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1.
Pneumologie ; 73(10): 586-591, 2019 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-31622997

RESUMO

Infectious Diseases are a cross-sectional area connected to various medical disciplines and offer interested physicians multiple working opportunities. The spectrum of infectious diseases covers both out- and inpatient care as well as basic, clinical and epidemiological research. The need for infectious diseases specialists is increasing, thus career prospects are promising. Working conditions in infectious diseases are comparatively family-friendly. With this article we intend to arouse interest for working in the fascinating fields of infectious diseases and provide information on career opportunities. Data from a recently conducted survey among members of the German Society of Infectious Diseases deliver insight, how infectious disease specialists work today.


Assuntos
Escolha da Profissão , Infectologia/educação , Infectologia/organização & administração , Médicos , Estudos Transversais , Alemanha , Humanos , Médicos/organização & administração , Médicos/estatística & dados numéricos , Sociedades Médicas , Inquéritos e Questionários
2.
Rofo ; 173(12): 1079-85, 2001 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-11740667

RESUMO

PURPOSE: It was the aim of the following study to determine the feasibility of the recanalization of long occlusions in iliac arteries and to establish its patency rate. MATERIAL AND METHODS: We retrospectively evaluated the data of 23 patients (15 male and 8 female) with occlusions of the iliac arteries with a mean length of 12 cm (range: 9-15 cm). The occlusions were situated either in the common iliac artery (CIA) (n = 3), in the external iliac artery (EIA) (n = 12) or in both CIA and EIA (n = 7). In one patient three vessels, the common femoral artery included, were involved. The recanalization procedure was performed with wire and catheter from retrograde and, in case of a failure, from antegrade in a cross-over technique. RESULTS: Recanalization succeeded in all patients. Technical success defined as residual stenosis < 30 % was seen in 20 of 23 patients. Early reocclusions were seen in four patients, in three of whom, the stent dilatation had been incomplete. Late reocclusions were observed in three patients, one of whom had already had early reocclusion. The reason was stent breakage in one, stent dehiscence in the second and restenosis in the third patient. All of the patients with reocclusion either early or late, had received covered stents. In four patients restenosis developed within 30 months: It was successfully treated by ballon dilatation or stent. Embolism during the recanalization procedure was observed in six patients. Embolism was observed on the ipsilateral side in five, and on the contralateral side in one patient. In each patient who had experienced embolism, balloon dilatation had been performed before stent implantation. CONCLUSION: 1) There is some evidence that the recanalization of long iliac artery occlusions is feasible. 2) The main reason for early and late reocclusions is either rest stenosis or restenosis. 3) Covered stents should only be used in selected cases. 4) Primary stenting is the treatment of choice in order to prevent embolism.


Assuntos
Angioplastia com Balão , Arteriopatias Oclusivas/terapia , Artéria Ilíaca , Stents , Adulto , Idoso , Idoso de 80 Anos ou mais , Angiografia , Arteriopatias Oclusivas/diagnóstico por imagem , Embolia/diagnóstico por imagem , Embolia/etiologia , Estudos de Viabilidade , Feminino , Humanos , Artéria Ilíaca/diagnóstico por imagem , Isquemia/diagnóstico por imagem , Isquemia/terapia , Masculino , Pessoa de Meia-Idade , Recidiva , Retratamento , Fatores de Risco
3.
J Orofac Orthop ; 59(1): 39-46, 1998.
Artigo em Inglês, Alemão | MEDLINE | ID: mdl-9505054

RESUMO

In order to examine the diagnostic significance of typical clinical symptoms in temporomandibular joint (TMJ) disorders for diagnosis of anterior disk displacement, clinical findings were compared with the degree of disk displacement in 84 TMJs of 59 patients with TMJ disorders, who were examined clinically and by means of magnetic resonance imaging (MRI). The control group consisted of 31 subjects with no TMJ symptoms. No significant correlation between the degree of anterior disk displacement and palpation pain of the masticatory muscles or clicking/crepitus of the TMJ could be found. Joint clicking was observed in 65% of patients with TMJ symptoms in normal disk position (NDP). The percentage of joint clicking was almost the same in patients with anterior disk displacement with reposition (ADWR) (68%). There were significant correlations between active mouth opening and disk position as well as between a history of pain and disk position. Patients with NDP and ADWR had almost identical mouth opening values: 48 (+/- 5) mm and 46 (+/- 5) mm respectively. In contrast to these groups the mean values decreased significantly to 42 (+/- 6) mm in patients with anterior disk displacement without reposition (ADWOR). There were no significant correlations between occlusal findings (centric relation and habitual relation, early occlusal contacts, abrasion facets) and disk position when viewed either collectively or individually.


Assuntos
Luxações Articulares/diagnóstico , Disco da Articulação Temporomandibular/lesões , Adulto , Distribuição de Qui-Quadrado , Feminino , Humanos , Imagem por Ressonância Magnética/instrumentação , Imagem por Ressonância Magnética/métodos , Imagem por Ressonância Magnética/estatística & dados numéricos , Masculino , Distribuição Aleatória , Estatísticas não Paramétricas , Disco da Articulação Temporomandibular/patologia
4.
Rofo ; 166(2): 108-14, 1997 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-9116251

RESUMO

PURPOSE: It has been the aim of the study to assess parenchymal changes in the lung with high-resolution CT in healthy heavy, moderate, and non-smokers. MATERIAL AND METHODS: We prospectively evaluated CT changes in 42 healthy heavy smokers (gr. (group) 2, > or = 30 pack-years), 40 moderate smokers (gr. 1, < 30 pack-years) and 38 non-smokers (gr. 0). For CT-analysis, we used a visual grading and computer-based analysis system (Mipron, Kontron GmbH, Munich, Germany). RESULTS: Productive cough, dyspnoea and chronic bronchitis were more common in smokers than in non-smokers (p < 0.05). Pathological CT-findings were found in 6/38 non-smokers and in 71/82 smokers (p < 0.01). In particular, in smokers (gr. 1 [%], gr. 2 [%]) the following pathological findings were found: dystelectases in dependent lung areas in 50% (62, 38), centrilobular emphysema in 44% (43, 20), pleural thickening in 38% (38, 38), panlobular emphysema in 36% (52, 20), ground-glass pattern in 33% (36, 30), paraseptal emphysema in 21% (31, 10), prominent or thickened interlobular septa in 18% (29, 8) and centrilobular micronodules in 13% (10, 18). Computer-based analysis demonstrated thicker bronchial walls in smokers as compared to non-smokers. CONCLUSION: Although feeling healthy, smokers demonstrate various parenchymal abnormalities in the lung. In smokers, subpleural dystelectases, centrilobular and panlobular emphysema are dependent on cigarette consumption, ground glass pattern, centrilobular micronodules, pleural thickening and bronchial wall thickening are independent on cigarette consumption.


Assuntos
Pulmão/diagnóstico por imagem , Fumar/efeitos adversos , Tomografia Computadorizada por Raios X/métodos , Adulto , Bronquite/diagnóstico por imagem , Bronquite/etiologia , Doença Crônica , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Enfisema Pulmonar/diagnóstico por imagem , Enfisema Pulmonar/etiologia , Estatísticas não Paramétricas , Tomografia Computadorizada por Raios X/instrumentação , Tomografia Computadorizada por Raios X/estatística & dados numéricos
5.
Radiologe ; 37(2): 152-8, 1997 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-9173429

RESUMO

In order to evaluate magnetic resonance imaging (MRI) changes in correlation with different degrees of internal derangement of the temporomandibular joint, we evaluated 117 joints of 59 symptomatic patients and 31 volunteers. Data analysis included morphologic and morphometric characteristics. Sixteen joints (19%) were considered normal, 40 demonstrated anterior displacement with reduction (47%) and 27 anterior displacement without reduction (32%). In three of the volunteers anterior displacement with reduction was noted. Advancing anterior position of the disk was associated with reduced ability to open the mouth, progressive deformity and shortening of the disk, thinning of the bilaminar zone, regressive and proliferative bony changes of the condyle, reduced translatory movement of the disk and condyle, thinning of joint space, cranial and dorsal displacement of the condyle and flattening of the slope of the tuberculum. In addition to alterations in condylar and disk morphology, MRI can demonstrate various additional measurable changes that correlate well with the degree of anterior disk displacement.


Assuntos
Imagem por Ressonância Magnética/métodos , Disco da Articulação Temporomandibular/patologia , Síndrome da Disfunção da Articulação Temporomandibular/diagnóstico , Articulação Temporomandibular/patologia , Adulto , Cefalometria , Feminino , Humanos , Masculino , Mastigação/fisiologia , Síndrome da Disfunção da Articulação Temporomandibular/classificação , Síndrome da Disfunção da Articulação Temporomandibular/cirurgia
6.
Radiology ; 201(3): 864-7, 1996 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-8939243

RESUMO

To evaluate percutaneous transluminal angioplasty (PTA) with a cutting balloon performed in stenosed hemodialysis fistulas and grafts, 19 venous lesions in 15 patients were treated with a cutting balloon with an inflated diameter of 3-6 mm. The grade of stenosis ranged from 40% to 90% (mean, 65% +/- 15 [standard deviation]). Cutting PTA was performed before conventional PTA in seven patients and was followed with conventional PTA with larger balloons in seven patients. The balloon expanded completely in all patients, and no balloon waist remained. The mean grade of stenosis decreased to 14% +/- 9. Cutting PTA increased the technical success of balloon dilation of hemodialysis fistulas and grafts.


Assuntos
Angioplastia Coronária com Balão/instrumentação , Cateteres de Demora , Diálise Renal , Doenças Vasculares/terapia , Idoso , Idoso de 80 Anos ou mais , Constrição Patológica/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Veias
7.
Rofo ; 165(5): 438-44, 1996 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-8998314

RESUMO

PURPOSE: It has been the aim of the following study to evaluate pulmonary changes in rheumatoid arthritis with high-resolution CT and to assess their correlation with joint manifestation and laboratory parameters. MATERIAL AND METHODS: The authors prospectively performed computed tomography (CT) in 83 patients with rheumatoid arthritis and graded pulmonary changes for frequency and severity. Included were patients with 6-7/7 ARA, BSR > 25/1 min and mean disease duration of 12 years (range, 1-44). Data of medical and drug histories, smoking habits, blood levels of rheumatoid factor (RF), antinuclear antibodies (ANA) and C-reactive protein as well as the degree of joint involvement were taken into account. RESULTS: 58 patients (70%) had pathological CT scans showing the following abnormalities: interlobular thickening (44.5%), intralobular thickening (34%), nonseptal linear attenuation (35%), nodular or linear pleural thickening (32.5%), ground-glass pattern (19%), centrilobular nodules (13%), honeycombing (13%) and bronchiolectasis (9%). Intralobular thickening, honeycombing and pleural thickening were associated with a higher degree of joint manifestation; pleural thickening, honeycombing and ground-glass pattern were associated with a higher level of rheumatoid factor. There was no relationship between pulmonary changes and either the duration of the disease, antinuclear antibodies (ANA) or C-reactive protein. CONCLUSION: CT may be a useful noninvasive tool for recognition of RA-associated lung disease. Interstitial lung changes are frequent and they are independent of the duration of the disease. Pulmonary interstitial changes are more frequent and more severe in RF-positive patients and in case of more severe joint involvement.


Assuntos
Artrite Reumatoide/diagnóstico por imagem , Artrografia , Pneumopatias/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Adulto , Idoso , Artrite Reumatoide/sangue , Artrite Reumatoide/complicações , Artrite Reumatoide/patologia , Feminino , Humanos , Pulmão/diagnóstico por imagem , Pulmão/patologia , Pneumopatias/sangue , Pneumopatias/etiologia , Pneumopatias/patologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estatísticas não Paramétricas , Tomografia Computadorizada por Raios X/estatística & dados numéricos
8.
Rofo ; 165(3): 264-9, 1996 Sep.
Artigo em Alemão | MEDLINE | ID: mdl-8924687

RESUMO

PURPOSE: To evaluate the value of magnetic resonance imaging (MRI) in symptomatic patients with different degrees of internal derangement. MATERIAL AND METHODS: We prospectively investigated 117 temporomandibular joints (TMJ) of 59 symptomatic patients and 31 asymptomatic volunteers and correlated this with clinical parameters. RESULTS: There was a positive correlation between the degree of internal derangement and deformity of the disc, maximal mouth opening, signal intensity of the posterior band, thickness of the bilaminar zone, proliferative bony changes, size of the condyle and reduced translation movement of the condyle, which in addition moved upward and backward. Patients most often complained of pain which was dependent on the degree of disc displacement and condylar changes. Clinical parameters were found to be inaccurate in predicting disc displacement. CONCLUSION: Patients with internal derangement of the temporomandibular joint may be asymptomatic. Patients history may give the only pointer to the disorder.


Assuntos
Imagem por Ressonância Magnética/métodos , Disco da Articulação Temporomandibular/patologia , Transtornos da Articulação Temporomandibular/diagnóstico , Adulto , Feminino , Humanos , Masculino , Exame Físico , Estudos Prospectivos
9.
J Magn Reson Imaging ; 6(5): 769-74, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8890015

RESUMO

To determine the value of MRI in temporomandibular joint (TMJ) disorders, the data of MRI-proven anterior disc dislocation without reduction (ADWOR) were correlated with clinical history and clinical data. MRI demonstrated degenerative bony changes and a reduced sagittal diameter of the condyle, a variable degree of disc deformation, and a thinned bilaminar zone in each of the joints with ADWOR, which clearly differed from patients with anterior disc dislocation with reduction (ADWR) (P = .01) and normal disc position (NDP) (P < .001). Of 59 patients and 83 TMJs that had been investigated in a 2-year period, as shown by MRI, 22 patients (27 TMJs) had ADWOR (32%), 16 joints had NDP (19%), and 40 patients had ADWR (49%). In patients with ADWOR, the clinical history revealed pain in either of the joints and/or cervical or masticatory muscles in 25 (93%) joints. Clinical investigation revealed various abnormalities in 22 joints; five of those presented without any pathologic clinical finding. Mouth opening was unlimited in nine patients (47%), palpation of the muscles of mastication was painless in 13 patients (52%), and joint noises during mouth opening or closing were noted in 14 patients (56%). According to clinical histories, four patients were suspected to have become symptomatic only after dental treatment. ADWOR is difficult to diagnose with clinical methods alone. The indication for MRI evaluation of the TMJ should be extended for asymptomatic patients with a history of limitation in mouth opening and pathologic x-ray morphology of the condyle. Because symptoms may arise after dental treatment in these patients, aggravation of internal derangement may be avoided by careful handling.


Assuntos
Luxações Articulares/diagnóstico , Imagem por Ressonância Magnética , Disco da Articulação Temporomandibular , Adulto , Feminino , Humanos , Luxações Articulares/complicações , Luxações Articulares/fisiopatologia , Pessoa de Meia-Idade , Transtornos da Articulação Temporomandibular/diagnóstico , Transtornos da Articulação Temporomandibular/fisiopatologia
10.
Nephrol Dial Transplant ; 11(6): 1058-64, 1996 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-8671969

RESUMO

PURPOSE: To describe efficacy of hydrodynamic thrombectomy for occluded dialysis native and graft fistulae in 51 instances. MATERIALS AND METHODS: Fifty-one hydrodynamic thrombectomies of 34 native and graft a-v fistulae were performed. There were 32 thrombectomies in PTFE grafts and 19 procedures in native Brescia-Cimino fistulae. Multiple thrombectomies were performed in 11 of 34 fistulae. The estimated occlusion time was 36.4+/-22 h. The length of the occluded segment ranged from 2 to 50 cm (mean 28.8 cm). In all cases, a 7 F hydrodynamic thrombectomy catheter was used. Double-cannulation technique was used for graft fistulae, single-cannulation for native fistulae. Additionally, balloon dilatation was performed in all 51 cases, stenting in six, and aspiration thrombectomy in two cases. RESULTS: Arterialized flow was re-established by hydrodynamic thrombectomy and PTA in 43 of 51 cases (84%). By additional use of other techniques, technical success improved to 46 of 51 procedures (90%). Early re-thrombosis occurred in six cases within 24 h of thrombectomy (11%). Clinical success was achieved in 39 of 46 technically successful cases (85%). Cumulative patency was calculated at 63% after 1 week, 57% after 1 month, 48% after 3 months, 37% after 6 months, and 32% after 12 months. Patency of native fistulae after thrombectomy was better than patency of grafts. CONCLUSIONS: Hydrodynamic thrombectomy is an effective percutaneous technique for declotting haemodialysis fistulae and grafts recently thrombosed.


Assuntos
Derivação Arteriovenosa Cirúrgica , Prótese Vascular , Diálise Renal , Trombectomia/métodos , Adulto , Idoso , Angioplastia com Balão/efeitos adversos , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Politetrafluoretileno , Trombectomia/efeitos adversos , Resultado do Tratamento
11.
Fortschr Kieferorthop ; 56(6): 318-26, 1995 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-8655104

RESUMO

In our study of 107 patients, for whom data derived from clinical functional analysis, axiography and, in part magnet resonance imaging, were present, we were able to show that in routine orthodontic diagnosis the use of panoramic X-ray in the normal course of a general examination of the mandibular joint can also provide important indications of the presence of cranio-mandibular disorders. The panoramic X-ray revealed that in patients with Angle class II and front deep and open bite there were significantly mor changes in the form of the condyles. A definite morphologic finding of a retracted fovea pterygoidea was found frequently in patients with anterior disk replacement with or without reduction. Lastly, the panoramic X-ray showed that a change in form of the condyles, with in some cases a serious arthrosis, occurs significantly most frequent in patients with anterior displacement without reduction.


Assuntos
Ortodontia Corretiva , Radiografia Panorâmica , Transtornos da Articulação Temporomandibular/diagnóstico por imagem , Adolescente , Adulto , Feminino , Humanos , Imagem por Ressonância Magnética , Masculino , Má Oclusão/diagnóstico por imagem , Má Oclusão/patologia , Côndilo Mandibular/diagnóstico por imagem , Côndilo Mandibular/patologia , Pessoa de Meia-Idade , Articulação Temporomandibular/diagnóstico por imagem , Articulação Temporomandibular/patologia , Transtornos da Articulação Temporomandibular/patologia
14.
Rofo ; 161(1): 12-8, 1994 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-8043758

RESUMO

To determine pulmonary features of collagenous vascular diseases as assessed by high resolution computed tomography (HRCT) we performed a prospective study of 73 consecutive patients, 44 with rheumatoid arthritis (ra), 11 with progressive systemic sclerosis (pss), 8 with systemic lupus erythematosus (sle), 5 with sjögren's syndrome, 3 with dermato-/polymyositis and 2 with mixed connective-tissue disease. Pathological lung changes were demonstrated in 70% of patients with ra, 91% with pss, 63% with sle and 60% with the rest. HRCT features included: intralobular thickening (48%) with a predominance in posterior lower and middle lung areas, pleural thickening (48%) with a predominance in upper lung areas, prominent interlobular septa (37%), subpleural lines (33%), parenchymal bands (33%) with a predominance in lower and anterior lung areas, honeycombing (33%), ground glass pattern (29%) with a predominance in upper and middle, micronodules (18%) with a predominance in upper lung areas and bronchiectasis (14%). HRCT is an important means for the assessment of lung changes associated with collagenous vascular diseases and a definite diagnosis is possible in most cases.


Assuntos
Doenças do Colágeno/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Adulto , Idoso , Doenças do Colágeno/epidemiologia , Diagnóstico Diferencial , Feminino , Humanos , Doenças Pulmonares Intersticiais/diagnóstico por imagem , Doenças Pulmonares Intersticiais/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Distribuição por Sexo , Tomografia Computadorizada por Raios X/instrumentação , Tomografia Computadorizada por Raios X/estatística & dados numéricos
15.
Klin Padiatr ; 206(3): 178-80, 1994.
Artigo em Alemão | MEDLINE | ID: mdl-8051912

RESUMO

A prospective study of detecting vesicoureteric reflux (VUR) by ultrasound is to be presented. In case of reflux, gas bubbles can be seen in the renal pelvis during the filling phase of a gas cystogram and during micturition, utilizing ultrasound as the imaging modality. In children under two years 52 sonographic reflux studies were performed and compared with radiographic voiding cystourethrograms (VCUG). All higher grade VUR (grades II-IV) have been detected by our method.


Assuntos
Refluxo Vesicoureteral/diagnóstico por imagem , Feminino , Humanos , Lactente , Rim/diagnóstico por imagem , Masculino , Estudos Prospectivos , Ultrassonografia , Infecções Urinárias/diagnóstico por imagem , Urodinâmica/fisiologia
16.
J Magn Reson Imaging ; 4(3): 389-95, 1994.
Artigo em Inglês | MEDLINE | ID: mdl-8061438

RESUMO

To evaluate the use of gadopentetate dimeglumine in magnetic resonance (MR) imaging of scrotal disorders, the clinical, ultrasound, and MR imaging data of 29 patients (age range, 19-75 years) with various intra- and extratesticular disorders were retrospectively analyzed. T1- and T2-weighted spin-echo images (T1-T2 group) were compared with T1-weighted spin-echo images before and after intravenous administration of gadopentetate dimeglumine (T1-Gd group). A receiver operating characteristic (ROC) analysis of the findings was undertaken. Better contrast between tumor and parenchyma and a clearer demonstration of the tunica albuginea were noted in the T1-T2 group (although not of diagnostic relevance). ROC analysis revealed no differences between the two imaging groups in the diagnosis of tumor, trauma, hydrocele, or hemorrhage; however, epididymitis was diagnosed more easily with contrast enhancement (0.8834 vs 0.7759, P = .04) and the diagnosis of orchitis was expressed more strongly (0.8221 vs 0.7184, P = .17). Four of the five observers were more confident in making the diagnosis with contrast enhancement. With MR imaging, the diagnosis was correctly suggested in three patients in whom clinical and ultrasound data were inconclusive. Gadolinium-enhanced MR imaging gives additional information in scrotal disorders and facilitates diagnosis. It may be helpful when findings at physical examination and ultrasound differ and when plain T1- and T2-weighted images are equivocal.


Assuntos
Meios de Contraste , Imagem por Ressonância Magnética/métodos , Meglumina , Compostos Organometálicos , Ácido Pentético/análogos & derivados , Escroto/patologia , Doenças Testiculares/diagnóstico , Neoplasias Testiculares/diagnóstico , Testículo/patologia , Adulto , Idoso , Combinação de Medicamentos , Gadolínio , Gadolínio DTPA , Humanos , Masculino , Pessoa de Meia-Idade , Curva ROC , Estudos Retrospectivos , Sensibilidade e Especificidade , Doenças Testiculares/epidemiologia , Neoplasias Testiculares/epidemiologia
17.
Fortschr Kieferorthop ; 55(1): 21-7, 1994 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-8157234

RESUMO

Magnet resonance imaging was used to diagnose 24 temporomandibular joints of 18 patients as having anterior disk displacement without reduction. By comparing clinical functional analysis, axiography, and magnet resonance imaging it was demonstrated that a valid diagnosis could be made on the basis of magnet resonance imaging alone. Former joint clicking and limitation and a dental Angle Class II were diagnostic indications of a disk displacement without reduction. Because of often only slight clinical symptoms or their absence, there is always a danger that disk displacement without reduction will go undiagnosed. In relation to orthodontic therapy, such patients are at risk, because pain can arise during treatment.


Assuntos
Registro da Relação Maxilomandibular , Imagem por Ressonância Magnética , Ortodontia , Transtornos da Articulação Temporomandibular/diagnóstico , Adolescente , Adulto , Estudos de Avaliação como Assunto , Feminino , Humanos , Masculino , Má Oclusão de Angle Classe II/diagnóstico , Pessoa de Meia-Idade , Articulação Temporomandibular/patologia , Articulação Temporomandibular/fisiopatologia
18.
Cardiovasc Intervent Radiol ; 16(5): 303-7, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-8269427

RESUMO

Ultrasound energy was applied to 137 segments of human cadaver atherosclerotic arteries, 90 with calcified and 47 with noncalcified atheromatous plaque, and to 100 segments of healthy swine aorta. The average depth of penetration was dependent on the forward force of the ultrasonic probe, the duration of treatment, and the degree of atherosclerosis. There was one perforation of a fibrous plaque using a forward force of 2 Newton and 45 sec of application time. Injury of healthy intima was minimal. It is concluded that catheter-delivered ultrasound is effective and safe for the disintegration of atherosclerotic plaques. Presently, the main limitations of the system are the lack of flexibility and steerability.


Assuntos
Angioplastia com Balão/instrumentação , Arteriosclerose/terapia , Terapia por Ultrassom/instrumentação , Angioplastia com Balão/métodos , Animais , Aorta/ultraestrutura , Doenças da Aorta/patologia , Doenças da Aorta/terapia , Arteriosclerose/patologia , Humanos , Técnicas In Vitro , Microscopia Eletrônica , Microscopia Eletrônica de Varredura , Segurança , Suínos , Terapia por Ultrassom/métodos
19.
Fortschr Kieferorthop ; 54(3): 108-18, 1993 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-8330813

RESUMO

During post-treatment examination the effect of splint therapy on 14 temporomandibular joints (TMJ) with anterior disk displacement were examined using clinical and instrumental findings and magnet resonance imaging (MRI) to judge the therapeutical success of the treatment from an orthodontic perspective. A stable reposition of the TMJ disk was achieved in four joints, which showed no relapse over a two-year period of observation. The success of the therapy was dependent on the extent of the tissue damage to the TMJ and also on patient compliance. The MRI yielded therapeutically valuable information, which is not revealed in the clinical-instrumental analysis, on the tissue structure of the disk and the ligaments. In certain cases the use of MRI is necessary to confirm the clinical diagnosis.


Assuntos
Placas Oclusais , Síndrome da Disfunção da Articulação Temporomandibular/terapia , Adolescente , Adulto , Feminino , Seguimentos , Humanos , Registro da Relação Maxilomandibular , Imagem por Ressonância Magnética , Masculino , Placas Oclusais/estatística & dados numéricos , Prognóstico , Articulação Temporomandibular/patologia , Síndrome da Disfunção da Articulação Temporomandibular/diagnóstico , Síndrome da Disfunção da Articulação Temporomandibular/epidemiologia , Fatores de Tempo
20.
Invest Radiol ; 28(1): 39-45, 1993 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8425851

RESUMO

RATIONALE AND OBJECTIVES: To determine early radiographic changes in diffuse alveolar injury, the authors correlated computed tomography (CT) and histopathology in pigs with recurrent endotoxinemia. METHODS: Five pigs received recurrent endotoxin over a 17-hour period. Three pigs received physiologic saline and served as controls. Hemodynamic and blood-gas data were analyzed. CT was performed immediately before killing the animals. The lungs were cut into 5-mm-thick slices in the same axis as the CT scans and were investigated by light and electron microscopy. RESULTS: Hemodynamic data, blood-gas analysis, and morphologic changes closely simulated the clinical situation of septic shock in the five pigs that had received endotoxin. Results of histologic examination depicted changes similar to those associated with adult respiratory distress syndrome (ARDS). CT clearly demonstrated both interstitial, and to a minor degree, intra-alveolar lesions in the endotoxin-injected group, which correlated well with dilated lymph vessels, thickened interstitium, and areas of dystelectasis on histologic examination. Although there was a rather uniform clinical picture, CT and histologic findings showed different degrees of involvement. CONCLUSIONS: CT clearly depicts changes in endotoxin-injured pig lungs in an early clinical state, which are similar to changes associated with ARDS on histologic examination.


Assuntos
Endotoxinas/efeitos adversos , Escherichia coli , Pulmão/diagnóstico por imagem , Síndrome do Desconforto Respiratório do Adulto/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Animais , Humanos , Pulmão/patologia , Síndrome do Desconforto Respiratório do Adulto/patologia , Choque Séptico/diagnóstico por imagem , Choque Séptico/patologia , Suínos , Fatores de Tempo
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