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MAMMOGRAPHY QA

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.

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MAMMOGRAPHY QA

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  1. 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

  2. MQSA National Statistics • FEDERAL LEGISLATION • OCT. 1, 1994 • EQUIPMENT DESIGN & OPERATION STANDARDS (DEDICATED UNITS) • INTENSIVE QUALITY CONTROL PROGRAM WHAT DOES MQSA REPRESENT? __________________

  3. MAMMO & Quality Control • Quality control is an equipment and processing evaluation program in diagnostic imaging centers. • QC involves testing, record keeping and evaluation of imaging equipment and processing • QC Team includes Radiographer/Mammographer, Physicists and Radiologist • QA involves people – scheduling, reports, waiting time and follow up exams • “double reads” See Bushong – CH. ____ PG ____

  4. TASKS Darkroom Clean Processor QC – sensitometry/densitometry and DEVELOPER temp Screen Cleaning VISUAL CHECK Phantom Images Repeat Analysis (should be less than 2% repeat rate - diagnostic rad = 5%) FREQUENCY Daily Weekly Monthly/Quarterly Elements of QC pg 333

  5. SEMIANNUALLY DARKROOM FOG SCREEN/FILM CONTACT COMPRESSION NOT MORE THAN 40 PSI (25 PSI is average) MAMMO QC MONTHLY Checks

  6. QUALITY CONTROL TOOLS • PHANTOM • DIGITAL THERMOMETER • SCREEN CLEANER • LINT FREE CLOTHS • FIXER RETENTION TESTING KIT • CHARTS

  7. Hypo RetentionChecks for what? Fixer left on film – “Archival Properties”

  8. WIRE MESH Checks for what How long should you wait after loading a cassette to use it? 15 min & placed in an upright position

  9. Types of Safelights? • Wratten 6b • GBX • Check for leaks/cracks? How often? Bulb Wattage?

  10. For those still using film…clean crossovers daily Use “dedicated” processor for only mammo

  11. These specks were produced by flakes trapped between the film and the screen – Not calcifications in the breast

  12. PHANTOM IMAGES • WEEKLY - to assure film density, contrast, uniformity and image quality are optimum – Using the SAME cassette and technical factors each time • 4/5 masses • 3/4specks • 4/6 fibers • should be seen • (see pg 500 review book)

  13. REPEAT ANALYSIS • Mammography should be less than 2% Number of repeated film • Repeat Rate = --------------------------- X 100 Total # of films • Diagnostic Radiology = less than 5% • Students = less than 10 %

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