PMID: 1199790Sep 1, 1975Paper

Layer formation in narrow beam rotation radiography

Acta Radiologica: Diagnosis
U Welander

Abstract

The layer formation in rotation narrow beam radiography is analysed mathematically. It is shown that the blurring, and consequently the layer formation, is due primarily to the width of the beam; no blurring and no layer formation occur if the beam is of negligible width. The blurring is significantly affected by the magnification factor in the specific central projection typical of narrow beam rotation methods, where the rotation centre serves as an imaginary focus.

References

Sep 1, 1974·Acta Radiologica: Diagnosis·K A Sämfors, U Welander
Nov 1, 1974·Acta Radiologica: Diagnosis·K A Sämfors, U Welander
Oct 3, 1972·British Dental Journal·M B Edge, C Champion
Jan 1, 1972·Dento Maxillo Facial Radiology·O Nyström, U Welander
May 1, 1974·Acta Radiologica: Diagnosis·U Welander
Jul 1, 1967·Oral Surgery, Oral Medicine, and Oral Pathology·J E Phillips
Sep 1, 1967·Oral Surgery, Oral Medicine, and Oral Pathology·I A Brueggemann
Jun 1, 1970·Australian Dental Journal·E J Barton
Mar 1, 1971·Oral Surgery, Oral Medicine, and Oral Pathology·L R Manson-Hing
Apr 1, 1954·Acta Radiologica·Y V PAATERO
Aug 1, 1961·The Journal of the American Dental Association·J W KUMPULA
Jul 1, 1960·The British Journal of Radiology·S BLACKMAN

❮ Previous
Next ❯

Citations

Aug 1, 1989·Dento Maxillo Facial Radiology·U WelanderW D McDavid
Jan 1, 1987·Dento Maxillo Facial Radiology·U WelanderC R Morris
Nov 1, 1977·Acta Radiologica: Diagnosis·U Welander, G Wickman
Jan 1, 1978·Acta Radiologica: Diagnosis·K A SämforsG Wickman
Nov 1, 1975·Acta Radiologica: Diagnosis·A SjöblomU Welander
Jan 1, 1978·Acta Radiologica: Diagnosis·A Sjöblom, U Welander

❮ 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.