title: Coronary computed tomography angiography with 320-row detector and using the AIDR-3D: initial experience.
abstract: Coronary computed tomography angiography (coronary CTA) is a powerful non-invasive imaging method to evaluate coronary artery disease. Nowadays, coronary CTA estimated effective radiation dose can be dramatically reduced using state-of-the-art scanners, such as 320-row detector CT (320-CT), without changing coronary CTA diagnostic accuracy. To optimize and further reduce the radiation dose, new iterative reconstruction algorithms were released recently by several CT manufacturers, and now they are used routinely in coronary CTA. This paper presents our first experience using coronary CTA with 320-CT and the Adaptive Iterative Dose Reduction 3D (AIDR-3D). In addition, we describe the current indications for coronary CTA in our practice as well as the acquisition standard protocols and protocols related to CT application for radiation dose reduction. In conclusion, coronary CTA radiation dose can be dramatically reduced following the "as low as reasonable achievable" principle by combination of exam indication and well-documented technics for radiation dose reduction, such as beta blockers, low-kV, and also the newest iterative dose reduction software as AIDR-3D.
authors.forename: Roberto
authors.initials: R
authors.lastname: Sasdelli Neto
authors.forename: Cesar Higa
authors.initials: CH
authors.lastname: Nomura
authors.forename: Ana Carolina Sandoval
authors.initials: AC
authors.lastname: Macedo
authors.forename: Danilo Perussi
authors.initials: DP
authors.lastname: Bianco
authors.forename: Fernando Uliana
authors.initials: FU
authors.lastname: Kay
authors.forename: Gilberto
authors.initials: G
authors.lastname: Szarf
authors.forename: Gustavo Borges da Silva
authors.initials: GB
authors.lastname: Teles
authors.forename: Hamilton
authors.initials: H
authors.lastname: Shoji
authors.forename: Pedro Vieira
authors.initials: PV
authors.lastname: Santana Netto
authors.forename: Rodrigo Bastos Duarte
authors.initials: RB
authors.lastname: Passos
authors.forename: Rodrigo Caruso
authors.initials: RC
authors.lastname: Chate
authors.forename: Walther Yoshiharu
authors.initials: WY
authors.lastname: Ishikawa
authors.forename: João Paulo Bacellar Costa
authors.initials: JP
authors.lastname: Lima
authors.forename: Marcelo Assis
authors.initials: MA
authors.lastname: Rocha
authors.forename: Vinícius Neves
authors.initials: VN
authors.lastname: Marcos
authors.forename: Bruna Bonaventura
authors.initials: BB
authors.lastname: Failla
authors.forename: Marcelo Buarque de Gusmão
authors.initials: MB
authors.lastname: Funari
mesh_terms: D017023:Coronary Angiography / Q000295:instrumentation / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging*; D006801:Humans; D061330:Multidetector Computed Tomography / Q000295:instrumentation / Q000379:methods*; D011829:Radiation Dosage; D011857:Radiographic Image Interpretation, Computer-Assisted