scholarly journals Uso da termografia infravermelha como auxílio diagnóstico de neoplasia mamária canina

2018 ◽  
Vol 1 (43) ◽  
pp. 76
Author(s):  
Wellida Karinne Lacerda Clementino ◽  
José Gabriel Gonçalves Lins ◽  
Adílio Santos De Azevedo
Keyword(s):  
High Frequency ◽  
Direct Relationship ◽  
Histopathological Examination ◽  
Chronological Order ◽  
Mammary Tumours ◽  
Different Types ◽  
Epithelial Tumours ◽  
The Masses ◽  
Veterinary Hospital ◽  
Mammary Neoplasia

<p>This paper aimed to evaluate the use of thermography as an aid method for the early diagnosis of breast cancer in female dogs assisted at the Veterinary Hospital of IFPB Campus Sousa. Five female dogs diagnosed clinically with mammary neoplasia were selected for this study. The protocol was listed in the chronological order of medical care: anamnesis, physical examination of the tumours, thermography, surgery and collection of material for histopathological examination. Patients underwent thermographic examination with the Flir® Thermovisor equipment, model T420. The examination took place in an acclimatized room and upon permission of the animal’s tutor. 60% were pure breed female dogs. Tumours were observed in three non-castrated female dogs and two castrated ones. The masses exhibited three macroscopic presentation patterns. The majority of them were nodular, followed by pendular and flat. Masses in animal 1 showed no increase in volume and there was no difference in temperature between the breast affected by neoplasia and healthy one, whereas for animals 2, 3, 4 and 5 there was an increase in temperature of 0.6ºC, 1.0°C, 1.2°C and 2.3°C, respectively. Three different types of carcinoma were found according to histopathological examination: complex carcinoma, tubular and tubulo-papillary carcinoma. In 100% of the animals the lesions were malignant, reporting high frequency of malignant epithelial tumours in the canine species. Based on these results, it was concluded that no direct relationship was found between the thermographic imaging pattern among the types of malignant mammary tumours in female dogs. Therefore, the conception of new studies on the matter is necessary due to the small number of animals on this research, where it was not possible to affirm the capacity of the thermography in the early differentiation of the malignancy of the masses. Future researches in oncology will promote a better understanding of the pathological aspects related to mammary tumours.</p>

scholarly journals The diagnostic value of ultrasonography in detection of different types of thyroid nodules

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Ahmed Youssef ◽  
Mohamed Hesham Abd-Elmonem ◽  
Rania Ahmed Mohamed Ghazy ◽  
Mohamed Mahmoud El Shafei ◽  
Mohamed Zahran
Keyword(s):  
Thyroid Nodule ◽  
High Frequency ◽  
Thyroid Nodules ◽  
Histopathological Examination ◽  
Final Diagnosis ◽  
Diagnostic Value ◽  
Needle Aspiration ◽  
High Frequency Ultrasound ◽  
Different Types ◽  
Sensitivity Specificity

Abstract Background This article discusses the importance of high frequency ultrasonography in detection of different types of thyroid nodules considering only the histopathological examination of the surgical specimens as the final diagnosis. We studied 50 patients referred to ENT clinic with a thyroid nodule. Ultrasonography and ultrasound-guided fine-needle aspiration biopsy were done to all the patients. Thyroid surgery was done according to FNAB results. Result From 50 thyroid specimens, the US could predict the malignancy in 18 specimens. By histopathology, only 16 specimens were malignant, and 34 were benign thyroid disease. The sensitivity, specificity, and accuracy of US were 100%, 94.12%, and 96% respectively. The most suspicious ultrasongraphic feature was microcalcification followed by taller than wider (T ˃ W). Conclusion High frequency ultrasound is a very important tool to predict the malignant possibility during thyroid nodule evaluation.

Multidirectional War and Paramilitarism

2018 ◽  
Author(s):  
Tomas Balkelis
Keyword(s):  
National Identity ◽  
Local Level ◽  
Local Population ◽  
Cycle Of Violence ◽  
Different Types ◽  
The Masses ◽  
Socially Motivated

This chapter, by following the course of military actions in Lithuania in 1919, explores the emergence of various military and paramilitary groups that engaged in different types of violence. The focus here is on the entanglement of three types of actors: those that performed state-sanctioned violence; those that acted as semi-independent paramilitary agents, and those that engaged in ethnically or socially motivated violence on a local level. The ability of the Lithuanian government to survive the series of military engagements in 1919 enhanced its legitimacy among the local population, and laid the foundation for a modern Lithuanian identity among the masses. Yet the new state and national identity were shaped in a continuous cycle of violence, social strife, mobilization, and militarization of society.

A radiopathological classification of dural tail sign of meningiomas

2012 ◽  
Vol 117 (4) ◽  
pp. 645-653 ◽  
Author(s):  
Song-tao Qi ◽  
Yi Liu ◽  
Jun Pan ◽  
Silky Chotai ◽  
Lu-xiong Fang
Keyword(s):  
Tumor Cells ◽  
Histopathological Examination ◽  
Who Grade ◽  
Simpson Grade ◽  
Mri Studies ◽  
Dural Tail Sign ◽  
Significant Difference ◽  
Different Types ◽  
Dural Tail

Object The completeness of meningioma resection depends on the resection of dura mater invaded by the tumor. The pathological changes of the dura around the tumor can be interpreted by evaluating the dural tail sign (DTS) on MRI studies. The goal of this study was to clarify the pathological characteristics of the DTSs, propose a classification based on the histopathological and radiological correlation, and identify the invasive range of tumor cells in different types of DTS. Methods The authors retrospectively reviewed 179 patients with convexity meningiomas who underwent Simpson Grade I resection. All patients underwent an enhanced MRI examination preoperatively. The convexity meningiomas were dichotomized into various subtypes in accordance with the 2007 WHO classification of tumors of the CNS, and the DTS was identified based on the Goldsher criteria. The range of resection of the involved dura was 3 cm from the base of the tumor, which corresponded with the length of DTS on MRI studies. Histopathological examination of dura at 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 cm from the base of the tumor was conducted, and the findings were correlated with the preoperative MRI appearance of the DTS. Results A total of 154 (86%) of 179 convexity meningiomas were classified into WHO Grade I subtype, including transitional (44 [28.6%] of 154), meningothelial (36 [23.4%] of 154), fibrous (23 [14.9%] of 154), psammomatous (22 [14.3%] of 154), secretory (10 [6.5%] of 154), and angiomatous (19 [12.3%] of 154). The other 25 (14%) were non–Grade I (WHO) tumors, including atypical (12 [48%] of 25), anaplastic (5 [20%] of 25), and papillary (8 [32%] of 25). The DTS was classified into 5 types: smooth (16 [8.9%] of 179), nodular (36 [20.1%] of 179), mixed (57 [31.8%] of 179), symmetrical multipolar (15 [8.4%] of 179), and asymmetrical multipolar (55 [30.7%] of 179). There was a significant difference in distribution of DTS type between Grade I and non–Grade I tumors (p = 0.004), whereas the difference was not significant among Grade I tumors (0.841) or among non–Grade I tumors (p = 0.818). All smooth-type DTSs were encountered in Grade I tumors, and the mixed DTS (52 [33.8%] of 154) was the most common type in these tumors. Nodular-type DTS was more commonly seen in non–Grade I tumors (12 [48%] of 25). Tumor invasion was found in 88.3% (158 of 179) of convexity meningiomas, of which the range of invasion in 82.3% (130 of 158) was within 2 cm and that in 94.9% (150 of 158) was within 2.5 cm. The incidence of invasion and the range invaded by tumor cells varied in different types of DTS, and differences were statistically significant (p < 0.001). Conclusions Nodular-type DTS on MRI studies might be associated with non–Grade I tumors. The range of dural resection for convexity meningiomas should be 2.5 cm from the tumor base, and if this extent of resection is not feasible, the type of DTS should be considered. However, for skull base meningiomas, in which mostly Simpson Grade II resection is achieved, the use of this classification should be further validated. The classification of DTS enables the surgeon to predict preoperatively and then to achieve the optimal range of dural resection that might significantly reduce the recurrence rate of meningiomas.

The Response of Nonlinear Systems to Modulated High-Frequency Input

1993 ◽  
Author(s):  
S. A. Nayfeh ◽  
A. H. Nayfeh
Keyword(s):  
Nonlinear Systems ◽  
Natural Frequency ◽  
Amplitude Modulation ◽  
Carrier Frequency ◽  
High Frequency ◽  
Degree Of Freedom ◽  
Resonant Excitation ◽  
Single Degree Of Freedom ◽  
Single Degree ◽  
Different Types

Abstract We study the response of a single-degree-of-freedom system with cubic nonlinearities to an amplitude-modulated excitation whose carrier frequency is much higher than the natural frequency of the system. The only restriction on the amplitude modulation is that it contain frequencies much lower than the carrier frequency of the excitation. We apply the theory to different types of amplitude modulation and find that resonant excitation of the system may occur under some conditions.

Discriminating intra-parasequence stratigraphic units from two-dimensional quantitative parameters

2021 ◽  
Vol 91 (8) ◽  
pp. 887-911
Author(s):  
Manuel F. Isla ◽  
Ernesto Schwarz ◽  
Gonzalo D. Veiga ◽  
Jerónimo J. Zuazo ◽  
Mariano N. Remirez
Keyword(s):  
High Frequency ◽  
Two Dimensional ◽  
Facies Associations ◽  
Different Types ◽  
Lateral Extent ◽  
Successive Wave ◽  
Shell Bed ◽  
Definition Of ◽  
High Resolution Sequence Stratigraphy ◽  
Bounding Surfaces

ABSTRACT The intra-parasequence scale is still relatively unexplored territory in high-resolution sequence stratigraphy. The analysis of internal genetic units of parasequences has commonly been simplified to the definition of bedsets. Such simplification is insufficient to cover the complexity involved in the building of individual parasequences. Different types of intra-parasequence units have been previously identified and characterized in successive wave-dominated shoreface–shelf parasequences in the Lower Cretaceous Pilmatué Member of the Agrio Formation in central Neuquén Basin. Sedimentary and stratigraphic attributes such as the number of intra-parasequence units, their thickness, the proportions of facies associations in the regressive interval, the lateral extent of bounding surfaces, the degree of deepening recorded across these boundaries, and the type and lateral extent of associated transgressive deposits are quantitatively analyzed in this paper. Based on the analysis of these quantified attributes, three different scales of genetic units in parasequences are identified. 1) Bedset complexes are 10–40 m thick, basin to upper-shoreface successions, bounded by 5 to 16 km-long surfaces with a degree of deepening of one to three facies belts. These stratigraphic units represent the highest hierarchy of intra-parasequence stratigraphic units, and the vertical stacking of two or three of them typically forms an individual parasequence. 2) Bedsets are 2–20 m thick, offshore to upper-shoreface successions, bounded by up to 10 km long surfaces with a degree of deepening of zero to one facies belt. Two or three bedsets stack vertically build a bedset complex. 3) Sub-bedsets are 0.5–5 m thick, offshore transition to upper-shoreface successions, bounded by 0.5 to 2 km long surfaces with a degree of deepening of zero to one facies belt. Two or three sub-bedsets commonly stack to form bedsets. The proposed methodology indicates that the combination of thickness with the proportion of facies associations in the regressive interval of stratigraphic units can be used to discriminate between bedsets and sub-bedsets, whereas for higher ranks (bedsets and bedset complexes) the degree of deepening, lateral extent of bounding surfaces, and the characteristics of associated shell-bed deposits become more effective. Finally, the results for the Pilmatué Member are compared with other ancient and Holocene examples to improve understanding of the high-frequency evolution of wave-dominated shoreface–shelf systems.

Further Observations on Noise Levels in Infant Incubators

PEDIATRICS ◽  
1979 ◽  
Vol 63 (1) ◽  
pp. 100-106 ◽  
Author(s):  
Fred H. Bess ◽  
Barbara Finlayson Peek ◽  
Judy J. Chapman
Keyword(s):  
High Frequency ◽  
Impulse Noise ◽  
Life Support ◽  
Acoustic Analysis ◽  
Frequency Region ◽  
Noise Levels ◽  
Storage Unit ◽  
High Frequency Region ◽  
Different Types ◽  
Opening And Closing

The purpose of this study was to conduct an acoustic analysis of incubator noise under two conditions: when the incubator was associated with different types of life-support equipment; and when impulse noise was created by striking the side of the incubator or by opening and closing the doors of the storage unit. It was found that the life-support equipment increased the overall noise levels of incubators by as much as 15 to 20 dB. Much of this increased energy was in the high frequency region. Impulse signals created by striking the side of the incubator ranged from 130 to 140 dB. A representative impulse for opening the incubator was 92.8 dB, whereas closing the door produced a peak amplitude of 114 dB.

Anatomy of Aerial RootWood of Sonneratia Caseolaris (L.) Engler (Sonneratioideae)

IAWA Journal ◽  
1989 ◽  
Vol 10 (4) ◽  
pp. 374-378 ◽  
Author(s):  
R. Vijendra Rao ◽  
Babulal Sharma ◽  
R. Dayal
Keyword(s):  
High Frequency ◽  
Intercellular Spaces ◽  
Very High Frequency ◽  
Growth Rings ◽  
Axial Parenchyma ◽  
Sonneratia Caseolaris ◽  
Plant Body ◽  
Different Types ◽  
Very High

The anatomy of the aerial rootwood of Sonneratia caseolaris (L.) Engler showed distinct growth rings demarcated by fibres, vessels occurring in very high frequency, with simple and multiperforate plates containing druses and stellate crystals, different types of intervessel pits with vestures, absence of axial parenchyma, presence of very fine homogeneous rays, septate fibres and intercellular spaces between fibres. A comparison of aerial rootwood and stemwood revealed many quantitative differences between these two parts of the plant body.

scholarly journals Pathoprevalence of infectious diseases of goat emphasizing on endoparasitic lesions at Dinajpur Sadar

2017 ◽  
Vol 3 (2) ◽  
pp. 254-266 ◽  
Author(s):  
Mahfuza Akther ◽  
Md Nazrul Islam ◽  
Md Haydar Ali ◽  
SM Harun ur Rashid ◽  
Md Anowarul Haque
Keyword(s):  
Infectious Diseases ◽  
Histopathological Examination ◽  
Clinical History ◽  
Summer Season ◽  
Control Measures ◽  
Parasitic Diseases ◽  
Bacterial Diseases ◽  
Laboratory Techniques ◽  
Veterinary Hospital ◽  
Common Laboratory

This study was conducted to investigate the pathoprevalence of different infectious diseases of goat at Sadar upazilla of Dinajpur district in Bangladesh. Infectious cases were recorded with respect to breed, sex, age and season from Upazilla Veterinary Hospital and District Veterinary Hospital, Sadar, Dinajpur during July, 2014 to June, 2015 and diagnosis was made on the basis of clinical history, clinical examinations and common laboratory techniques with histopathological examination. A total of 2139 infectious diseases were founded and categorized by the causal agents where the highest prevalence was observed in mixed infectious diseases (46.06%) followed by viral diseases (28.93%), internal parasitic diseases (9.77%), external parasitic diseases (8.42%), bacterial diseases (3.00%), protozoal diseases (2.01%) and lowest was in fungal diseases (1.83%). The prevalence of infectious disease was significantly higher at Jamunapari (55.12%) than Black Bengal (44.88%). Female goats were more susceptible (54.32%) than male (45.68%). The prevalence was varied according to age and highest was in G-1 (45.48%) followed by G-2 (36.48%) and G-3 (17.68%). Summer season (33.60%) was common for infections followed by winter (33.51%) and rainy (32.89%). Most of the internal lesions were produced by the endoparasitic infections which were examined microscopically. These results indicate that, the prevalence of various infectious diseases in the goats was higher at Sadar, Dinajpur thus, there is a need for an appropriate control measures in order to prevent and minimize the loss caused by such diseases and this study may help to develop strategies against the infectious diseases of goat.Asian J. Med. Biol. Res. June 2017, 3(2): 254-266

Three Familial Cases of Hearing Loss Associated with Enlargement of the Vestibular Aqueduct

1997 ◽  
Vol 106 (12) ◽  
pp. 1063-1069 ◽  
Author(s):  
Satoko Abe ◽  
Shin-ichi Usami ◽  
Hideichi Shinkawa
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
High Frequency ◽  
Present Report ◽  
Sensorineural Hearing ◽  
Familial Cases ◽  
Vestibular Aqueduct ◽  
Different Types ◽  
The Common

The present report describes three familial cases of recessive hearing loss associated with enlargement of the vestibular aqueduct (EVA). Six siblings from three families showed EVA. The common characteristic of these patients was the presence of congenital, high-frequency, fluctuating sensorineural hearing loss. These cases suggest that EVA may be a useful discriminator between different types of recessive hearing loss.

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