Practical problems of determining liver volume from computed tomographic transverse sections

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
P Fritschy, G Schneekloth

Abstract

The article confronts the traditional methods of volume calculation ("layer method"); addition of partial volumes derived from the thickness of the individual strata and their area) with a new method of including the longitudinal extension of the liver into the calculations ("topographic method"). Using a model of a liver with defined volume as basis (continuous examination every 8 mm.), various constellations of layer sequence to be expected in CT practice, are simulated and the volumes calculated from the changed data by means of both methods. It has been found that calculation of volume according to the topographic method is superior to the layer method if the respiratory position of the patient changes from layer to layer during an examination and/or if the distances between the individual layers are irregular in the course of an examination. Recommendations are given for the procedure to be followed during CT examination carried out for computing the liver volume, and for a liver volume calculation to be based on a CT examination which has already been performed.

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.

Related Papers

Zhurnal vyssheĭ nervnoĭ deiatelnosti imeni I P Pavlova
A O Roik, G A Ivanizkiĭ
© 2021 Meta ULC. All rights reserved