Explore the vast range of titles available.

The major and minor salivary glands of the head and neck are important structures that contribute to many of the normal physiologic processes of the aerodigestive tract. The major salivary glands are routinely included within the field of view of standard neuroimaging, and although easily identifiable, salivary pathology is relatively rare and often easy to overlook. Knowledge of the normal and abnormal imaging appearance of the salivary glands is critical for forming useful differential diagnoses, as well as initiating proper clinical workup for what are often incidental findings. The purpose of this review is to provide a succinct image-rich article illustrating relevant anatomy and pathology of the salivary glands via an extensive review of the primary literature. In Part 1, we review anatomy as well as provide an in-depth discussion of the various infectious and inflammatory processes that can affect the salivary glands.

PurposeThe imaging of primary and metastatic brain tumours is very complex and relies heavily on advanced magnetic resonance imaging (MRI). Utilisation of these advanced imaging techniques is essential in helping clinicians determine tumour response after initiation of treatment. Many options are currently available to treat brain tumours, and each can significantly alter the brain tumour appearance on post-treatment imaging. In addition, there are several common and uncommon treatment-related complications that are important to identify on standard post-treatment imaging.MethodsThis article provides a review of the various post-treatment-related imaging appearances of brain neoplasms, including a discussion of advanced MR imaging techniques available and treatment response criteria most commonly used in clinical practice. This article also provides a review of the multitude of treatment-related complications that can be identified on routine post-treatment imaging, with an emphasis on radiation-induced, chemotherapy-induced, and post-surgical entities.Summary/ConclusionAlthough radiological evaluation of brain tumours after treatment can be quite challenging, knowledge of the various imaging techniques available can help the radiologist distinguish treatment response from tumour progression and has the potential to save patients from inappropriate alterations in treatment. In addition, knowledge of common post-treatment-related complications that can be identified on imaging can help the radiologist play a key role in preventing significant patient morbidity/mortality.Teaching points• Contrast enhancement does not reliably define tumour extent in many low-grade or infiltrative gliomas.• Focal regions of elevated cerebral blood volume (rCBV) on dynamic susceptibility contrast (DSC) perfusion-weighted imaging are suggestive of tumour growth/recurrence.• Brain tumour treatment response criteria rely on both imaging and clinical parameters.• Chemotherapeutic agents can potentiate many forms of radiation-induced injury.• Ipilimumab-induced hypophysitis results in transient diffuse enlargement of the pituitary gland.

PurposeBorn-again global internationalization is a rarely researched topic. Especially process-oriented studies are largely missing. In loss modes concerning their socioemotional wealth (SEW), family businesses take more risks and can be informative examples of born-again global internationalization.Design/methodology/approachThis article analyzes the process of born-again global internationalization of a mature family business triggered by succession in an SEW loss mode. The interplay of dynamic capabilities (DCs) as drivers and SEW preservation guides the in-depth analysis based on an interpretative single case study design.FindingsThe analysis reveals a model with (1) the personal and familial level of the business family, (2) the bonding and transfer level between the business family and the family business and (3) the organizational level as three levels of DCs as drivers of born-again global internationalization in family businesses and SEW preservation as a continuously influencing context.Originality/valueThe article contributes to push forward the fragmented level of knowledge in the field of born-again global internationalization of family businesses. It brings together the triggering phase of born-again global internationalization with the later phases (driving successful rapid internationalization). In particular, it explores how the triggering factors on the family level can be translated into the development of capabilities on the firm level to drive successful internationalization. Based on these insights, the article offers novel implications for research and practice.

The salivary glands are small structures in the head and neck, but can give rise to a wide variety of benign and malignant pathology. When this occurs, patients may present with palpable swelling, although it is quite common that they are asymptomatic and a salivary gland mass was discovered as an incidental finding on imaging performed for another reason. It is, therefore, critical that radiologists pay careful attention to the salivary glands and have working knowledge of the key differentiating features of the most common neoplastic and nonneoplastic etiologies of salivary gland masses. The purpose of this review is to provide a succinct image-rich article illustrating the various causes of salivary gland masses via an extensive review of the primary literature. In Part 2, we discuss neoplasms and tumor-like lesions of the salivary glands with a key emphasis on specific imaging features of the most common pathologic entities.

Understanding the solid target dynamics resulting from the interaction with an ultrashort laser pulse is a challenging fundamental multi-physics problem involving atomic and solid-state physics, plasma physics, and laser physics. Knowledge of the initial interplay of the underlying processes is essential to many applications ranging from low-power laser regimes like laser-induced ablation to high-power laser regimes like laser-driven ion acceleration. Accessing the properties of the so-called pre-plasma formed as the laser pulse’s rising edge ionizes the target is complicated from the theoretical and experimental point of view, and many aspects of this laser-induced transition from solid to overdense plasma over picosecond timescales are still open questions. On the one hand, laser-driven ion acceleration requires precise control of the pre-plasma because the efficiency of the acceleration process crucially depends on the target properties at the arrival of the relativistic intensity peak of the pulse. On the other hand, efficient laser ablation requires, for example, preventing the so-called “plasma shielding”. By capturing the dynamics of the initial stage of the interaction, we report on a detailed visualization of the pre-plasma formation and evolution. Nanometer-thin diamond-like carbon foils are shown to transition from solid to plasma during the laser rising edge with intensities < 1016 W/cm². Single-shot near-infrared probe transmission measurements evidence sub-picosecond dynamics of an expanding plasma with densities above 1023 cm−3 (about 100 times the critical plasma density). The complementarity of a solid-state interaction model and kinetic plasma description provides deep insight into the interplay of initial ionization, collisions, and expansion.A novel, single-shot probing technique visualizes the ultrafast laser-induced solid-to-plasma transition. The entire target dynamics (ionization to overdense plasma) is elucidated by combining solid-state interaction model and kinetic plasma description.

Craniotomy and craniectomy are widely performed emergent neurosurgical procedures and are the prescribed treatment for a variety of conditions from trauma to cancer. It is vital for the emergency radiologist to be aware of expected neuroimaging findings in post-craniotomy and craniectomy patients in order to avoid false positives. It is just as necessary to be familiar with postsurgical complications in these patients to avoid delay in lifesaving treatment. This article will review the commonly encountered normal and abnormal findings in post-craniotomy and craniectomy patients. The expected postoperative CT and MRI appearance of these procedures are discussed, followed by complications. These include hemorrhage, tension pneumocephalus, wound/soft tissue infection, bone flap infection and extradural abscesses. Complications specifically related to craniectomies include extracranial herniation, external brain tamponade, paradoxical herniation, and trephine syndrome.

Sinus disease is commonly encountered, especially in the acute care setting. Imaging can support a diagnosis of sinusitis, help identify an etiology, and delineate intracranial and extracranial complications. Suspicion of complicated rhinosinusitis is an indication for contrast-enhanced computed tomography or magnetic resonance imaging. It is important for radiologists to be familiar with patient risk factors that predispose to uncommon but aggressive forms of sinus disease such as invasive fungal sinusitis. Lastly, many conditions, ranging from benign to malignant, can mimic rhinosinusitis clinically and on imaging. Radiologists can help by recognizing these entities and facilitating appropriate referral and follow-up. This article reviews the breadth of sinus disease commonly encountered in the emergency setting, potential complications, and mimics.

Purpose – The purpose of this paper is to identify different types of organizational innovativeness in Austrian hotels and analyze their connection to (innovation) success. In the face of growing international competition, innovation is becoming increasingly important for Austria’s hotel industry. A prerequisite for innovation is organizational innovativeness. Design/methodology/approach – This paper is based on a quantitative survey of 255 Austrian hotel businesses with a minimum of five employees. Innovativeness was measured by three dimensions (willingness, ability and possibility to innovate) and success by five dimensions (overall performance: financial, market and employee-related success; innovation success: product and process innovations). Findings were obtained by combining an exploratory factor analysis with a cluster analysis. Findings – Factor analysis reveals five factors determining organizational innovativeness: “cooperation as trigger for change”; “acceptance of change”; “resource based scope for change”; “pluralism as trigger for change”; and “loose coupling and error-tolerance”. The cluster analysis identifies four types of hotels regarding organizational innovativeness indicating differences regarding the success dimensions: “potential innovators hindered by scarce resources and unsupportive structures”, “well-resourced conservatives”, “potential innovators hindered by a haphazard approach” and “cautious idea hunters”. On the whole, results show that a balanced configuration of organizational innovativeness combined with a cautious approach is connected with greater (innovation) success. Research limitations/implications – Key-informant and survivor biases have to be considered as all items in the questionnaire were evaluated by self-assessment of the hotel management and only successful hotels (in the sense of survival) were analyzed. One important implication is that (innovation) success depends on the system that enables it; therefore, organizational innovativeness is a precondition of successful innovations. Nevertheless, there is little research on organizational innovativeness in the service sector so far. Practical implications – This paper supports tourism businesses in understanding the concept of organizational innovativeness and its relation to (innovation) success. SMEs, which dominate the Austrian hotel industry, tend to focus on the financial aspect of innovativeness and, in general, do not consider the range of factors that constitute an organization’s innovativeness (willingness, ability and possibility to innovate) and the various outcomes. Originality/value – By combining organizational innovativeness and (innovation) success, the paper applies an important element of innovation theory to the Austrian hotel industry. The characterization of different types of hotels regarding organizational innovativeness and success enables a (self-) assessment for hotel businesses and the deduction of customized implications.

The orbits are easily identified on routine computed tomography (CT) and magnetic resonance imaging (MRI) imaging of the head and neck. Although there are many structures within the orbits, the overall structure of the globe is the most noticeable and can be an important source for pathology. In particular, many disease processes alter globe morphology and it is imperative that the radiologist be aware of not only the most common, but uncommon etiologies as well. This article provides an image-rich review of the wide range of emergent and non-emergent pathology that can result in altered globe contour.

There are a wide variety of inflammatory, infectious, and cystic lesions which may lead patients to seek acute care for facial swelling. Computed tomography (CT) has become the mainstay for imaging in the urgent/emergent setting. However, magnetic resonance imaging (MRI) can also serve as a powerful problem solving tool in the modern era. As volume continues to increase, a wide variety of facial pathology will be encountered by the emergency radiologist. Recognition of both common and uncommon pathology will assist in diagnosis and value-based care. This article serves as an image-rich review of the many causes of facial swelling with an emphasis on key imaging findings and possible complications.