RGRMS-2016 CT imaging performance testing phantom

RGRMS-2016typeCTimagingPerformance testing phantom(hereinafter referred to asRGRMSmold) is for medical useCTA new type of detection and evaluation equipment developed by image quality control management. The phantom can standardize, fast and accurate detection and evaluationmultiple rowsCTscanSystem imaging performance. As a head phantom for stable quality control monitoring in medical institutions, its appearance is as close as possible to that of China.peopleAvailable in adult, child and infant head sizes, easy to operate and takes up less machine time.  

CTscansystemscanRGRMSmodel reconstructionofDICOMimagedatacopyto the lightplate/UplatePost-off-machine analysis and calculation，Naked eye interpretation, softwareanalysisInterpretationEither way,320row or256rowCTSweep the whole field in one circle,320/256layer (or32layer) images are collected simultaneously and observed and analyzed layer by layer. Analysis software developed and introducedCTObjective measurement algorithm for low-contrast detectability and spatial resolution of scanned images, namely water model statistical methodLCDand tungsten wire (or tungsten beads) mold measurementMTF. The model is alsoCTscanDose Optimization Study Setup with Convenient Attachments-Water modelcentral dose testingsettube。

RGRMSwater mold+Comprehensive module two-stage performancenude modelstructureinto, plusDifferent outer diameterandmaterial jacket, for users to chooseA、B、C、D、EFive different purpose phantoms:

A.outer diameterØ170mmPerformancenude model+outer diameterØ180mm、5mmThick skull simulation layer+outer diameterØ186mm、3mmThick outer skull tissue simulated layer.Available forThe acceptance, status and stability testing of testing service units is also suitable for medical institutions to conduct various testing and research;

B.outer diameterØ170mmPerformancenude model+Abdominal contouring water mold cover for testingCTsystemScan the abdomenimaging performance；

C. outer diameterØ155mmPerformancenude model+outer diameterØ160mm、2.5mmThick skull simulation layer, suitable for1.5-7.0Quality control and research on imaging performance of head scans for children aged 10 to 20;

D．outer diameterØ100-140mmThe naked model is suitable for quality control and research on infant head scanning imaging performance.

E. outer diameterØ200mm, the water cross section of the water model section is not less thanØ188mm, the rest of the parameter test modules are the same as outsidediameterØ170mmPerformancenude model. substituteCatphanFor acceptance, status inspection and imaging performance studies。

RGRMSAbdominal performance test of mold removal. Place the mold on theCTIn addition to the examination bed, the other phantoms are hung on the edge of the special storage box, probed out of the examination bed, and sent to the center of the scanning field.

RGRMSThe mold water mold section is used to detect waterCTvalue, uniformity, noise and low contrast detectabilityLCD(Subjective interpretation with naked eyes and objective analysis with statistical software), software analysis is available with one click; it can be used after inserting a special casing in the center of the water modelTLDDetect the axial length of the scanning center position95mmScan center dose distribution within the range.

RGRMSModule synthesis module segments are used to detect spatial resolutionMTF(Tungsten wire or tungsten beads, software calculates line pairs/cm) and square holes (withmmis the unit, judged by the naked eye, the minimum side length of the square hole0.2mm, step0.1mm); spiral bead mold to measure layer thickness,Lower limit of measurement0.5mmNaked eye interpretation/Software analysis is available;CTvalue linear-1000~+1300 HU，8Materials, software measurement can be completed with one click.

RGRMSThe key dimensions of the in-mold module are certified by the China Institute of Metrology.

(Scan of the phantom:1）water model diagram,CTvalue,Sdand uniformity;2) 5mmlayer thickness, includingWbeads;3) software interface)