Phase versus amplitude sorting of 4D-CT data

Journal of Applied Clinical Medical Physics
Nicole WinkTimothy D Solberg

Abstract

Image quality of CT scans suffers when objects undergo motion. Respiratory motion causes artifacts, which prevents adequate visualization of anatomy. Four-dimensional CT (4D-CT) is a method in which image reconstruction of moving objects is retrospectively gated according to the recorded phase information of the monitored motion pattern. Although several groups have investigated the use of 4D-CT in radiotherapy, little has been detailed with regard to the sorting method. We present a new retrospective gating technique with sorting based on the amplitude of the motion trace. This method is compared to previously developed methods that sort based on phase. A 16-slice CT scanner (Sensation 16, Siemens Medical Solutions, Erlangen, Germany) was used to acquire images of two phantoms on a motion platform moving in two dimensions. The motion was monitored using a strain gauge inserted inside an adjustable belt. A 180 degrees interpolation was used for reconstruction after gating. Significant improvement using the amplitude-sorting technique was observed, particularly when testing nonperiodic motion functions.

References

Oct 2, 1998·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·L EkbergT Landberg
Sep 7, 2000·International Journal of Radiation Oncology, Biology, Physics·H ShiratoK Miyasaka
Sep 7, 2000·International Journal of Radiation Oncology, Biology, Physics·T ArugaH Ito
Aug 23, 2001·International Journal of Radiation Oncology, Biology, Physics·C W StevensR Komaki
Nov 13, 2001·International Journal of Radiation Oncology, Biology, Physics·P GiraudJ M Cosset
Jul 4, 2002·International Journal of Radiation Oncology, Biology, Physics·Yvette SeppenwooldeKazuo Miyasaka
Feb 5, 2003·Physics in Medicine and Biology·S S VedamR Mohan
Sep 27, 2003·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·Holger HofJürgen Debus
Oct 8, 2003·International Journal of Radiation Oncology, Biology, Physics·Katharina E SixelPatrick C F Cheung
Jan 31, 2004·Seminars in Radiation Oncology·Paul Keall
Mar 6, 2004·Medical Physics·Tinsu PanGeorge T Y Chen
Mar 6, 2004·International Journal of Radiation Oncology, Biology, Physics·Aaron M AllenJames M Balter
Dec 14, 2004·International Journal of Radiation Oncology, Biology, Physics·Nicholas KochCraig W Stevens
Jan 18, 2005·Medical Physics·Isabelle M Gagné, Don M Robinson
May 18, 2005·Medical Physics·Eike RietzelGeorge T Y Chen

❮ Previous
Next ❯

Citations

Jul 8, 2010·European Journal of Nuclear Medicine and Molecular Imaging·Florian BütherKlaus P Schäfers
Apr 10, 2012·Medical Physics·Yuwei ChiDi Yan
Jun 2, 2011·Medical Physics·Dongfeng HanXiaodong Wu
Apr 28, 2011·Medical Physics·Zhen TianSteve B Jiang
Mar 3, 2012·Medical Physics·Irina VergalasovaFang-Fang Yin
Oct 23, 2010·Medical Physics·Chi LiuPaul Kinahan
Jun 24, 2009·Medical Physics·Mohammad DawoodKlaus P Schäfers
Apr 2, 2011·Medical Physics·Chiara GianoliGuido Baroni
Apr 14, 2010·Medical Physics·Joseph SantoroGig S Mageras
Jan 10, 2012·Medical Physics·Kevin I KauweloaWilliam Y Song
Dec 11, 2013·International Journal of Computer Assisted Radiology and Surgery·Mirko MarxHeinz Handels
Jan 12, 2011·European Journal of Nuclear Medicine and Molecular Imaging·Wouter van ElmptMichel Ollers
Nov 21, 2009·Physics in Medicine and Biology·Chi LiuPaul E Kinahan
Jan 26, 2010·Journal of Medical Physics·Bhudatt Paliwal, Dinesh Tewatia
Jul 13, 2012·Zeitschrift für medizinische Physik·Geoffrey D Hugo, Mihaela Rosu
Jul 31, 2012·Seminars in Nuclear Medicine·Valentino BettinardiMaria Carla Gilardi
Aug 17, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Valentino BettinardiCristina Messa
May 1, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Long HuangRobert D Timmerman
Jul 23, 2008·International Journal of Radiation Oncology, Biology, Physics·Adam C RiegelTinsu Pan
Apr 1, 2008·International Journal of Radiation Oncology, Biology, Physics·Eduard SchreibmannLei Xing
Nov 27, 2007·International Journal of Radiation Oncology, Biology, Physics·Jeffrey R OlsenParag J Parikh
Jun 29, 2007·Computer Methods and Programs in Biomedicine·Jiali WangAnthony McGoron
Jun 1, 2007·Journal of Vascular and Interventional Radiology : JVIR·Julia K LocklinBradford J Wood
Mar 31, 2007·International Journal of Radiation Oncology, Biology, Physics·Matthias GuckenbergerMichael Flentje
Jan 2, 2007·International Journal of Radiation Oncology, Biology, Physics·Tianfang Li, Lei Xing
Oct 25, 2014·IEEE Transactions on Medical Imaging·Bernhard FuerstAli Kamen
Nov 19, 2015·Australasian Physical & Engineering Sciences in Medicine·Tine Bjørn NielsenCarsten Brink
Apr 10, 2016·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Sheeba ThengumpallilRaphaël Moeckli
Aug 4, 2015·Medical Physics·Chiara PaganelliMarco Riboldi
Jul 3, 2015·Medical Physics·Joyita DuttaGeorges El Fakhri
May 17, 2015·Medical Physics·Yam Cheung, Amit Sawant

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.