medical image equipment theory

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1、MEDICALIMAGINGEQUIPMENTTHEORYRichardAstonyrsatom0olliCbeuTr0xamelBnciePorscteteDMEDICALIMAGINGEQUIPMENTTHEORYRichardAstonengineeringABCresearch33BarneyStreetWilkes-BarrePennsylvania,U.S.A.18702(570)829-3163E-mail:astonrj@yahoo.comWebSite:or

2、ex.htm>Copyright?2004byRichardAston.Allrightsreserved.Maynotbecopiedordistributedwithoutsignedwrittenpermissionoftheauthor.DISCLAIMER:Thismaterialisderivedfromtheliteratureasindicatedinthereferences.Itismeantforeducationalpurposesonly.Theauthorregretsanyomissions,misunderstandingsorerro

3、rsanddisclaimsanyliabilityforthem,anddisclaimsresponsibilityforanyimplicationstheseideasmighthaveforexistingequipment,itsdesign,use,ormaintenance.PREFACEThisbookismeanttoserveaseducationalmaterialsforclinicalandbiomedicalengineeringandbiomedicalengineeringtechnologystudentsinterestedinu

4、nderstandingmedicalimagingequipment.Itisdirectedatthesenior/graduatelevel.Onebasicquestionatthecenteroftheworkis,howisitthatonecantakeapictureofaslicethroughthebodywithoutopeningtheskin?AclearandsystematicanswerisgivenwiththehelpofFourierTransformmathematics,alongwithdiscussionsofthephy

5、sicalprinciplesofthehardwareinvolved.Thisapproachhasgreateducationalvaluebecauseitisstraightforwardlogicandgivesthestudentabasisfordesigningandmaintainingthisequipment.HowevertheFourierTransformapproachisnotalwaysused,andisoftenreplacedwithcomputeriterationandstatisticaltechniques.Astud

6、yofthesecomputeralgorithmsisbeyondthescopeofthepresentwork.Thusourfocushereismoreonthehardwarethanonthesoftwareofsystemanalysis.Classroompresentationmaterialssuchaslideshowofthefiguresinthetextalongwithconciseexplainationsisprovidedontheauthor’swebsite:or

7、net/~astonr/index.htm>.Studentend-of-chapterexercisesandasolutionsmanualforinstructorsareavailableatABCengineeringresearch,33BarneySt.Wilkes-Barre,PA,U.S.A.18702.(astonrj@yahoo.com).MEDICALIMAGINGEQUIPMENTTHEORYRichardAstonJune,2005TABLEOFCONTENTSChapter1MagneticResonanceImagin