PMID: 11339744May 8, 2001Paper

Generalized multi-dimensional adaptive filtering for conventional and spiral single-slice, multi-slice, and cone-beam CT

Medical Physics
M KachelriessWilli Kalender

Abstract

In modern computed tomography (CT) there is a strong desire to reduce patient dose and/or to improve image quality by increasing spatial resolution and decreasing image noise. These are conflicting demands since increasing resolution at a constant noise level or decreasing noise at a constant resolution level implies a higher demand on x-ray power and an increase of patient dose. X-ray tube power is limited due to technical reasons. We therefore developed a generalized multi-dimensional adaptive filtering approach that applies nonlinear filters in up to three dimensions in the raw data domain. This new method differs from approaches in the literature since our nonlinear filters are applied not only in the detector row direction but also in the view and in the z-direction. This true three-dimensional filtering improves the quantum statistics of a measured projection value proportional to the third power of the filter size. Resolution tradeoffs are shared among these three dimensions and thus are considerably smaller as compared to one-dimensional smoothing approaches. Patient data of spiral and sequential single- and multi-slice CT scans as well as simulated spiral cone-beam data were processed to evaluate these new approaches. ...Continue Reading

References

Mar 1, 1992·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·W A Kalender
May 1, 1985·Journal of Computer Assisted Tomography·W A KalenderC Suess
May 8, 2000·Medical Physics·M KachelriessW A Kalender
Sep 30, 2000·Radiology·R R Hattery
Jan 1, 1995·IEEE Transactions on Medical Imaging·B Sahiner, A E Yagle
Jun 1, 1981·IEEE Transactions on Pattern Analysis and Machine Intelligence·J O Eklundh, A Rosenfeld

❮ Previous
Next ❯

Citations

Mar 3, 2004·European Radiology·Mathias Prokop
Mar 23, 2013·European Radiology·M M LellM Kachelriess
Oct 12, 2012·Radiological Physics and Technology·Issei MoriKazuhiro Iinuma
Jun 29, 2013·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Zhaoying BianWufan Chen
Feb 25, 2003·European Journal of Radiology·Mathias Prokop
Feb 25, 2003·European Journal of Radiology·Sabine FenchelElmar M Merkle
Sep 27, 2003·European Journal of Radiology·Gerald PärtanWalter Hruby
Jun 14, 2003·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·Paul J KeallRadhe Mohan
Dec 14, 2011·Physics in Medicine and Biology·Ting XiaPaul E Kinahan
Jun 5, 2012·Investigative Radiology·Michael M LellMarc Kachelriess
Jan 24, 2008·AJR. American Journal of Roentgenology·Takeshi KuboHiroto Hatabu
Nov 22, 2007·AJR. American Journal of Roentgenology·John D MacKenzieFrank J Rybicki
Jul 24, 2003·AJR. American Journal of Roentgenology·Denis TackPierre Alain Gevenois
May 20, 2004·AJR. American Journal of Roentgenology·Wolfgang RömerNorbert Avril
Oct 1, 2009·Imaging in Medicine·Lifeng YuCynthia H McCollough
Apr 6, 2007·Nihon Hoshasen Gijutsu Gakkai zasshi·Mikio KimuraTakeo Nozawa
May 30, 2008·Nihon Hoshasen Gijutsu Gakkai zasshi·Motohiro TabuchiYoshitaka Morikawa
Mar 3, 2011·Medical Physics·Chen XuLuc Beaulieu
Mar 18, 2004·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Dirk-Alexander SennstWilli A Kalender
Apr 10, 2012·Medical Physics·Esther MeyerMarc Kachelrieß
Jul 2, 2002·Radiology·Rogier E van GelderJaap Stoker
Sep 13, 2006·Medical Physics·Matthieu Bal, Lothar Spies
Nov 13, 2004·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Julia F Barrett, Nicholas Keat
Nov 26, 2010·Medical Physics·Esther MeyerMarc Kachelriess
Feb 26, 2008·Medical Physics·Klaus J EngelGünter Zeitler
Nov 7, 2012·Medical Physics·Donald A RobertsAditya S Pandey
Mar 8, 2013·Medical Physics·Stanislav ZabićKevin M Brown
Mar 8, 2013·Medical Physics·Gengsheng L Zeng, Alex Zamyatin
Dec 11, 2013·Medical Physics·Steven Bartolac, David Jaffray
Feb 25, 2009·Medical Physics·Jing WangLei Xing
Apr 22, 2009·Medical Physics·Willi A KalenderSabrina V Vollmar

❮ 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.