title: Radiation dose optimization and thoracic computed tomography.
abstract: In the past 3 decades, radiation dose from computed tomography (CT) has contributed to an increase in overall radiation exposure to the population. This increase has caused concerns over harmful effects of radiation dose associated with CT in scientific publications as well as in the lay press. To address these concerns, and reduce radiation dose, several strategies to optimize radiation dose have been developed and assessed, including manual or automatic adjustment of scan parameters. This article describes conventional and contemporary techniques to reduce radiation dose associated with chest CT.
authors.affiliation: Division of Thoracic Imaging, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA. Electronic address: ssingh6@partners.org.
authors.forename: Sarabjeet
authors.initials: S
authors.lastname: Singh
authors.forename: Mannudeep K
authors.initials: MK
authors.lastname: Kalra
authors.forename: Ranish Deedar
authors.initials: RD
authors.lastname: Ali Khawaja
authors.forename: Atul
authors.initials: A
authors.lastname: Padole
authors.forename: Sarvenaz
authors.initials: S
authors.lastname: Pourjabbar
authors.forename: Diego
authors.initials: D
authors.lastname: Lira
authors.forename: Jo-Anne O
authors.initials: JA
authors.lastname: Shepard
authors.forename: Subba R
authors.initials: SR
authors.lastname: Digumarthy
mesh_terms: D006801:Humans; D011829:Radiation Dosage; D013902:Radiography, Thoracic / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: CT radiation dose reduction; Chest CT protocol optimization; Dose reduction techniques; Low-dose chest CT