[Osteogenic tumors of bone].
CONCLUSIONS: Diagnostics and treatment of malignant bone tumors should preferably be performed in specialized centers because of significant therapeutic implications for patients. In uncertain cases, a second opinion should always be obtained. PMID: 27255551 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - June 2, 2016 Category: Radiology Authors: Jobke B, Werner M Tags: Radiologe Source Type: research

[Diagnostics of acute pulmonary embolism : An update].
Abstract Pulmonary embolism is an acute and potentially life-threatening condition requiring a differentiated diagnostic algorithm. Assessment of the risk and clinical probability are of utmost importance in order to initiate early treatment or to reliably exclude a pulmonary embolism. Computed tomography of the pulmonary arteries (CTPA) has become the non-invasive gold standard for the diagnostic approach. Alternatively, scintigraphy can also be used. A negative CTPA excludes a pulmonary embolism with a high degree of probability. Furthermore, CTPA can supply additional information, such as estimation of the righ...
Source: Der Radiologe - May 28, 2016 Category: Radiology Authors: Das M, Wildberger JE Tags: Radiologe Source Type: research

[Bone tumors : Radiologic-pathologic correlation].
PMID: 27233919 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - May 27, 2016 Category: Radiology Authors: Uhl M, Delorme S Tags: Radiologe Source Type: research

[Cartilage tumors : Pathology and radiomorphology].
This article describes the correlation of pathology and radiology in cartilage-forming skeletal tumors, in particular, enchondroma, osteochondroma, periosteal chondromas, chondroblastoma and various forms of chondrosarcoma. After reading, the radiologist should be able to deduce the different patterns of cartilage tumors on radiographs, CT, and MRI from the pathological aspects. Differentiation of enchondroma and chondrosarcoma is a frequent diagnostic challenge. Some imaging parameters, e. g., deep cortical scalloping (more than two thirds of the cortical thickness), cortical destruction, or a soft-tissue...
Source: Der Radiologe - May 27, 2016 Category: Radiology Authors: Uhl M, Herget G, Kurz P Tags: Radiologe Source Type: research

[Avoiding pitfalls in the diagnostics of bone neoplasms from pathologists point of view : Importance of reference pathology].
Abstract Bone tumors account for only approximately 1 % of the total number of malignant tumors in humans so that they are only rarely diagnosed and appropriate experience is difficult to acquire. Although the number of entities is limited there exist very different clinical and radiological images depending on the manifestation in the different regions of the skeleton. Bone tumors are also histologically structured very differently even within a particular entity. Prior to the histopathological diagnosis the location of the lesion within the entire skeleton and in relation to the tumor-bearing bone must be...
Source: Der Radiologe - May 24, 2016 Category: Radiology Authors: Werner M Tags: Radiologe Source Type: research

[Erratum to: Ductal adenocarcinoma and unusual differential diagnosis].
e P PMID: 27216409 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - May 23, 2016 Category: Radiology Authors: Scharwächter C, Schwartz CA, Haage P Tags: Radiologe Source Type: research

[Tumor-like lesions of bone].
Abstract Historically, tumor-like lesions of bone were defined as non-neoplastic bone lesions. Today, however, some of them are considered real neoplasms. They are among the most frequent bone lesions. They usually grow slowly, but occasionally they grow rapidly. Many of them can be diagnosed by plain films alone; in others, CT and MRI yield additional features for a correct diagnosis. Some lesions do not need treatment; others should be resected, and some may even recur. Non-ossifying fibroma, juvenile and aneurysmal bone cysts, fibrous and osteofibrous dysplasia and eosinophilic granuloma are presented...
Source: Der Radiologe - May 23, 2016 Category: Radiology Authors: Erlemann R, Jundt G Tags: Radiologe Source Type: research

[Follow-up for subsolid pulmonary nodules with low-dose CT : Evidence-based scheme for participants of a bronchial carcinoma screening].
PMID: 27170139 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - May 12, 2016 Category: Radiology Authors: Weinrich MJ, Avanesov M Tags: Radiologe Source Type: research

[In Process Citation].
Authors: PMID: 27142699 [PubMed - in process] (Source: Der Radiologe)
Source: Der Radiologe - May 1, 2016 Category: Radiology Tags: Radiologe Source Type: research

[Shaken baby syndrome].
Abstract The shaken baby syndrome (SBS) or shaking trauma describes the occurrence of subdural hematoma, retinal hemorrhage and diffuse injury to the brain by vigorous shaking of an infant that has a poor prognosis. Rapid cranial acceleration and deceleration leads to tearing of bridging veins, retinal hemorrhages and diffuse brain injuries. In addition to clinical symptoms, such as irritability, feeding difficulties, somnolence, apathy, seizures, apnea and temperature regulation disorders, vomiting also occurs due to increased intracranial pressure. Milder forms of SBS often go undiagnosed and the number of unrep...
Source: Der Radiologe - April 27, 2016 Category: Radiology Authors: Reith W, Yilmaz U, Kraus C Tags: Radiologe Source Type: research

[Accident or maltreatment? Radiographic X‑ray patterns in non‑accidental trauma : The concept of sentinel injuries].
Abstract The focus of this review article is on child abuse and the radiographic pattern of X‑ray findings. The radiologist should be able to recognize typical injuries resulting from child abuse. In some cases the findings are highly specific for abuse and these include metaphyseal corner fractures of the long bones in children aged up to 24 months. In other cases the fractures are not specific but highly indicative of child abuse: rib fractures, for example can be associated with child abuse in more than 50 % of the cases; however, maltreatment is difficult to diagnose without taking the entire pattern ...
Source: Der Radiologe - April 27, 2016 Category: Radiology Authors: Hirsch FW, Sorge I, Roth C, Gosemann JH Tags: Radiologe Source Type: research

[Child abuse from a pediatric perspective].
This article summarizes the most important facts pertinent to this subject. PMID: 27118368 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 27, 2016 Category: Radiology Authors: Meyer S, Poryo M, Clasen O, Schlote J, Schmidt P, Schöndorf D, Lehmann-Kannt S, Gortner L Tags: Radiologe Source Type: research

[Chronic sports injuries of the knee joint].
Abstract Chronic sports injuries of the knee joint are common and mainly caused by repetitive (micro) trauma and exertion. Chronic insertion tendinopathies and avulsion fractures and symptoms related to entrapment, friction and impingement can be pathophysiologically distinguished in athletes. In this review, we depict the characteristic magnetic resonance imaging (MRI) findings of the most commonly occurring pathologies. PMID: 27118369 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 27, 2016 Category: Radiology Authors: Mannil M, Andreisek G, Weishaupt D, Fischer MA Tags: Radiologe Source Type: research

[Nonsmoker protection works].
r M PMID: 27119731 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 27, 2016 Category: Radiology Authors: Pötschke-Langer M Tags: Radiologe Source Type: research

[Medicolegal aspects of child abuse].
l E Abstract CLINICAL ISSUE: The prevention and clinical diagnostics of maltreatment of children and adolescents represents a great challenge to all medical disciplines concerned; therefore, an interdisciplinary collaboration is indispensable. DIAGNOSTICS: Medicolegal experts require specific radiological examination methods for the differentiation between accidental and non-accidental injuries, depending on the corresponding point in question. In addition, a clear and structured radiological appraisal of the findings is necessary. On the other hand, radiologists require an appropriate succinctly phrased ques...
Source: Der Radiologe - April 26, 2016 Category: Radiology Authors: Hofer P, Brandau LM, Mützel E Tags: Radiologe Source Type: research

[The Woodpecker and the traumatic brain injury].
PMID: 27103258 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 21, 2016 Category: Radiology Authors: Reith W Tags: Radiologe Source Type: research

[Child abuse].
PMID: 27098173 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 20, 2016 Category: Radiology Authors: Reith W Tags: Radiologe Source Type: research

[Getting a picture of it : Semiotics and radiology].
PMID: 27072878 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 12, 2016 Category: Radiology Authors: Tanner JM Tags: Radiologe Source Type: research

Johann Radon : Ein Vorbereiter der Computertomographie.
PMID: 27072879 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 12, 2016 Category: Radiology Authors: Otte A Tags: Radiologe Source Type: research

[Where is the performance review?]
PMID: 27067534 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - April 11, 2016 Category: Radiology Authors: Schnitzler A Tags: Radiologe Source Type: research

[In Process Citation].
Authors: PMID: 27053139 [PubMed - in process] (Source: Der Radiologe)
Source: Der Radiologe - April 1, 2016 Category: Radiology Tags: Radiologe Source Type: research

[Autoimmune pancreatitis : An update].
Abstract CLINICAL/METHODICAL ISSUE: Autoimmune pancreatitis (AIP) is a rare disease, the pathophysiological understanding of which has been greatly improved over the last years. The most common form, type 1 AIP belongs to the IgG4-related diseases and must be distinguished from type 2 AIP, which is a much rarer entity associated with chronic inflammatory bowel disease. Clinically, there is an overlap with pancreatic cancer. Imaging and further criteria, such as serological and histological parameters are utilized for a differentiation between both entities in order to select the appropriate therapy and t...
Source: Der Radiologe - March 30, 2016 Category: Radiology Authors: Helmberger T Tags: Radiologe Source Type: research

[Occipitocervical junction : Aanatomy, craniometry and pathology].
Abstract The occipitocervical junction comprises of the occiput condyles, the atlas, and the axis. The radiological evaluation of this region is supported by craniometric measurement methods which are based on predefined anatomical landmarks. The main pathologies of the occipitocervical junction are traumatic injuries, congenital anomalies or normal variants, infections, arthropathies, and tumors. In this article, the anatomy of the occipitocervical junction as well as the most important craniometric measurement methods are explained. Moreover various pathologies and similar appearing normal variants are presented...
Source: Der Radiologe - March 30, 2016 Category: Radiology Authors: Furtner J, Woitek R, Asenbaum U, Prayer D, Schueller-Weidekamm C Tags: Radiologe Source Type: research

[Diagnostic strategy and differential therapeutic approach for cystic lesions of the pancreas].
g; M Abstract CLINICAL/METHODICAL ISSUE: Cystic pancreatic lesions (CPL) are diagnosed with increasing frequency. Because up to 60 % of CPL are classified as malignant or premalignant, every CPL should be fully investigated and clarified. Serous CPL with low risk of malignancy must be differentiated from mucinous CPL with relevant potential malignancy (intraductal papillary mucinous neoplasm IPMN) and mucinous cystic neoplasm (MCN) as well as from harmless pseudocysts. STANDARD RADIOLOGICAL METHODS: Cross-sectional imaging with computed tomography (CT) and magnetic resonance imaging (MRI) plays a cruci...
Source: Der Radiologe - March 29, 2016 Category: Radiology Authors: Mayer P, Tjaden C, Klauß M Tags: Radiologe Source Type: research

[Pancreatic neuroendocrine neoplasms].
Abstract Pancreatic neuroendocrine neoplasms (NEN) account for 1-2 % of all pancreatic neoplasms and represent a rare differential diagnosis. While some pancreatic NEN are hormonally active and exhibit endocrine activity associated with characteristic symptoms, the majority are hormonally inactive. Imaging techniques such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET) or as combined PET/CT play a crucial role in the initial diagnosis, therapy planning and control. Endoscopic ultrasound (EUS) and multiphase CT represent the reference methods f...
Source: Der Radiologe - March 22, 2016 Category: Radiology Authors: Beiderwellen K, Sabet A, Lauenstein TC, Lahner H, Poeppel TD Tags: Radiologe Source Type: research

[Pancreatic lesions].
PMID: 27000275 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - March 21, 2016 Category: Radiology Authors: Delorme S, Helmberger T Tags: Radiologe Source Type: research

[Ductal adenocarcinoma and unusual differential diagnosis].
r C Abstract Ductal pancreatic adenocarcinoma is by far the most common solid tumor of the pancreas. It has a very poor prognosis, especially in the more advanced stages which are no longer locally confined. Due to mostly unspecific symptoms, imaging is key in the diagnostic process. Because of the widespread use of imaging techniques, incidental findings are to a greater extent discovered in the pancreas, which subsequently entail further work-up. Ductal pancreatic adenocarcinoma can be mimicked by a large number of different lesions, such as anatomical variants, peripancreatic structures and tumors, rarer primar...
Source: Der Radiologe - March 21, 2016 Category: Radiology Authors: Haage P, Schwartz CA, Scharwächter C Tags: Radiologe Source Type: research

[Resectability of pancreatic cancer : New criteria].
CONCLUSION: Pancreatic resections can nowadays be more radically performed due to advances in surgical techniques. This has led to a change in the criteria for resectability, especially concerning venous tumor infiltration. PMID: 26993121 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - March 18, 2016 Category: Radiology Authors: D'Haese JG, Werner J Tags: Radiologe Source Type: research

[Pancreatitis : An update].
CONCLUSION: For the primary diagnosis for acute and chronic pancreatitis ultrasound examination is the modality of first choice followed by radiological CT and MRI with MRCP examinations. PMID: 26969182 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - March 11, 2016 Category: Radiology Authors: Schreyer AG, Grenacher L, Juchems M Tags: Radiologe Source Type: research

[Current situation of experimental radiology in Germany].
r M PMID: 26961227 [PubMed - in process] (Source: Der Radiologe)
Source: Der Radiologe - March 1, 2016 Category: Radiology Authors: Bäuerle T, Uder M Tags: Radiologe Source Type: research

[Modern imaging of renal tumors - application in diagnostics and therapy : Characterization, operation planning and therapy monitoring of renal lesions].
This article elucidates the various tools used for the diagnostics and characterization of renal lesions. The advantages and limitations of ultrasound, contrast-enhanced ultrasound (CEUS), computed tomography (CT) and magnetic resonance imaging (MRI) are presented and discussed. In addition, modern imaging features of CT and MRI, such as iodine quantification in CT as well as diffusion-weighted and perfusion imaging in MRI are presented. Lastly, recent developments in standardized reporting of renal tumors regarding the intraoperative surgical risk are presented. PMID: 26961228 [PubMed - in process] (Source: Der Radiologe)
Source: Der Radiologe - March 1, 2016 Category: Radiology Authors: Radtke JP, Teber D, Alt CD, Hadaschik BA, Hallscheidt P Tags: Radiologe Source Type: research

[In Process Citation].
Authors: PMID: 26961229 [PubMed - in process] (Source: Der Radiologe)
Source: Der Radiologe - March 1, 2016 Category: Radiology Tags: Radiologe Source Type: research

[Long-term results after balloon angioplasty of crural arteries : Which factors influence leg salvage and survival rates?]
Abstract AIM: Clinical and statistical study analysing factors with influence on success rates, procedure-related complications, and long-term results for patients who underwent angioplasty of the crural arteries. MATERIAL AND METHODS: Retrospectively we evaluated all patients who underwent angioplasty of the crural arteries due to critical chronic limb ischemia or severe claudication in the time period from 1/2002 to 12/2005. These patients were contacted in the time period from 1/2009 to 12/2010, and a follow-up examination including angiography was performed or telephone interviews were conducted with pati...
Source: Der Radiologe - February 29, 2016 Category: Radiology Authors: Tesdal IK, Krzemien CK, Weiss C Tags: Radiologe Source Type: research

[Peripheral artery disease].
PMID: 26913506 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - February 25, 2016 Category: Radiology Authors: Helmberger T Tags: Radiologe Source Type: research

[Radiation protection in interventional radiology].
Abstract The application of ionizing radiation in medicine seems to be a safe procedure for patients as well as for occupational exposition to personnel. The developments in interventional radiology with fluoroscopy and dose-intensive interventions require intensified radiation protection. It is recommended that all available tools should be used for this purpose. Besides the options for instruments, x‑ray protection at the intervention table must be intensively practiced with lead aprons and mounted lead glass. A special focus on eye protection to prevent cataracts is also recommended. The development of catara...
Source: Der Radiologe - February 25, 2016 Category: Radiology Authors: Adamus R, Loose R, Wucherer M, Uder M, Galster M Tags: Radiologe Source Type: research

[Subintimal recanalization : Indications, technique and results].
This article gives an overview of the current importance of so-called subintimal recanalization in the lower extremities. STANDARD RADIOLOGICAL METHODS: The primary technical goal of endovascular interventions in the lower extremities is the endoluminal restoration of blood circulation from the iliac arteries into the feet. METHODICAL INNOVATIONS: If endoluminal recanalization of e.g. high-grade flow-relevant stenoses or chronic total occlusion (CTO) is technically not possible, subintimal recanalization is a promising option and the only remaining minimally invasive alternative. During subintimal recanalization ...
Source: Der Radiologe - February 17, 2016 Category: Radiology Authors: Radeleff B, Sumkauskaite M, Kortes N, Gnutzmann D, Mokry T, Kauczor HU, Stampfl U Tags: Radiologe Source Type: research

[Drug-coated balloons in the treatment of peripheral artery disease (PAD) : History and current level of evidence].
CONCLUSIONS: Major advantages of the DCBs lie in leaving no stent scaffold behind, the immediate release of high drug concentrations with a single dosage, their efficacy in areas, where stents have been contra-indicated until now and its use for secondary interventions. As their effect seems to be limited in severely calcified lesions, prior plaque preconditioning or removal could be advantageous. First positive results data supporting this hypothesis do exist. PMID: 26885653 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - February 17, 2016 Category: Radiology Authors: Herten M, Stahlhoff S, Imm B, Schönefeld E, Schwindt A, Torsello GB Tags: Radiologe Source Type: research

[Principles and applications of susceptibility weighted imaging].
Abstract BACKGROUND: Susceptibility-weighted imaging (SWI), initially developed to provide an improved method for cerebral magnetic resonance (MR) venography, is now an integral part of neuroradiological diagnostics and is steadily gaining importance in non-cerebral imaging. PRINCIPLES: Tissue-inherent susceptibility differences generate a local magnetic field in which the dephasing of signal-producing protons occurs. This leads to a characteristic phase shift that can be used as a means to enhance contrast in the well-known T2*-weighted imaging. APPLICATION IN CLINICAL ROUTINE: Many medically relevant p...
Source: Der Radiologe - February 3, 2016 Category: Radiology Authors: Kurz FT, Freitag M, Schlemmer HP, Bendszus M, Ziener CH Tags: Radiologe Source Type: research

[Stent-assisted recanalization of femoropopliteal arterial occlusive disease : Influence of stent design on patency rates].
CONCLUSION: The published data are heterogeneous and comparative studies for different stent designs are completely missing. Over the past decade the patency rates after femoropopliteal stenting could be improved. According to available data stenting of short lesions  6.4 cm. Due to the heterogeneity of published data a clear benefit for a specific stent design is not obvious; however, data for interwoven stents are promising and show a tendency towards improved patency, at least for certain lesions. Randomized controlled comparative trials are needed to confirm this result. PMID: 26842999 [PubMed - as sup...
Source: Der Radiologe - February 3, 2016 Category: Radiology Authors: Treitl M, Reiser MF, Treitl KM Tags: Radiologe Source Type: research

[Erratum to: Pitfalls in mechanical recanalization].
z U PMID: 26825062 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - January 29, 2016 Category: Radiology Authors: Mühl-Benninghaus R, Yilmaz U Tags: Radiologe Source Type: research

[Imaging of the head and neck region].
Abstract Tumors of the head and neck are predominantly squamous cell carcinomas and those of the salivary glands are predominantly adenocarcinomas, adenoid cystic carcinomas and mucoepidermoid carcinomas. In 2011 the incidence of tumors of the oral cavity and pharynx in Germany was 6839 (5026 male and 1813 female) and of the larynx 1878 (1642 male and 236 female). The incidence of tumors of the nose and paranasal sinuses (467) and salivary glands (470) were much lower ( www.krebsdaten.de/abfrage ). The primary aim of imaging in head and neck cancer is staging of the disease and a precise assessment of tumor invasi...
Source: Der Radiologe - January 29, 2016 Category: Radiology Authors: Lell M, Mantsopoulos K, Uder M, Wuest W Tags: Radiologe Source Type: research

[MRI methods for pulmonary ventilation and perfusion imaging].
Abstract CLINICAL/METHODICAL ISSUE: Separate assessment of respiratory mechanics, gas exchange and pulmonary circulation is essential for the diagnosis and therapy of pulmonary diseases. Due to the global character of the information obtained clinical lung function tests are often not sufficiently specific in the differential diagnosis or have a limited sensitivity in the detection of early pathological changes. STANDARD RADIOLOGICAL METHODS: The standard procedures of pulmonary imaging are computed tomography (CT) for depiction of the morphology as well as perfusion/ventilation scintigraphy and single photon...
Source: Der Radiologe - January 27, 2016 Category: Radiology Authors: Sommer G, Bauman G Tags: Radiologe Source Type: research

[Percutaneous access for endovascular therapy of PAOD : Femoral, popliteal and pedal].
CONCLUSION: The transfemoral access remains the first choice for the treatment of patients with PAOD. Additional retrograde approaches from a more distal access constitute an alternative after failure of antegrade intervention attempts. PMID: 26801186 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - January 22, 2016 Category: Radiology Authors: Kamper L, Haage P Tags: Radiologe Source Type: research

[Selected clinically established and scientific techniques of diffusion-weighted MRI : In the context of imaging in oncology].
Abstract BACKGROUND: Diffusion-weighted imaging (DWI) is a magnetic resonance imaging (MRI) technique that was established in the clinical routine primarily for the detection of brain ischemia. In the past 15 years its clinical use has been extended to oncological radiology, as tumor and metastases can be depicted in DWI due to their hypercellular nature. PRINCIPLES: The basis of DWI is the Stejskal-Tanner experiment. The diffusion properties of tissue can be visualized after acquisition of at least two diffusion-weighted series using echo planar imaging and a specific sequence of gradient pulses. CLINIC...
Source: Der Radiologe - January 22, 2016 Category: Radiology Authors: Freitag MT, Bickelhaupt S, Ziener C, Meier-Hein K, Radtke JP, Mosebach J, Kuder TA, Schlemmer HP, Laun FB Tags: Radiologe Source Type: research

[Functional MRI 2.0 : ²³Na and CEST imaging].
[Functional MRI 2.0 : ²³Na and CEST imaging]. Radiologe. 2016 Jan 21; Authors: Haneder S, Konstandin S Abstract In recent years the purely morphological magnetic resonance imaging (MRI) has been increasingly flanked by so-called functional imaging methods, such as diffusion-weighted imaging (DWI), to obtain additional information about tissue or pathological processes. This review article presents two MR techniques that can detect physiological processes in the human body. In contrast to all other functional MR imaging techniques, which are based on hydrogen protons, the first technique...
Source: Der Radiologe - January 21, 2016 Category: Radiology Authors: Haneder S, Konstandin S Tags: Radiologe Source Type: research

[Quantitative perfusion imaging in magnetic resonance imaging].
s M Abstract CLINICAL/METHODICAL ISSUE: Magnetic resonance imaging (MRI) is recognized for its superior tissue contrast while being non-invasive and free of ionizing radiation. Due to the development of new scanner hardware and fast imaging techniques during the last decades, access to tissue and organ functions became possible. One of these functional imaging techniques is perfusion imaging with which tissue perfusion and capillary permeability can be determined from dynamic imaging data. STANDARD RADIOLOGICAL METHODS: Perfusion imaging by MRI can be performed by two approaches, arterial spin labeling (ASL) ...
Source: Der Radiologe - January 21, 2016 Category: Radiology Authors: Zöllner FG, Gaa T, Zimmer F, Ong MM, Riffel P, Hausmann D, Schoenberg SO, Weis M Tags: Radiologe Source Type: research

[Indications and results of endovascular therapy of critical limb ischemia].
CONCLUSION: The CLI is a disease with high mortality and morbidity risks. Due to the comparable amputation-free survival times with lower complication rates in the published data, in most patients an endovascular first strategy in experienced centers can be justified. PMID: 26796338 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - January 21, 2016 Category: Radiology Authors: Zimmermann A, Ludwig U, Eckstein HH Tags: Radiologe Source Type: research

[Functional brain imaging].
Abstract METHOD: Functional magnetic resonance imaging (fMRI) is a non-invasive method that has become one of the major tools for understanding human brain function and in recent years has also been developed for clinical applications. PERFORMANCE: Changes in hemodynamic signals correspond to changes in neuronal activity with good spatial and temporal resolution in fMRI. Using high-field MR systems and increasingly dedicated statistics and postprocessing, activated brain areas can be detected and superimposed on anatomical images. Currently, fMRI data are often combined in multimodal imaging, e. g. wit...
Source: Der Radiologe - January 14, 2016 Category: Radiology Authors: Gizewski ER Tags: Radiologe Source Type: research

[Mechanical thrombectomy - technique].
h W Abstract Mechanical thrombectomy with stent retrievers in acute stroke has emerged as the technique with the highest recanalization rate of therapeutic procedures available so far. Recently it was demonstrated that compared to intravenous rTPA alone, mechanical thrombectomy improves outcomes of patients with acute occlusions of intracranial arteries of the anterior circulation in several randomized clinical trials. In this article we will give an overview of the steps required for the thrombectomy procedure. PMID: 26762324 [PubMed - as supplied by publisher] (Source: Der Radiologe)
Source: Der Radiologe - January 13, 2016 Category: Radiology Authors: Yilmaz U, Mühl-Benninghaus R, Reith W Tags: Radiologe Source Type: research

[Neuroimaging of cerebral vasculitis].
l S Abstract Cerebral vasculitis can have a variety of origins. Furthermore, there are no vasculitis-specific symptoms or imaging signs and vasculitis of the CNS can mimic many other neurological diseases, which require different treatment approaches. Thus, the clinical and radiological diagnosis of cerebral vasculitis is challenging. Magnetic resonance imaging (MRI) and MR angiography (MRA) should be the radiological imaging methods of choice to assess the degree of parenchymal damage and to detect vessel wall changes. If the results are unclear digital subtraction angiography (DSA) should be pursued in order to ...
Source: Der Radiologe - January 11, 2016 Category: Radiology Authors: Wengenroth M, Saam T, Hähnel S Tags: Radiologe Source Type: research