AN ALGORITHM FOR CANCER RECOGNITION OF ULTRASOUND IMAGES

2000 ◽  
Vol 09 (02) ◽  
pp. 265-276 ◽  
Author(s):  
E. A. YFANTIS ◽  
T. LAZARAKIS ◽  
G. BEBIS ◽  
G. M. GALLITANO
Keyword(s):  
Frequency Domain ◽  
Blood Vessels ◽  
Autocorrelation Function ◽  
Blood Supply ◽  
Normal Tissue ◽  
Supply System ◽  
Ultrasound Images ◽  
Preliminary Results ◽  
Ultrasound Signal ◽  
Frequency Domain Properties

An algorithm of cancer recognition of ultrasound images is developed in this paper. As we pointed out in our previous work, in order for cancer to survive it develops its own blood supply system, which is different than the supply system of normal tissue. The velocity of the blood flowing through the cancerous blood vessels is different than the velocity of the blood flowing through blood vessels of normal tissue. Due to this fact the ultrasound signal is absorbed differently in the cancerous areas than in the normal tissue areas. The energy of the signal, the continuity of the signal, the autocorrelation function and frequency domain properties are different in the normal tissue than in cancerous tissue. All of these indicators are weighted here for the purpose of classifying the image of the tissue as being cancerous or non cancerous. Preliminary results based on limited number of ultrasound images show that our method has the ability to recognize cancer in ultrasound images.

Innervation of endoneurial microvessels in human sural nerve

1992 ◽  
Vol 50 (1) ◽  
pp. 920-921
Author(s):  
John L. Beggs ◽  
Peter C. Johnson ◽  
Astrid G. Olafsen ◽  
C. Jane Watkins
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Blood Supply ◽  
Peripheral Nerves ◽  
Sural Nerve ◽  
Nerve Fibers ◽  
Arterial Supply ◽  
Autonomic Nerve ◽  
Vasa Nervorum ◽  
Endoneurial Blood Flow

The blood supply (vasa nervorum) to peripheral nerves is composed of an interconnected dual circulation. The endoneurium of nerve fascicles is maintained by the intrinsic circulation which is composed of microvessels primarily of capillary caliber. Transperineurial arterioles link the intrinsic circulation with the extrinsic arterial supply located in the epineurium. Blood flow in the vasa nervorum is neurogenically influenced (1,2). Although a recent hypothesis proposes that endoneurial blood flow is controlled by the action of autonomic nerve fibers associated with epineurial arterioles (2), our recent studies (3) show that in addition to epineurial arterioles other segments of the vasa nervorum are also innervated. In this study, we examine blood vessels of the endoneurium for possible innervation.

The Future Blood Supply System: A Prognosis

1984 ◽  
Vol 15 (10) ◽  
pp. 679-682 ◽  
Author(s):  
Frans Peetoom ◽  
Suzanne M. Gaynor
Keyword(s):  
Blood Supply ◽  
Supply System ◽  
System A ◽  
The Future

Bacterial Symbionts in Pogonophora

1982 ◽  
Vol 62 (4) ◽  
pp. 889-906 ◽  
Author(s):  
Eve C. Southward
Keyword(s):  
Life History ◽  
Blood Vessels ◽  
Blood Supply ◽  
Posterior Part ◽  
Gram Negative Bacteria ◽  
Bacterial Symbionts ◽  
Small Species ◽  
Gram Negative

Prokaryote organisms, with characteristics of Gram-negative bacteria, occur intracellularly in Pogonophora, as described here for seven small species. The tissue containing the bacteria lies between the two longitudinal blood vessels in the posterior part of the trunk and has a special blood supply. This tissue is probably homologous with the so-called trophosome tissue of the much larger vestimentiferan pogonophores, which also contains bacteria, and the term can be applied to all pogonophores. The presence of such bacteria-containing trophosome tissue may be a characteristic of the phylum. In both large and small species examined the bacteria appear to be chemoautotrophs and probably assist the nutrition and/or metabolism of their hosts. It is not yet certain if the bacterium-containing cells do originate from mesoderm or endoderm, but, if the latter, then the trophosome represents the remains of the missing gut. The trophosome tissue situated internally, and transfer of bacteria must take place early in the life history, in the egg or embryo.

Frequency domain properties of reset systems with multiple reset anticipations

2013 ◽  
Vol 7 (6) ◽  
pp. 796-809 ◽  
Author(s):  
José Antonio González Prieto ◽  
Sebastián Dormido ◽  
Antonio Barreiro
Keyword(s):  
Frequency Domain ◽  
Frequency Domain Properties

Evolution of the nation's blood supply system

Transfusion ◽  
2016 ◽  
Vol 56 (6) ◽  
pp. 1459-1461 ◽  
Author(s):  
Jeffrey McCullough ◽  
J. Mac McCullough ◽  
William J. Riley
Keyword(s):  
Blood Supply ◽  
Supply System

scholarly journals MORPHOLOGY OF BRACHIAL PROFUNDA ARTERY OF THE DOMESTIC REINDEER’S THORACIC LIMB IN ONTOGENESIS

2019 ◽  
pp. 85-91
Author(s):  
M. S. Potapov ◽  
K. R. Nifontov ◽  
A. N. Belogurov ◽  
S. V. Fedotov
Keyword(s):  
Blood Vessels ◽  
Blood Supply ◽  
Distal Part ◽  
Postnatal Period ◽  
Limb Length ◽  
First Year ◽  
Vascular Morphology ◽  
Thoracic Limb ◽  
Absolute Growth ◽  
The Absolute

The authors argue the reindeer’s vascular morphology is not sufficiently investigated. They focus on the distal part of the thoracic and pelvic limbs, which the reindeer steps on the ground and hurts it often, as it leads to necrobacterial lesions in summer. In the postnatal period of the reindeer growth, the most intensive one in the length and diameter of the main arteries is observed in the first year, especially in the first month. During this period, the newborn deer gets into the new conditions of existence and the organs of movement become more and more functional. By the age of 3 - 3.5 years, the growth of the main arteries in length is almost over. The paper explores the features of blood supply of the thoracic limbs of a domestic reindeer, caused by the prominent growth of the second and fifth fingers. The absolute growth of arterial length in newborns and deers aged 0.5 months is 0.6 cm per day. In the following years of life, the length is reduced to 0.03 cm in the reindeers aged 3 y.o. The relative diameter of the arteries to the limb length in the postnatal period decreases from 4.4% in newborns to 3.3% in old deer. The irregularity of changes in the absolute and relative development of the thoracic limb arteries can be explained by different growth of blood vessels, bones, joints and limb muscles.

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