Regional variance of visually lossless threshold in compressed chest CT images: lung versus mediastinum and chest wall

European Journal of Radiology
Tae Jung KimKyung Won Lee

Abstract

To estimate the visually lossless threshold (VLT) for the Joint Photographic Experts Group (JPEG) 2000 compression of chest CT images and to demonstrate the variance of the VLT between the lung and mediastinum/chest wall. Eighty images were compressed reversibly (as negative control) and irreversibly to 5:1, 10:1, 15:1 and 20:1. Five radiologists determined if the compressed images were distinguishable from their originals in the lung and mediastinum/chest wall. Exact tests for paired proportions were used to compare the readers' responses between the reversible and irreversible compressions and between the lung and mediastinum/chest wall. At reversible, 5:1, 10:1, 15:1, and 20:1 compressions, 0%, 0%, 3-49% (p<.004, for three readers), 69-99% (p<.001, for all readers), and 100% of the 80 image pairs were distinguishable in the lung, respectively; and 0%, 0%, 74-100% (p<.001, for all readers), 100%, and 100% were distinguishable in the mediastinum/chest wall, respectively. The image pairs were less frequently distinguishable in the lung than in the mediastinum/chest wall at 10:1 (p<.001, for all readers) and 15:1 (p<.001, for two readers). In 321 image comparisons, the image pairs were indistinguishable in the lung but distingui...Continue Reading

References

Sep 1, 1992·Radiographics : a Review Publication of the Radiological Society of North America, Inc·P Sprawls
Mar 1, 1983·Journal of Epidemiology and Community Health·F D Liddell
Aug 1, 1997·Journal of Digital Imaging·K PersonsV Savcenko
Mar 12, 1998·Radiology·B J EricksonN J Hangiandreou
May 31, 2003·Radiology·Jane P KoJennifer M Martino

❮ Previous
Next ❯

Citations

Jul 24, 2008·AJR. American Journal of Roentgenology·Vasundhara BajpaiHeung Sik Kang
Jul 24, 2008·AJR. American Journal of Roentgenology·Kil Joong KimYoung Hoon Kim
Apr 22, 2009·AJR. American Journal of Roentgenology·Pamela T JohnsonElliot K Fishman
Apr 22, 2009·AJR. American Journal of Roentgenology·Jonathan R DillmanRamiro J Hernandez
Jul 22, 2009·AJR. American Journal of Roentgenology·Bingsheng HuangPek-Lan Khong
Apr 22, 2009·AJR. American Journal of Roentgenology·Jonathan R Dillman, Ramiro J Hernandez
May 22, 2009·AJR. American Journal of Roentgenology·Raghunandan VikramChaan S Ng
Feb 23, 2010·AJR. American Journal of Roentgenology·Andrew B RosenkrantzElizabeth M Hecht
Jan 23, 2010·AJR. American Journal of Roentgenology·Andrew B RosenkrantzBachir Taouli
Jan 23, 2010·AJR. American Journal of Roentgenology·Ekta MaheshwariChristine Massey
Aug 14, 2009·Medical Physics·Kil Joong KimRafal Mantiuk
May 15, 2013·Academic Radiology·Mark F McEnteeKevin L Tay
Mar 26, 2015·Journal of Digital Imaging·Jean-François Pambrun, Rita Noumeir

❮ 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.