Students = less than 10 %
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