scholarly journals Comparative study between radiology and ultrasound in the evaluation of extracardiac thoracic diseases in dogs and cats

2015 ◽  
Vol 45 (12) ◽  
pp. 2207-2213
Author(s):  
Sâmara Turbay Pires ◽  
Maria Cristina Ferrarini Nunes Soares Hage ◽  
Ana Carolina Brandão de Campos Fonseca Pinto ◽  
Stefano Carlo Filippo Hagen
Keyword(s):  
Differential Diagnosis ◽  
Doppler Ultrasound ◽  
Ultrasound Examination ◽  
Power Doppler ◽  
Radiographic Examination ◽  
Additional Information ◽  
Thoracic Diseases ◽  
Pulmonary Parenchyma ◽  
Supply Pattern

ABSTRACT: This study compared radiographic and B-mode and Doppler ultrasound exams of the thoracic cavity, excluding the heart, in canine and feline species, in which the radiographs revealed the formation of a potential acoustic window. The objectives were to demonstrate the advantages and limitations of each technique and to determine whether the additional information influenced the differential diagnosis as well as the outcome of each case. The advantages of B-mode ultrasonography included: better qualitative and quantitative evaluation of pleural effusions, an improved ability to determine whether a nodule was solid or cystic and easier determination of the location in the pulmonary parenchyma. The Power Doppler ultrasound evaluated the blood supply pattern of the nodules and masses and differentiated between vessels and fluid bronchogram. A limitation of the ultrasound examination was the need to be guided by the previous radiography. The advantages of the radiographic examination included the possibility of localizing pulmonary lesions at any depth in the absence of a pleural effusion and providing a panoramic view of the extent of the thoracic disease. The ultrasound examination influenced the differential diagnosis in 18 (62.06%) cases and influenced the outcome of 8 (27.58%) cases.

The role of transvaginal power Doppler ultrasound in the differential diagnosis of benign intrauterine focal lesions

2015 ◽  
Vol 42 (4) ◽  
pp. 533-540 ◽  
Author(s):  
Ebru Cogendez ◽  
Meryem Kurek Eken ◽  
Nuray Bakal ◽  
Ismet Gun ◽  
Ecmel Isik Kaygusuz ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Power Doppler Ultrasound ◽  
Focal Lesions

Basic set of experiments for determination of mechanical properties of sand

2014 ◽  
Vol 62 (1) ◽  
pp. 129-137
Author(s):  
A. Sawicki ◽  
J. Mierczyński
Keyword(s):  
Mechanical Properties ◽  
Soil Mechanics ◽  
Physical And Mechanical Properties ◽  
Local Strain ◽  
Initial State ◽  
Laboratory Equipment ◽  
Additional Information ◽  
Basic Set ◽  
Initial Anisotropy

Abstract A basic set of experiments for the determination of mechanical properties of sands is described. This includes the determination of basic physical and mechanical properties, as conventionally applied in soil mechanics, as well as some additional experiments, which provide further information on mechanical properties of granular soils. These additional experiments allow for determination of steady state and instability lines, stress-strain relations for isotropic loading and pure shearing, and simple cyclic shearing tests. Unconventional oedometric experiments are also presented. Necessary laboratory equipment is described, which includes a triaxial apparatus equipped with local strain gauges, an oedometer capable of measuring lateral stresses and a simple cyclic shearing apparatus. The above experiments provide additional information on soil’s properties, which is useful in studying the following phenomena: pre-failure deformations of sand including cyclic loading compaction, pore-pressure generation and liquefaction, both static and caused by cyclic loadings, the effect of sand initial anisotropy and various instabilities. An important feature of the experiments described is that they make it possible to determine the initial state of sand, defined as either contractive or dilative. Experimental results for the “Gdynia” model sand are shown.

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