Controle de qualidade em equipamentos mamográficos

Nowadays the mammography is the most effective way of revealing early breast cancer. The image in this kind of exam is gotten trough a x-ray sheaf of low energy, however, the suitable visualization of the interesting structures by the radiologist is not always possible due several factors that appears since the mamma composition until the equipments limitation. The regulation 453/98 sets quality control tests and limits of acceptation that guarantee a good development of the mammographys. The purpose of this study is the 3D principle ( Diagnostic, Dose and Dollar), that means, an improved diagnosis, a dose reduction in the patient and a cost decrease for the Institution. In this study was made the quality control tests set by the Regulation in two mammography equipments from Hospital das Clínicas da Faculdade de Medicina de Botucatu (HCFMB - UNESP). The results reached in this research were used in the renovation process of quality stamp in mammography granted by Colégio Brasileiro de Radiologia (CBR) to the diagnosis by image from the HCFMB – UNESP

Expressão da ciclooxigenase – 2 (COX-2) em carcinomas mamários espontâneos em cadelas

The immunohistochemistry regarding the expression of cyclooxygenase-2 (COX-2) for the woman’s breast cancer became a routine application due to the biological relevance. It is possible that COX-2 is closely related to tumor angiogenesis, inhibition of apoptosis mechanism, adhesion and metastasis. Herewith the COX-2 expression contributes to verify the malignant potential of the breast cancer. However it is slightly used in female dog’s spontaneous breast carcinomas. Keeping this in mind, the \cox-2 inhibitions appear as a promising perspective for the prevention and treatment of some sorts of cancer. The present dissertation had as main purpose to show the occurrence of the COX-2 expression in some of the female dog’s spontaneous breast carcinomas

Ultrasonografia Doppler na reprodução de pequenos animais

The Doppler ultrasound allows the assessment of blood flow and the differentiate vessels according to each spectral pattern, location and organ that irrigate, helping the examinations and disease diagnosis. The main methods used are Pulsed Doppler, Color Doppler and Power Doppler. In Brazil veterinary medicine, it shows progress since 1990, but its use is limited by the equipment high cost, the need for operator experience and patient cooperation. There are studies in obstetrics and reproduction of dogs and cats, such as evaluation of the testicular vasculature, including the use of contrast material, and attempts to evaluate prostate in healthy dogs or pathological conditions (cancer and testicular torsion , orchitis and benign prostatic hyperplasia; estrous cycle monitoring, evaluation of irrigation in follicles and corpus luteum, uterus and breasts (mammary tumors) in bitches; monitoring pregnancy from the assessment of maternal, fetal and placental hemodynamics, both in dogs as in cats, and aspirations for early detection of pregnancy in dogs. However, new studies are still required, given the lack of these species, especially cats

Colangiohepatite Felina

Cholangiohepatitis is a common hepatic disorder in cats that is second only to hepatic lipidosis in frequency. The cholangitis-cholangiohepatitis complex is known as the diseases that involve the biliar tract inflammation and may extend to the liver. The classification of the cholangiohepatitis is still controversial, in this present study the following classification was used: Acute Cholangiohepatitis, Chronic Cholangiohepatitis, Lymphocitic Cholangitis. The cholangiohepatitis may be associated with pancreatitis and inflammatory bowel disease, this association is known as feline triaditis. The diagnosis is based on the clinical signs, alterations in laboratory exams and ultrasonography alterations, but the definitive diagnosis is only possible through liver biopsy. The treatment for each type of cholangiohepatitis differs, hence the importance of the right diagnosis. This study aimed to do a review over the ethiology, clinical presentation, diagnosis and treatment for this disease

Comparação entre metodologias de controle de qualidade em mamografia digital

The best way to detect breast cancer is by screening mammography. The mammography equipments are dedicated and require a rigorous quality control in order to have a good quality image and to early detect this disease. The digital equipment is relatively new in the market and there isn’t a national rule for quality control for several types of digital detectors. This study has proposed to compare two different tests manuals for quality control provided by the manufacturers of digital mammography equipments, and also compare them to the “European guidelines for quality assurance in breast cancer screening and diagnosis “(2006). The studied equipments were: Senographe 2000D from General Electric (GE) and the Hologic Selenia Lorad. Both were digital mammography equipments, the GE unit presents an indirect digital system and the other presents a direct digital system. Physical parameters of the image have been studied, such as spatial resolution, contrast resolution, noise, signal-tonoise ratio, contrast-to-noise ratio and modulation transfer function. After that, a study of the importance of quality control and the requirement to implement a Quality Assurance Program has been done. One data collection was done to compare those manual, it was done by checking which tests are indicated and the minimum frequency which they should be conducted in accordance with each manufacturer. The tests were performed by different methodologies and the results were compared. The examined tests were: the breast entrance skin dose, mean glandular dose, contrast-to-noise ratio, signal-to-noise ratio, automatic exposure control and automatic control of density, modulation transfer function, equipment resolution, homogeneity and ghost

Osteossarcoma apendicular: revisão de literatura

Osteosarcoma is the most common primary bone cancer in dogs. It affects most commonly dogs of big or giant breeds with 7 to 8 years and the etiology is unknown. Osteosarcoma is defined as a bone matrix-producing malignant mesenchymal tumor and has a predilection for the metaphyseal region of appendicular skeleton, however, it can affect axial skeleton and soft tissues. Distal radius is the most commonly affected site. The definitive diagnosis of osteosarcoma can be obtained with history, physical examination, radiographs and biopsy. Lung is the most common organ for metastatic disease. The mainly treatment for osteosarcoma is limb amputation and systemic chemotherapy for metastatic disease control. Limb-sparing surgery is a viable alternative to amputation for dogs with concomitant conditions that impede limb amputation. Palliative treatments for osteosarcoma have been studied such as local and systemic radiotherapy, immunotherapy and biphosphonates. This study has the objective of presenting the aspects of diagnosis and treatment for appendicular osteosarcoma

Platinosomíase em felinos domésticos: um diferencial para obstrução biliar

The platinosomiase is a disease the hepatobiliary system of domestic felines being caused by trematode Platynosomum fastosum. The life cycle of the parasite includes the presence of three intermediate hosts (snails, terrestrial isopodes, lizards or frogs). The cat is considered definitive host of the parasite and acquires the infection eating a vertebrate intermediate host containing metacercariae. The adult parasites generally inhabit the liver, gallbladder and bile ducts of cats. The severity of clinical manifestations depends mainly on the number of flukes in the biliary tract. Many animals are asymptomatic or exhibit nonspecific clinical manifestations such as anorexia, lethargy, weight loss, vomiting and diarrhea. In large infestations can occur biliary obstruction resulting in jaundice, cirrhosis, hepatitis cholangiohepatitis and even death. The definitive diagnosis is accomplished through by the detection of fluke eggs in feces or through laparotomy and liver biopsy. Treatment should be based on the use of anthelmintic for the elimination of the parasite and supportive therapy for the animal. Prevention is difficult due to predatory nature of the cat. The control can be accomplished through periodic fecal examinations

Radioterapia em câncer de mama: importância da determinação da curva de isodose

The study analyzed contours of the thoracic region of patients undergoing radiotherapy of breast tumors in Hospital Manuel de Abreu of Bauru (institution 1) and the Hospital da Faculdade de Medicina of Botucatu (Institution 2). Were prepared isodose curves corresponding to the contours of the patient, which were presented for radiotherapists doctors both hospital services that enabled the choice of the curve isodose that provides the best distribution of radiation dose in the irradiated volume. Some boundaries were digitized in one institution and sent for preparation of isodose lines in the institution 2, both curves plotted in each of the institutions and for the same contour, were compared, showing that the methodology of Curves of distance is feasible and reliable, while optimizing the routine procedures regarding the handling of isodose plans provided by different radiation equipment. It compares the calculation of the exposure time determined using the isodose curve selected by calculating the value obtained considering the PDP at the point of the middle line of separation between the internal and external fields, the difference between the two methods for determining exposure time was around 2.4%. A study on the angle of the radiation beam at the input field (region breast-air) was conducted showing that, once known a tangent angle of the input beam, one can estimate the angle of the wedge filter used in some procedures for uniformity of dose within the irradiated volume compensation and the lack of tissue in the treatment volume. A comparative study between the isodose curves produced manually with the curves obtained in a two-dimensional computer system, the computer system showed that provides further information regarding the dose gradient within the irradiated volume, in addition to reducing the time spent in preparing the curves isodose

Avaliação de concentração de citocinas no soro de pacientes portadoras de lesão intraepitelial escamosa de baixo grau, lesão intraepitelial escamosa de alto grau e carcinoma cervical invasor

A infecção genital por Papilomavírus Humano (HPV) é uma das doenças sexualmente transmissíveis (DST), de origem viral, mais prevalente no mundo. As lesões intraepiteliais escamosas de baixo grau (LIEBG) e de alto grau (LIEAG), assim como carcinoma cervical invasor (CCI), estão associadas à presença do HPV. A resposta imune tem papel importante na infecção pelo HPV na cérvice uterina, sendo as citocinas importantes reguladoras da transcrição viral. Avaliar a concentração de IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IFN-γ e TNF-α no soro de mulheres portadoras de LIEBG, LIEAG e CCI. Foram incluídas no estudo 40 mulheres com diagnóstico histopatológico de LIEBG (n=11), LIEAG (n=10), CCI (n=10) e 9 mulheres com suspeita de doença HPV induzida, mas sem alterações histopatológicas na biópsia do colo do útero (controle), atendidas no Ambulatório de Colposcopia da Faculdade de Medicina de Botucatu (UNESP) e no Ambulatório de Ginecologia Preventiva do Hospital Amaral Carvalho, Jaú, SP. O sangue periférico foi colhido por punção venosa e o soro armazenado até o processamento. A dosagem das citocinas no soro foi avaliada por ensaio imunoenzimático (ELISA). A pesquisa de HPV foi realizada empregando-se a técnica da reação em cadeia da polimerase (PCR). Os dados sócio-demográficos foram obtidos por entrevista no momento da consulta ginecológica. A mediana de idade das pacientes do grupo controle, LIEBG, LIEAG, e CCI foi de 38 (21-69), 32,5 (17-51), 39 (23-65) e 51,5 (29-72), respectivamente. Houve diferença estatisticamente significante de mediana de idade das pacientes do grupo CCI quando esta foi comparada com os demais grupos. Em relação às características das pacientes, 76% eram brancas, 68% relataram união estável, 31% concluíram o 2º grau, 42% eram fumantes, 37% das mulheres relataram 3 ou mais parceiros sexuais durante... (Resumo completo, clicar acesso eletrônico abaixo)

Percepção de mulheres sobre consulta de enfermagem, exame de papanicolaou e vulvovaginite

The nursing consult (a job exclusive to a nurse), is a great instrument to gynecology, seeing as nurses are of fundamental importance in the prevention of uterine cancer, mostly by the use of the Papanicolau test, the most efficient method in the early detection and prevention of this kind of cancer. In addition to that, this consult includes a breast exam and possibly a vulvovaginitis exam, so that necessary forwardings and exam applications can be done. That being said, the work, in a qualitative analysis has been done in the “Healthcare center and school” in the city of Botucatu – SP, intending to measure the perception of the women in the population, of the Papanicoulau Test, the nursing consults, and their knowledge about vulvovaginitis. Twenty women were interviewed (using semi-structured interviews), and given forms after the nursing consult. The interviews were analysed using Bardin’s content analysis technique. The results show that the women’ reactions to the procedures were positive. Even Though there’s a culture of submission to medicine, and the Papanicolau test is seen by them as a necessary and important (even if unconfortable) procedure in the early prevention and detection of uterine cancer and other diseases, there was little to no knowledge about the signs, symptoms, and transmission methods for those different diseases. It is up to the nurse to facilitate these women’ access to that information, regarding not only the prevention of diseases, but also, and especially, the nursing consult’s relevance on theuterine cancer prevention program

Análise quantitativa dos parâmetros físicos e radiométricos de procedimetnos radioterapicos em tumores de mama

The paper presents the radiometric parameters determined by the medical physicist during routine radiotherapy planning service in cases of breast cancer . The contours of the breast volume in patients undergoing radiation breast tumors at the Hospital das Clinicas, Faculty of Medicine , UNESP, Botucatu ( HCFMB ) during the year 2012 were analyzed . In order to analyze the influence of physical and radiometric parameters for the determination of the dose distribution of irradiated breast volume , four measurements of isodose curves were prepared in four different heights breast , and compared with the isodose curves plotted computationally . In the routine of planning , the medical physicist must determine the isodose curve that gives the best dose distribution homogeneity in the irradiated volume . The choice of the treatment plan can be done by dedicated computer systems , which require significantly costly investments available services having better financial support . In the Service of Medical Physics , Department of Radiotherapy , HC FMB , we use a two-dimensional software for determination of isodose curves , however , this software is out of date and frequently becomes inoperable due to the lack of maintenance and it is a closed system without feasibility of interference from computer professionals . This fact requires manual preparation of isodose curves , which are subject to uncertainties due to the subjectivity in the clinical interpretation of medical radiation oncologist and medical physicist responsible for planning , plus dispendiar significant calculation time . The choice of the optimal isodose curve depends on the energy of the radiation beam , the geometry and dimensions of the irradiated area . The contours of the breast studied in this work evaluations showed that , for a given energy input , such as the energy of 1.25 MeV of gamma radiation Unit Telecobaltoterapia , the determination of the percentage depth dose ( PDP ) ...

Acupuntura veterinária em pequenos animais

Acupuncture is one of the oldest forms of treatment, which is based in the grounds of Traditional Chinese Medicine. Despite the ancient history, it’s not completely widespread in Brazil, neither so comprehensive in veterinary medicine as used in humans. The technique of inserting needles into acupuncture points, can also be stimulated by heat, electrical stimulation or implants of metal, is mainly focused on neuromuscular disorders in small animals. The difficulty of comprehension of language and the lack of cientific bases restricted the possible applications of acupuncture. This work will address some of the clinical situations this complementary treatment can act, such as neurological, cardiorespiratory, reproductive, gastrointestinal, immunological, and postoperative intensive care

Avaliação das impedâncias em pontos de acupuntura

An experimental study in dogs was accomplished to evaluate impedances at the acupuncture points and the relative false points. According to the physics concepts and the Ohm’ Law, an electrical circuit was set up to determine the impedance. This circuit was introduced into three experiments in anesthetized dogs with needles at selected points. In the first two experiments, was applied an alternating tension with 200Hz frequency in the circuit and, in the last experiment, the frequency was increased to 10kHz, the tensions and electrical currents were measured between every pair of points for the all experiments. The impedances were calculated with the values obtained by experiments. The analysis of impedance values indicated that there is a coherent relation between the results and the applied frequencies in circuit, so just at high frequency condition admits the correct measurement of total impedance, therefore the last experiment gave the result which agreed with the theory, that the impedances at acupuncture points are lower than the impedances at false points

Pênfigo Foliáceo em cães

Pemphigus complex in animals is considered rare, but not so when compared with the occurrence of other autoimmune diseases. Pemphigus Foliaceus in dogs is the most common varieties of pemphigus and is characterized clinically by intraepidermal pustules, starting on the face and ears, pads, groin, and may become multifocal or generalized in six months. As the pustules are very fragile, the lesions usually found are secondary, which may range from dry to collarettes epidermal crusting, and nasal depigmentation. The diagnosis is difficult because presents sintomatology similar to other diseases and laboratory diagnosis more precise through the histopathological examination of pustules integrate (biopsy), which are rarely found. The treatment, although of the individual treatment regimen, is based on treating opportunistic diseases and immunosuppressing the animal in order to decrease the production of autoantibodies. The drugs of choice depend on the clinical presentation, however is usually oral prednisone and azathioprine in the dog and combined immunosuppressive therapy. Should make use daily until the disease is inactive and gradually decrease the dose until have the minimum effective dose, preferably on alternate days for the remission of the disease. Prognosis of pemphigus varies according to disease stage and treatment established. Pemphigus foliaceus is less serious nonetheless might be fatal without treatment

Avaliação das atividades citotóxicas e imunomoduladora de paládio(II) contendo o ligante DMBA= N,N-dimetilbenzilamina

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)