title: Iterative image reconstruction techniques: cardiothoracic computed tomography applications.
abstract: Iterative image reconstruction algorithms provide significant improvements over traditional filtered back projection in computed tomography (CT). Clinically available through recent advances in modern CT technology, iterative reconstruction enhances image quality through cyclical image calculation, suppressing image noise and artifacts, particularly blooming artifacts. The advantages of iterative reconstruction are apparent in traditionally challenging cases-for example, in obese patients, those with significant artery calcification, or those with coronary artery stents. In addition, as clinical use of CT has grown, so have concerns over ionizing radiation associated with CT examinations. Through noise reduction, iterative reconstruction has been shown to permit radiation dose reduction while preserving diagnostic image quality. This approach is becoming increasingly attractive as the routine use of CT for pediatric and repeated follow-up evaluation grows ever more common. Cardiovascular CT in particular, with its focus on detailed structural and functional analyses, stands to benefit greatly from the promising iterative solutions that are readily available.
authors.affiliation: *Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC ‡Siemens Healthcare Sector, Malvern, PA †Department of Radiology, Konyang University College of Medicine, Daejeon, Korea §Department of Clinical Radiology, University Hospitals LMU, Munich, Germany Departments of ∥Medical Radiology ¶Legal Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
authors.forename: Young Jun
authors.initials: YJ
authors.lastname: Cho
authors.forename: U Joseph
authors.initials: UJ
authors.lastname: Schoepf
authors.forename: Justin R
authors.initials: JR
authors.lastname: Silverman
authors.forename: Aleksander W
authors.initials: AW
authors.lastname: Krazinski
authors.forename: Christian
authors.initials: C
authors.lastname: Canstein
authors.forename: Zsuzsanna
authors.initials: Z
authors.lastname: Deak
authors.forename: Jochen
authors.initials: J
authors.lastname: Grimm
authors.forename: Lucas L
authors.initials: LL
authors.lastname: Geyer
mesh_terms: D000465:Algorithms; D016477:Artifacts; D015897:Comorbidity; D017023:Coronary Angiography / Q000379:methods*; D003331:Coronary Vessels / Q000000981:diagnostic imaging; D006801:Humans; D009765:Obesity / Q000453:epidemiology; D011829:Radiation Dosage; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*