A strategy to decrease partial scan reconstruction artifacts in myocardial perfusion CT: Phantom and in vivo evaluation

• Published in: Medical physics (Lancaster) Vol. 39; no. 1; pp. 214 - 223
• Main Authors: Ramirez-Giraldo, Juan C., Yu, Lifeng, Kantor, Birgit, Ritman, Erik L., McCollough, Cynthia H.
• Format: Journal Article
• Language: English
• Published: United States American Association of Physicists in Medicine 01.01.2012
• Subjects: Algorithms; Animals; Blood flow in cardiovascular system; blood flow measurement; blood vessels; Cardiac-Gated Imaging Techniques - methods; cardiovascular system; Computed tomography; Computerised tomographs; computerised tomography; Coronary Angiography - methods; Digital computing or data processing equipment or methods, specially adapted for specific applications; Female; functional imaging; Heart; Heart and lung dynamics; Image data processing or generation, in general; image reconstruction; linear filters; Measuring blood flow; Measuring volume, volume flow, mass flow, or liquid level; Metering by volume; Medical image artifacts; Medical image noise; medical image processing; Medical image reconstruction; Medical imaging; Medical X‐ray imaging; muscle; myocardial perfusion; partial scan reconstruction artifacts; Perfusion Imaging - methods; phantoms; Phantoms, Imaging; Radiation Imaging Physics; Radiographic Image Enhancement - methods; Radiographic Image Interpretation, Computer-Assisted - methods; Reconstruction; Reproducibility of Results; Sensitivity and Specificity; Spatial filtering; Spatial resolution; Swine; Tomography, X-Ray Computed - methods; computed tomography; linear filters; myocardial perfusion; functional imaging; partial scan reconstruction artifacts

Purpose: Partial scan reconstruction (PSR) artifacts are present in myocardial perfusion imaging using dynamic multidetector computed tomography (MDCT). PSR artifacts appear as temporal CT number variations due to inconsistencies in the angular data range used to reconstruct images and compromise th...