Virtual casting of stab wounds in cartilage using micro-computed tomography

In homicidal stabbings using a serrated knife, stab wounds involving costal cartilage leave striations on the cut surface of the cartilage from the serration points on the blade edge. Class characteristics of the serrated blade can be determined from the striation marks, and individualizing characteristics may be seen also. The traditional method for recording the striation marks involves the pernickety technique of casting with dental impression material. We assessed the potential utility of micro-computed tomography scanning of the stab track as a technique for nondestructive recording of striation patterns and virtual casting of them. Stab tracks in porcine cartilage, produced with a coarsely serrated blade, were scanned with a bench-top micro-computed tomography scanner. The typical irregularly regular striation pattern could be demonstrated, and the images manipulated, using proprietary software to produce a virtual cast. Whether the technology will have sufficient resolution to image not only class characteristic tool marks but also the much finer individualizing tool marks remains to be evaluated, but the technology shows considerable promise.     

Validation of tool mark analysis of cut costal cartilage

This study was designed to establish the potential error rate associated with the generally accepted method of tool mark analysis of cut marks in costal cartilage. Three knives with different blade types were used to make experimental cut marks in costal cartilage of pigs. Each cut surface was cast, and each cast was examined by three analysts working independently. The presence of striations, regularity of striations, and presence of a primary and secondary striation pattern were recorded for each cast. The distance between each striation was measured. The results showed that striations were not consistently impressed on the cut surface by the blade's cutting edge. Also, blade type classification by the presence or absence of striations led to a 65% misclassification rate. Use of the classification tree and cross-validation methods and inclusion of the mean interstriation distance decreased the error rate to c. 50%.     

Sudden,unexpected death following typhoid-cholera vaccination

A previously healthy 33-year-old Australian male died suddenly and unexpectedly 8 h after a typhoid-cholera vaccination. Such facalities are extreme rarities and the present case is the first in which postmortem measurement of serum immunoglobulins has been undertaken. The clinical course and necropsy findings suggest that death was the result of a slowly evolving systemic anaphylactic reaction which terminated in hypotension and righs heart failure. The deceased was probably atopic. The current recommendations for the vaccination of international travellers against typhoid and cholera are discussed.     

The effect of sexual priming cues on emotional recognition in nonviolent child sexual abusers: a preliminary study

This article describes a study that used a computer-based task to investigate the emotional recognition skills of child sexual abusers. The experiment consisted of two phases (prime and probe) and measured both response time and error rates to facial expressions. The priming phase of the experiment consisted of the presentation of short phrases via computer of either sexual or neutral content. The probe phase of the experiment consisted of the presentation of adult facial expressions depicting either the emotion fear or surprise. Results showed child sexual abusers to be slightly less accurate overall. Furthermore, contrary to prediction, the effect of sexual priming appeared to make child sexual abusers actually better at recognizing fearful faces (p = .055). This result is discussed in relation to current victim empathy theory and treatment implications for sexual offenders.     

Cardiac sarcoidosis with spontaneous rupture of the right ventricle

A 56-year-old woman died suddenly and unexpectedly of a cardiac tamponade due to spontaneous rupture of the right ventricle. The cardiac rupture occurred on the basis of clinically unsuspected cardiac sarcoidosis. Sudden death due to spontaneous rupture of a cardiac chamber is a previously unreported complication of sarcoidosis.     

Development of a Computer‐Assisted Forensic Radiographic Identification Method Using the Lateral Cervical and Lumbar Spine

Medical examiners and coroners (ME/C) in the United States hold statutory responsibility to identify deceased individuals who fall under their jurisdiction. The computer‐assisted decedent identification (CADI) project was designed to modify software used in diagnosis and treatment of spinal injuries into a mathematically validated tool for ME/C identification of fleshed decedents. CADI software analyzes the shapes of targeted vertebral bodies imaged in an array of standard radiographs and quantifies the likelihood that any two of the radiographs contain matching vertebral bodies. Six validation tests measured the repeatability, reliability, and sensitivity of the method, and the effects of age, sex, and number of radiographs in array composition. CADI returned a 92–100% success rate in identifying the true matching pair of vertebrae within arrays of five to 30 radiographs. Further development of CADI is expected to produce a novel identification method for use in ME/C offices that is reliable, timely, and cost‐effective.     

The Institutional Design Frontiers of Publicness and University Performance

This introduction to the symposium on the institutional design frontiers of publicness and university performance summarizes the range of diverse intellectual and practical perspectives converging on the idea that issues of design and publicness are important for thinking about the future of higher education. Collectively, the articles featured in this symposium demonstrate that the challenges facing higher education exhibit assorted social, economic, and political complexities. Public administration perspectives can play a key role in understanding and reshaping our higher education system into a more responsive social enterprise.     

Improving caregiver attendance at forensic service users’ psychiatric clinic appointments

In Singapore, families play an important role caring for mentally disordered offenders. They are particularly important in cases where courts oblige psychiatric assessment, because they provide corroborating information not otherwise volunteered. However, their attendance is generally low. Our quality improvement project sought to increase caregiver attendance at outpatient visits. We followed WHO guidelines for quality improvement, determined the root cause of poor attendance, and devised three Plan–Do–Study–Act cycles over six weeks in late 2013. We followed their impact for 12 months. Case managers and medical social workers implemented three strategies to address issues of poor communication and awareness, which led to poor attendance. Prior to our project, caregivers attended 47% of outpatient visits. Following the implementation of our strategies, rates rose to 70%, sustained over the 12 following months. The entire case management department adopted our strategies. Simple changes to standard operating procedures improved the rate of caregiver attendance at follow-up appointments.