Forensic imaging of projectiles using cone-beam computed tomography

In patients with gunshot injuries, it is easy to detect a projectile within the body due to the high-density of the object, but artefacts make it difficult to obtain information about the deformation and the exact location of the projectile in surrounding tissues. Cone-beam computed tomography (CBCT) is a new radiological imaging modality that allows radio-opaque objects to be localised and assessed in three dimensions. The full potential of the use of CBCT in forensic medicine has not yet been explored.In this study, three different modern projectiles were fired into the heads of pig cadavers (n = 6) under standardised conditions. Tissue destruction and the location of the projectiles were analysed separately using CBCT and multi-slice computed tomography (MDCT).The projectiles had the same kinetic energy but showed considerable differences in deformation behaviour. Within the study groups, tissue destruction was reproducible. CBCT is less severely affected by metallic artefacts than MDCT. Therefore CBCT is superior in visualising bone destruction in the immediate vicinity of the projectile and projectile deformation, whereas MDCT allows soft tissue to be evaluated in more detail.CBCT is an improved diagnostic tool for the evaluation of gunshot injuries. In particular, it is superior to MDCT in detecting structural hard-tissue damage in the immediate vicinity of high-density metal projectiles and in identifying the precise location of a projectile in the body.     

Immigrants’ interaction with the police in Finland: Is it distorted or inflammatory?

One enduring conflict area in police–minorities relations is the distrust of the police by minorities and consequently, the low level of confidence in the police among racial minorities. This stems from the impact of race in policing; and the perception that racial discrimination is a feature of criminal justice systems across the world has intensified. Moreover, race controversy is not new in police work. It is against this background that many police establishments are becoming increasingly frustrated by ethnic minority /immigrant allegations that they are being singled out as easy targets for police stop and search practices. In Finland, however, only little is known about immigrants’ views of police interaction, and perceptions of police discrimination in the country. Moreover, the police force in Finland may also be characterised by discriminatory mechanisms which are found in police institutions of other Western states where there has been more extensive research on the issue. The aim of the present study is to examine the attitude of immigrants toward the police by seeking to place the patterns of immigrants’ interaction with the police into context using their experiences as the basis of the analysis. The study also evaluates the impact of “ethnicity” in immigrants’ police experiences in our attempt to better understand how immigrants are subjected to stereotypical behaviour within the criminal justice system despite the fact that the police are tasked with carrying out their mandate to protect every citizen in the country. Thus, the interactions of immigrants with the police are our focus of analysis in our quest to understand new challenges brought about by the new immigrants in Finland. One thing is certain, however: police are not immune from racial conflict; as they continue to operate within our societies regardless of the ethnic composition of the country must be considered as a major policy issue of legal analysis. Therefore, the cultural and contextual nature of immigrants’ interaction with the police and the author's analysis will serve as the basis for assessing what may be required to ensure that discrimination is eliminated from the criminal justice system in the country.     

Dealing with Wayward Desire

The exercise of synchronic self-control is the way in which an actor can attempt to bring a desire into alignment with his better judgement at the moment and during the interval of time over which, but for the exercise of such self-control, the desire would become the actor’s preponderant desire, which the actor would then translate into an act contrary to his better judgment. The moral psychology of an actor who fails to achieve such self-control can be analyzed in two ways. One way is meant to be consistent with compatibilist metaphysics; the other with libertarian metaphysics. The implications of these analyses for the criminal law are complicated, but perhaps the most important is this: the criminal law should in principle recognize a partial excuse for an actor who exercises synchronic self-control but who gives up his effort because he believes that he can no longer continue to resist. His effort to achieve self-control thus fails, and he ends up translating into action the very desire he set out to control.

BUNDLES OF JOY: THE UBIQUITY AND EFFICIENCY OF BUNDLES IN NEW TECHNOLOGY MARKETS

This paper examines the economic logic underlying bundles andtie-in sales and uses the lessons learned from that examinationto analyze seven specific instances of bundling that have beenthe subject of antitrust scrutiny or other policy initiatives.Of particular interest are products that are nonrivalrous inconsumption, making all-you-can-eat pricing a viable candidatefor efficiency. The main economic points are the following:À-la-carte pricing may populate economic models, butmost products are bundles. They are bundles because bundlesare generally more efficient. Tie-in sales are much less commonand often not properly understood in textbook discussions. Marketforeclosure, the principal efficiency concern with tying andbundling, is likely to be exceedingly rare. The seven instancesof bundling (ties) examined in the paper are: cable television;patent pools; blanket licenses; iPods and iTunes; telephones;music albums and songs; operating systems and component programs.     

Genetic variability of RyR2 and CASQ2 genes in an Asian population

We analyzed the coding regions of the cardiac calcium-handling genes, ryanodine receptor 2 (RyR2) and calsequestrin 2 (CASQ2) for genetic variants in a healthy Chinese population (n = 95) and in a cohort of 28 sudden unexplained death victims. Mutations in RyR2 and CASQ2 have been shown to alter calcium homeostasis during excitation–contraction coupling and predispose individuals to fatal cardiac arrhythmias. The genetic screening was accomplished by denaturing high-performance liquid chromatography and DNA sequencing methods. Genetic analysis revealed the following non-synonymous genetic variations: two reported RyR2 polymorphisms; 5654G>A (G1885E) and 5656G>A (G1886S), two reported CASQ2 polymorphisms; 196A>G (T66A) and 226G>A (V76M) and one novel CASQ2 mutation; 529G>C (E177Q). The functional significance of the novel CASQ2 mutation has not been evaluated and characterized. This study shows that multiple genetic variations of the RyR2 and CASQ2 genes exist in the two study populations. The inter-individual genetic variability may underlie the different susceptibility of individuals to developing ventricular tachycardia. The research results will be valuable for which future work involving clinical and forensic samples can be based upon to distinguish potential disease-associated mutations from common polymorphisms.     

Comamonas testosteroni meningitis in a homeless man

We report a case of meningitis caused by Comamonas testosteroni in a 54-year-old, alcoholic, homeless man. He, as a pedestrian, was struck by a car and suffered multiple fractures of the facial bones including the left frontal sinus. Over the course of 2-week hospitalization, he was clinically diagnosed with multiple cerebral and cerebellar infarcts resulting in altered mental status. He was pronounced dead 15 days after the injury. At the time of autopsy, diffuse purulent meningitis was found on gross examination. A swab culture of the brain surface was positive for C. Testosteroni, a saprophytic organism commonly found in soil and water. This is the first reported case of fatal meningitis caused by this micro-organism.     

Risk assessment in offenders with intellectual disability: a comparison across three levels of security

In mainstream offender samples, several risk assessments have been evaluated for predictive validity. This study extends this work to male offenders with intellectual disabilities. Participants from high-, medium-, and low-security settings, as well as community settings, were compared on a range of risk assessments. The Violence Risk Appraisal Guide, HCR-20-Historical Scale, the Risk Matrix 2000-C (combined risk), and the Emotional Problems Scales-Internalising discriminated between groups, with participants from high security having higher scores than those in medium security, who had higher scores than those in the community. The Violence Risk Appraisal Guide, all HCR-20 scales, the Short Dynamic Risk Scale, and the Emotional Problems Scales (Internalising and Externalising) showed significant areas under the curve for the prediction of violence. The Static-99 showed a significant area under the curve for the prediction of sexual incidents. The discussion reviews the value of these various scales to intellectual disability services.     

Do drug users use less alcohol than non-drug users? A comparison of ethyl glucuronide concentrations in hair between the two groups in medico-legal cases

Two groups were selected from the remainder of hair samples that had been tested for drugs at TrichoTech for medico-legal cases: samples that tested negative (drug-negative group; N=42, age 33.4+/-7.2 years) and samples that tested positive for drugs (drug-positive group; N=57, age 32.5+/-8.8 years). A rapid, simple method to detect the ethanol metabolite, ethyl glucuronide (EtG) in hair has been developed. The hair samples were sectioned, and then submitted to overnight sonication in water. Samples then underwent SPE using anion exchange cartridges, followed by derivatisation with N,O-bis[trimethylsilyl]trifluoroacetamide (BSTFA), before confirmation by GC-MS/MS. The assay produced excellent linearity and sensitivity over the calibration range 0.02-1.0 ng/mg, assuming a 10 mg hair sample. The mean age of the two groups was not statistically different (p=0.575, Student t-test), indicating a homogeneous group. Twelve of the 57 (21.0%) hair samples of the drug-positive group tested positive for EtG, and 17 of the 42 (40.5%) hair samples of the drug-negative group tested positive for EtG. The mean concentration of EtG in the drug-positive group was 0.011 ng/mg compared to 0.107 ng/mg in the drug-negative group. When the full results of this study were subjected to statistical analysis it was shown that EtG levels in the drug-negative group were statistically higher than those found in the drug-positive group (p<0.05). This preliminary finding may be of use in the study of addiction and adds valuable data to previous studies regarding the use of EtG as a valuable marker for alcohol levels in hair.     

Fatal intoxication due to tramadol alone: case report and review of the literature

Poisoning may also lead to both coma and multiple organ failure, also in youngsters without a known major medical history. As not all toxic agents are routinely screened when a poisoning is suspected, it is useful to consider less frequently encountered poisons in certain cases. We describe the occurrence of asystole and multiple organ failure which occurred in a young man after a suspected tramadol overdose. The tramadol concentration on admission in the ICU was indeed 8 microg/ml (mg/l), far above the therapeutic range. Subsequently, the patient developed severe acute liver failure, finally leading to death. Post-mortem toxicology did not reveal any other poison responsible for this unfavourable course as only very high serum and tissue tramadol and desmethyltramadol concentrations were found. Only a few fatal poisonings attributable to tramadol alone, as observed in our case, have been reported. An overview of these cases is presented.