首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
Delorme S 《Der Radiologe》2001,41(4):371-378
Ultrasonography and magnetic resonance (MR) tomography are helpful tools to evaluate unclear lesions found at screening mammography. Ultrasound is particularly useful to prove the presence of a cyst or to further examine unclear, asymmetrical densities. With MR mammography, carcinomas can be found even when x-ray mammography or ultrasonography are limited due to diffuse, benign, proliferative changes. Ultrasound guidance has greatly facilitated core needle biopsy for suspicious lesions. Additionally, approved devices for MR-guided biopsy are commercially available. As a primary screening tool, ultrasound or MR mammography may be used only in women who are positive for BRCA-1 or BRCA-2 mutations or who are otherwise at high risk for breast cancer.  相似文献   

2.
An account is given in this paper of academic teaching at Germany's earliest institute of forensic medicine. Reference is also made to relevant teaching subjects offered by other university departments. The track record dates back to the first third of the 18th century. Lectures on forensic medicine were available as early as in the syllabus of the Collegium medico-chirurgicum that had been operated in 1724. Classes were continued as of 1810 at the newly established University of Berlin. The first programmes for students of medicine and law were initiated in 1833 at the newly established Practical Teaching Institute for Public Medicine which became a model for similar institutions in Germany and abroad. While years of efforts, with substantive involvement of Berlin-based professionals, resulted in formal recognition of forensic medicine as a compulsory subject of medical education in 1901, its inclusion as a mandatory subject into the statutory graduate examination for medical practitioners was not achieved until 1924. Additional classes were set up for dentists in the academic year of 1953/54 and for detectives in the spring term of 1964.  相似文献   

3.
4.
Ohne ZusammenfassungVorgetragen auf der 18. Tagung der Dtsch. Ges. gerichtl. Med., Heidelberg, September 1929.  相似文献   

5.
6.
7.
8.
9.
《Sport》2015,31(2):94-102
Anterior instability of the shoulder due to bony glenoid defects and/or Hill-Sachs lesions have recently received increasing attention and represent one possible reason for a recurrent anterior instability with or without isolated soft-tissue repair. In this review article, the newly developed concept of the glenoid track in the assessment of anterior shoulder instability is explained and different therapy options in the setting of significant bony glenoid defects, their pros and cons are discussed and illustrated by case examples.  相似文献   

10.
Schlußfolgerungen Die Auffassung und volkssittliche Wertung der Abtreibung wechselt ebenso wie ihre Ausbreitung in den verschiedenen Zeitaltern. Immer aber ist sie — dies läßt sich in der Geschichte an zahlreichen Beispielen beweisen — eine Begleiterscheinung des Verfalles gewesen, ein Entartungszeichen, das auf die Gefährdung eines Volkes und seiner Gesundheit hinwies.Es ist nicht die Eigenart des Nationalsozialismus, diese Mahnzeichen lediglich zu registrieren und untätig der Katastrophe ihren Lauf zu lassen. Der nationalsozialistische Staat wird mit allen überhaupt nur erdenklichen Mitteln und mit aller Kraft dem drohenden Verderben Einhalt gebieten.Die kurzen allgemeinen Ausführungen mit ihren erschreckenden Zahlen beweisen, daß das Problem der Abtreibung der Schlüssel zur Volksgesundheit und zur Stärke der Nation ist. Ihre Bekämpfung ist daher nicht nur eine kriminelle, sondern eine der wichtigsten politischen Aufgaben des jungen Staates, der sie mit der ihm eigenen Zähigkeit und Intensität lösen wird.  相似文献   

11.

Background

Dacryocystographic evaluation of the location of stenoses of the lacrimal pathways was carried out in patients with epiphora to define the frequency and morphology of canalicular stenosis.

Patients and methods

Digital subtraction angiography (DSA) dacryocystograms of 55 consecutive patients with severe epiphora and stenoses of the lacrimal draining system were reviewed in a consensus between three evaluators to determine radiomorphologic criteria for the diagnosis of canalicular stenosis. In 9 cases 3D rotational dacryocystography was additionally used.

Results

A total of 80 stenotic lesions were detected including 19 (24%) canalicular, 26 (32%) saccal and 35 (44%) ductal stenoses. In 9 of the patients 3D rotational dacryocystography was used to differentiate between canalicular (n=4) and saccal (n=5) stenosis. Increased resistance during continuous injection of contrast material and lack of distension of the distal ductal system were the main criteria for diagnosis of canalicular stenosis.

Conclusion

Presaccal stenoses accounted for nearly 25% of the stenoses found in this study. This type of stenosis occurs frequently and should not be overlooked on dacryocystography. 3D rotational dacryocystography may be helpful in unclear cases.  相似文献   

12.
13.
Early detection and subsequent removal of colorectal polyps have been shown to constitute an effective approach for decreasing the incidence of colorectal cancer. The lack of an ideal modality for colorectal polyp screening stimulated interest in the development of CT-colonography and MR-colonography. Both techniques allow the colon to be analyzed in a cross-sectional as well as a virtual endoscopic format. Causing no side-effects and not concerning for radiation exposure MR-colonography warrants further consideration. Additional to detecting polyps down to 6 mm in size the inner wall contour and the morphology of the colonic wall itself can be assessed. New developments like fecal tagging will increase patients acceptance comparing to other diagnostic techniques. In search of an ideal modality for polyp screening MR-colonography will become a potent option in the diagnostic arsenal.  相似文献   

14.
ZusammenfassungZielsetzung Ziel der Studie war es, eine neue Inversions-recovery-2D-single-shot-TrueFISP-Technik mit der etablierten Inversion-recovery-TurboFlash-Technik hinsichtlich der diagnostischen Genauigkeit in der Beurteilung der Myokardvitalität zu vergleichen.Material und Methoden Zwölf Patienten mit Myokardinfarkt wurden an einem 1,5-Tesla-MRT-Gerät (Sonata, Siemens Medical Solutions) 10 min nach Applikation einer einfachen Dosis Multihance (0,1 mmol/kg Körpergewicht) mit einer 2D-Mehrschichttechnik (inversion recovery single shot TrueFISP), die es erlaubt, die komplette kurze Achse während einer Atemanhaltephase zu erfassen, und einer 2D-Einzelschichttechnik (inversion recovery TurboFlash) untersucht. Für beide Techniken wurde die Signalintensität in normalem Myokard, im Infarktareal und im Ventrikel bestimmt. Das Kontrast-zu-Rausch-Verhältnis zwischen avitalem und vitalem Myokard wurde bestimmt. Die Flächen der hyperintensen Infarktregionen wurden für beide Techniken verglichen.Ergebnisse Die Single-shot-2D-IR-TrueFISP-Sequenz zeigt ein niedrigeres Kontrast-zu-Rausch-Verhältnis im Vergleich zur IR-TurboFlash-Sequenz (Mittelwerte 6,9 vs. 12,5) in der Differenzierung von vitalem und avitalem Myokard. Die Beurteilung des Infarktvolumens ist jedoch mit sehr guter Korrelation beider Techniken möglich (r=0,97, p <0,036). Darüber hinaus ist die Bestimmung der transmuralen Ausdehnung des Infarkts mit beiden Techniken mit vergleichbarer räumlicher Auflösung möglich.Schlussfolgerung Die Inversion-recovery-2D-single-shot-TrueFisp-Technik erlaubt eine zuverlässige Detektion des Infarktareals, eine genaue Bestimmung der Infarktfläche und eine hochauflösende Beurteilung der transmuralen Ausdehnung des Infarktareals während einer Atemanhaltephase.  相似文献   

15.
Ohne ZusammenfassungInzwischen haben wir eine Ertrinkungslunge bei einem Erhängten in 3 m Wassertiefe innerhalb von 65 Std erzeugen können (S.-Nr. 479/62).  相似文献   

16.
17.
Virtuelle Realität in der Neurochirurgie   总被引:1,自引:0,他引:1  
DEFINITION: Virtual reality enables users to immerse themselves in a virtual three-dimensional world and to interact in this world. The simulation is different from the kind in computer games, in which the viewer is active but acts in a nonrealistic world, or on the TV screen, where we are passively driven in an active world. In virtual reality elements look realistic, they change their characteristics and have almost real-world unpredictability. USE OF VIRTUAL REALITY: Virtual reality is not only implemented in gambling dens and the entertainment industry but also in manufacturing processes (cars, furniture etc.), military applications and medicine. Especially the last two areas are strongly correlated, because telemedicine or telesurgery was originated for military reasons to operate on war victims from a secure distance or to perform surgery on astronauts in an orbiting space station. In medicine and especially neurosurgery virtual-reality methods are used for education, surgical planning and simulation on a virtual patient.  相似文献   

18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号