Added value of dual-energy computed tomography versus single-energy computed tomography in assessing ferromagnetic properties of ballistic projectiles: implications for magnetic resonance imaging of gunshot victims.

OBJECTIVE The objective of this study was to assess the discriminative power of dual-energy computed tomography (DECT) versus single-energy CT (SECT) to distinguish between ferromagnetic and non-ferromagnetic ballistic projectiles to improve safety regarding magnetic resonance (MR) imaging studies in patients with retained projectiles. MATERIALS AND METHODS Twenty-seven ballistic projectiles including 25 bullets (diameter, 3-15 mm) and 2 shotgun pellets (2 mm each) were examined in an anthropomorphic chest phantom using 128-section dual-source CT. Data acquisition was performed with tube voltages set at 80, 100, 120, and 140 kV(p). Two readers independently assessed CT numbers of the projectile's core on images reconstructed with an extended CT scale. Dual-energy indices (DEIs) were calculated from both 80-/140-kV(p) and 100-/140-kV(p) pairs; receiver operating characteristics curves were fitted to assess ferromagnetic properties by means of CT numbers and DEI. RESULTS Nine (33%) of the projectiles were ferromagnetic; 18 were nonferromagnetic (67%). Interreader and intrareader correlations of CT number measurements were excellent (intraclass correlation coefficients, >0.906; P<0.001). The DEI calculated from both 80/140 and 100/140 kV(p) were significantly (P<0.05) different between the ferromagnetic and non-ferromagnetic projectiles. The area under the curve (AUC) was 0.75 and 0.8 for the tube voltage pairs of 80/140 and 100/140 kV(p) (P<0.05; 95% confidence interval, 0.57-0.94 and 0.62-0.97, respectively) to differentiate between the ferromagnetic and non-ferromagnetic ballistic projectiles; which increased to 0.83 and 0.85 when shotgun pellets were excluded from the analysis. The AUC for SECT was 0.69 and 0.73 (80 and 100 kV[p], respectively). CONCLUSIONS Measurements of DECT combined with an extended CT scale allow for the discrimination of projectiles with non-ferromagnetic from those with ferromagnetic properties in an anthropomorphic chest phantom with a higher AUC compared with SECT. This study indicates that DECT may have the potential to contribute to MR safety and allow for MR imaging of patients with retained projectiles. However, further studies are necessary before this concept may be used to triage clinical patients before MR.

Victims of War must be loyal to deserve protection: International law and national legislation on enemy aliens 1907-1918

In international law the internment of civilians has only been regulated in writing in the context of the 4th Geneva Convention of 1949. Nevertheless this did not mean that civilians were not protected by at least some rules of customary international law before that date and especially in World War I. Furthermore specialists of international law expected states – at least those considered to be part of the community of civilized nations – to continue to treat all men equal before the law even in wartime. As research already conducted (Bird, Panayi, Fischer) has shown, this was not the case during World War I. Based on these findings the presentation proposed here wants to look into the development of international law and into some national preparations for treating so called “enemy aliens” in the period before 1914 (Austria-Hungary, Australia, United Kingdom), in order to see to what extent principles of international law protecting civilians from the consequences of war can be detected in the pre-war preparations. As far as can be judged so far the issue of loyalty was central in this context. Looking at the war itself, the presentation proposed here will try to look at how far the principles of international law alluded to above continued to influence the policies on “enemy aliens” in the countries mentioned and to see, how the International Committee of the Red Cross tried to use them to legitimize and expand its protective policies in regard to civilians interned in belligerent as well as neutral countries throughout the war.

Disclosure attitudes and social acknowledgement as predictors of posttraumatic stress disorder symptom severity in Chinese and German crime victims

Objective: Only rare data exist comparing cross-cultural aspects of civilian traumatization. We compared prevalence rates of posttraumatic stress disorder (PTSD) in German and Chinese crime victims, and investigated the cross-cultural effect of 2 interpersonal predictors. Method: German (n = 151) and Chinese (n = 144) adult crime victims were assessed several months postcrime. The parallel questionnaire set assessed PTSD symptom severity, disclosure attitudes, social acknowledgement, and demographic and crime characteristics. Results: German and Chinese participants differed significantly in their PTSD symptom severity. However, in both samples, disclosure attitudes and social acknowledgement predicted PTSD symptom severity with a similar strength, in addition to the effects of other PTSD predictors. Conclusions: The results suggest that interpersonal variables are predictors of PTSD symptom severity in both cultures and should be included in etiologic models of PTSD.

Posttraumatic anger in crime victims: Directed at the perpetrator and at the self

This study investigated the targets of anger that are most strongly involved in posttraumatic anger. Using a sample of 218 crime victims, the authors assessed the levels of anger at potential targets (perpetrator, criminal justice system, third persons, and the self ) and their association with severity of posttraumatic stress disorder (PTSD) symptoms. The results revealed that anger was most strongly directed at the perpetrator and at the self, and that anger at other targets was low. Moreover, anger at the perpetrator and at the self showed strong associations with PTSD symptoms, whereas the associations of anger at other targets with PTSD symptoms were low.

The effects of legal involvement on crime victims' psychological adjustment

The purpose of this chapter is to examine the effects of legal involvement of crime victims on their psychological adjustment. First, causes of possible effects are described, which may be located within the procedure or the outcome of the legal process. Then, the available evidence is reviewed, most of it suggesting that legal involvement does not strongly affect the victims' psychological adjustment, neither negatively nor positively. The chapter continues with a discussion of whether victims should be advised to report the assault to the police or not, and it describes relevant decision criteria, such as victim adjustment retributive justice, victim compensation, victim security and societal security. Finally, suggestions for future research are outlined, pointing to necessary methodological improvements in the design of future studies on legal involvement.

Does perpetrator punishment satisfy victims' feelings of revenge?

Criminal victimization often provokes strong feelings of revenge. Two studies were conducted to investigate whether legal punishment of the perpetrator reduces victims’ feelings of revenge. A cross-sectional study of 174 crime victims revealed that punishment severity does not predict feelings of revenge at a time several years after the trial. A longitudinal study of 31 crime victims revealed that, for the time interval from a few weeks before the trial to a few weeks after the trial, punishment severity significantly predicts a decrease in feelings of revenge; nevertheless intraindividual and interindividual stability of these feelings was high. Taken together, results of the two studies suggest that perpetrator punishment only partially, and moreover only transitorily, satisfies victims’ feelings of revenge. Therefore, satisfaction of victims’ feelings of revenge cannot be taken as empirical justification for tightening of sentencing norms.

Secondary victimization of crime victims by criminal proceedings

It is conceivable that criminal proceedings cause psychological harm to the crime victims involved, that is, cause secondary victimization. To investigate this hypothesis, negative and positive effects of criminal proceedings were investigated, as perceived by 137 victims of violent crimes who were involved in trials several years previously. Trial outcome and procedure variables were measured as potential causes of secondary victimization. Results show a high proportion of victims reporting overall negative effects. Powerful predictors were outcome satisfaction and procedural justice, but not subjective punishment severity, interactional justice, and psychological stress by criminal proceedings. The practical implications of the results pertain to whether victims should be advised to report the crime to the police or not, and to appropriate prevention and intervention measures of secondary victimization by criminal proceedings.

Plant genotype affects the quality of oilseed rape (Brassica napus) for adults and larvae of the pollen beetle (Meligethes aeneus)

Plant quality is one of the main factors influencing the fitness of phytophagous insects. Plant quality can vary not only among genotypes of the same host plant species, but also relative to the insect sex or its life stage. In the present study, the performance of larvae and adults of the pollen beetle (Meligethes aeneus F., Coleoptera: Nitidulidae), a major insect pest of oilseed rape crops, is compared on six genotypes of oilseed rape (Brassica napus). All of the traits that are measured vary among genotypes, and comprise larval developmental duration, life span of unfed emerging adults and survival time of field-sampled adults fed with pollen from the different genotypes. No correlation is found between insect performance and quantity of food available, showing that the quality of the food (i.e. pollen) is the fitness determinant for this insect species. Additionally, the performance of larvae and adults is also not correlated despite use of the same plant genotypes, suggesting that the determinants of pollen quality differ at least partially between both life stages. It is hypothesized that this may be a result of extensive differences in diet breadth between the life stages: larvae are specialists of brassicaceous plants, whereas adults are generalists. Finally, it is suggested that the manipulation of plant quality to increase pollen beetle development time may comprise a valuable strategy for favouring biological control by natural enemies of this pest; for example, as a result of extending the vulnerability window of larvae to attack by parasitoids.