Publications by authors named "Stoneham G"

Imported goods create value in destination countries but also create biosecurity risk. Although widely used in other domains of the economy, risk markets have not been created to manage losses that occur when exotic pests and diseases are introduced with traded goods. In this article we show that not all biosecurity risks are insurable.

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Access to sonographers and sonologists is limited in many communities around the world. Telerobotic sonography (robotic ultrasound) is a new technology to increase access to sonography, providing sonographers and sonologists the ability to manipulate an ultrasound probe from a distant location and remotely perform ultrasound examinations. This narrative review discusses the development of telerobotic ultrasound systems, clinical studies evaluating the feasibility and diagnostic accuracy of telerobotic sonography, and emerging use of telerobotic sonography in clinical settings.

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A service evaluation was undertaken with 10 participants identifying as trans men who received voice and communication group therapy and 12-month follow-up at the London Gender Identity Clinic between February 2017 and March 2018, to investigate levels of satisfaction, how helpful they found the program in facilitating vocal change and skill development, and whether they would recommend it to others. Participant evaluations of and rating of masculinity of voice, and level of feeling with voice, evaluations of voice skills and changes in speaking and reading fundamental frequency were retrospectively reviewed and analyzed. Six participants reported being with the service; four were .

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Purpose: To evaluate the hypothesis that power-injectable (PI) totally implanted venous access devices (TIVADs) situated in the arm are associated with more frequent complications and complication-related removal than non-power-injectable (NPI) arm TIVADs among adult cancer patients.

Materials And Methods: In this single-center trial, 211 adult chemotherapy patients were randomized to receive either a PI or a NPI arm TIVAD. Follow-up involved a standardized telephone interview 1 week after insertion, followed by a chest X-ray, arm X-ray, and Doppler ultrasound at 3 months and 12 months.

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Purpose: Placement of arm ports, or totally implanted venous access devices, is a common practice in our interventional radiology suite. We implant a miniaturized port in the upper arm for the provision of long-term chemotherapy. We hypothesized that there was general satisfaction with these arm ports and they have a minimal negative impact on quality of life.

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Objectives: To systematically evaluate the accuracy of text descriptions and labeling of radiologic images published in the Canadian Journal of Emergency Medicine (CJEM). Error detection by radiologists and emergency physicians and the clinical significance and educational value of these errors were assessed. Errors were also correlated with radiologist involvement in publication and imaging modality.

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Purpose: To determine the frequency of arm port catheter fracture and embolization related to the Cook Vital Port Mini Titanium.

Materials And Methods: A retrospective audit of our Cerner Radiology Information System was performed between June 1, 2006, and June 30, 2011, to determine the number of Cook arm venous ports implanted and the frequency of foreign body retrievals related to catheter fracture for these arm ports.

Results: A total of 691 arm implantations of the Cook Vital Port during the 5-year time frame were analysed.

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Introduction: To assess the incidence and clinical significance of pneumoperitoneum after radiologic percutaneous gastrojejunostomy (PGJ) tube insertion.

Methods: Sixteen subjects were prospectively assessed after imaging-guided PGJ tube insertion to discern the incidence of pneumoperitoneum related to specific clinical signs and symptoms. Computed tomography of the abdomen and the pelvis was performed immediately after PGJ insertion.

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Objective: The maintenance of post-operative lordosis has been shown to be a key factor in decreasing adjacent level disc stress. Previous studies of the PEEK (polyether ketone) cage have used intervertebral bony fusion as the primary measure of surgical success; however, little is known about its effects on spinal curvature. Our objective was to compare the PEEK cage to the cervical plate with respect to the maintenance of cervical lordosis at one year.

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Objectives: Interpretation of ventricular volume on computed tomography scans of hydrocephalus patients is usually subjective. The objective of this study was to determine whether radiological assessment of interval change correlates better with an objective calculated volume change or with other objective 2-dimensional estimates of ventricle volume change.

Methods/sample: Ventricular volume, Evans ratio, and frontal and occipital Horn ratio were retrospectively assessed on 95 pairs of scans from patients with a ventriculoperitoneal shunt.

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Purpose: The progression of synovial chondromatosis to chondrosarcoma is very rare. Distinction between these two entities may be difficult on histology alone, and should be based on clinical, radiographic and microscopic evidence. Immunohistochemical markers that would facilitate differentiation between synovial chondromatosis and chondrosarcoma are currently being investigated.

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Background: Ultrasound guidance for central and peripheral venous access has been proven to improve success rates and reduce complications of venous cannulation. Appropriately trained and experienced operators add significantly to diminished patient morbidity related to venous access procedures. We discuss a patient who required an arterial stent-graft to prevent arterial hemorrhage following inadvertent cannulation of the proximal, ventral, right subclavian artery related to unsuccessful ultrasound guided access of the subclavian vein.

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We present a case of serologically proved West Nile virus (WNV) flaccid paralysis of the right upper extremity. Radiologic correlation revealed striking T2 hyperintensities in the anterior horns of the cervical spinal cord, similar to those seen in cases of poliomyelitis. Recognition of the MR imaging findings in cases of WNV flaccid paralysis can provide early evidence of infection.

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Spontaneous epidural haematoma is rare in pregnancy and only five cases have been reported. We present a case of a 31-year-old female G2P1 who at 32 weeks of gestation developed progressive ascending paralysis and numbness to a level of approximately T4. An urgent MRI of the spine was performed, which demonstrated a posterior epidural lesion at T1-T4 level.

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General and isolated cervical positional tests are used to screen for potential vertebro-basilar insufficiency (VBI). There is limited research evaluating vertebral artery blood flow in these positions to justify the rationale of progressive mechanical stress occurring to the arteries. The purpose of the study was to determine vertebral artery blood flow in six cervical positions used in clinical practice.

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Purpose: To determine if design modifications to the Gray-St. Louis gastrojejunostomy catheter would improve its deployment and utilization characteristics.

Methods: A modified catheter and the Gray-St.

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An investigation into friendship skills of pre-school children with specific language impairment was carried out in both mainstream and specialist play settings. Significant differences in onlooker behaviour were found suggesting that the children benefited from observation and information-processing time within their mainstream play setting. The amount of solitary play behaviour found within the specialist setting supported these findings.

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Objective: Patients with cancer require reliable venous access for therapy and phlebotomy. Traditionally, insertion of venous ports has been performed in the operating room. However, the interventional radiology service has recently become involved in the placement of a variety of venous access devices.

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