1. COMPUTED TOMOGRAPHY ONVALVULAR HEART
DISEASENURHIKMAWATIMUZAKKIR AMIRCARDIOLOGY AND VASCULAR
DEPARTMENTMEDICAL FACULTY HASSANUDDIN UNIVERSITY 2. INTRODUCTION
Multislice computed tomography (CT) is a newmodality for
noninvasive evaluation of cardiacvalves, with new clinical
applications arisingover the past years Computerized tomography (CT
scan) combinesa series of X-ray views taken from manydifferent
angles and computer processing tocreate cross-sectional images of
the bones andsoft tissues inside your body. 3.
HISTORY19711974-197619801990the development ofmulti-slice
scanners,with 4-slice scannersand 0.5 second scanCT became
widelyavailableFirst clinical CTTappliedGodfrey Hounsfield,from
Limited,Londonand James Ambrose 4. BASIC PRINCIPLES 5. CT SCAN
MACHINES 6. CT SCAN PARAMETERSlice Thickness
RangeVolumeInvestigationEksposisionFactorField of View Gantry
TiltMatrixReconstructionAlgorithmReconstructionWindow Level 7.
COMPUTED TOMOGRAPHYFOR VALVULAR VIEW To assess valvular function by
multisliceCT, the acquisition of a CT dataset duringmultiple entire
cardiac cycle is necessary First, retrospective ECG gating, in
spiralmode, is the technique of first choice Second, prospective
dual step ECG-triggeringhas been introduced, a sequentialscan
technique 8. AORTIC STENOSIS Transthoracicechocardiography is
theclinical ref- erence modalityto establish the diagnosisof aortic
stenosis accuracy for hemodynamicestimation of the effectiveaortic
valve orifice islimited, e.g., in thepresence of low-flow,
low-pressuregradient aorticstenosis, or in case ofreduced cardiac
output 9. Clinical applications for measurement of the aorticvalve
area first, in patients referred for coronary CTangiography, if
valve calcification is present, theaortic valve area may be measure
because Second, patients who require a second imagingmodality for
accurate sizing of the aor- tic valvearea, e.g., in case of pending
cardiac surgery, AVAaortic valve area 10. BICUSPID AORTA CT can
also identifybicuspid or tricuspidvalve mor- phology 11. AORTIC
REGURGITATION 12. MITRAL STENOSIS 13. MITRAL REGURGITATION 14.
MITRAL VALVE PROLAPSE 15. INFECTIVE ENDOCARDITIS 16. PROSTHETIC
VALVE 17. CONCLUSION Multislice computed tomography (CT) is a new
modality for noninvasiveevaluation of cardiac valves, with new
clinical applications arising over thepast years. In patients with
aortic stenosis scheduled for planning of aortic valveimplantation
(TAVI), CT is the modality of choice and recommended byconsensus
documents of the SCCT (Society of Cardiac ComputedTomography
Society) as well as the Surgical Societies (AATS, ACCF, SCAI,and
STS) [89] 18. THANK YOUCARDIOLOGY AND VASCULAR DEPARTMENTMEDICAL
FACULTY HASSANUDDIN UNIVERSITY
