In this paper, a study has been carried out to analyze the factors influencing the current transformer (CT) saturation factor (KS), in particular the secondary time constant (TS) of a CT. The study identifies and analyzes the optimum value for TS as this value varies. This paper also analyses and discusses the effect of TS to the KS factor in order to calculate the CT knee point voltage (VK) in...

Figure 1. A, CT scan before empirical therapy for toxoplasmic encephalitis in an HIV-infected patient. B, CT scan 2.5 years later, after immune restoration with highly active antiretroviral therapy and 8 months without maintenance therapy for toxoplasmic encephalitis. Discontinuation of Secondary Prophylaxis for Toxoplasmic Encephalitis in Human Immunodeficiency Virus Infection After Immune Res...

This pictorial essay illustrates the imaging appearances of a wide variety of metastases to the pancreas as seen on computed tomography (CT), magnetic resonance imaging and positron emission tomography/CT. Key clinical and radiologic features (lesion distribution, non-contrast imaging appearance, enhancement pattern and pattern of spread) that may aid differentiation of primary from solitary se...

OBJECTIVE In our study, we evaluated the potential of micro-CT for the assessment of the rat knee joint using ex vivo micro-CT arthrography. The aims of the study were to introduce the technique of micro-CT arthrography and to visualize the normal anatomy of the rat knee. The secondary aims were the quantification of retropatellar cartilage thickness and the analysis of microstructural cancello...

Perforation of the rectum requires early recognition and treatment. The diagnosis of rectal perforation is sometimes difficult owing to non specific clinical presentation, especially in elderly patients, in whom, in case of acute abdomen, Computed Tomography (CT) is increasing used as first diagnostic procedure [1]. Several CT signs of gastrointestinal perforation have been described [2, 3]. Re...

We present the case of a preterm 6-month-old African American infant who developed craniosynostosis secondary to rickets. This child developed rickets and macrocephaly by the age of 6 months. His head continued to enlarge, and a 3D CT obtained when the child was 2 years old revealed metopic and bilateral coronal craniosynostosis. This CT suggested increased intracranial pressure, and therefore,...

UNLABELLED PURPOSE The aim of this systematic review was to systematically assess the potential patient-relevant benefit (primary aim) and diagnostic and prognostic accuracy (secondary aim) of positron emission tomography (PET) and PET/computed tomography (CT) in primary staging of malignant melanoma. This systematic review updates the previous evidence for PET(/CT) in malignant melanoma. ...

Heat-shock transcription factor 1 (HSF1) is a key regulator of the expression of heat-shock proteins during the heat-shock response. The C terminus of HSF1 (CT) contains both the regulatory and transcriptional activation domains. Predictors of natural disordered regions analysis predicts and our study demonstrates that CT is predominantly natively unfolded under physiological conditions but can...

CASE SERIES SUMMARY Chronic inflammatory airway disease with secondary broncholithiasis was diagnosed in two cats from CT and bronchoalveolar lavage cytological findings. In one cat with progressively worsening lower respiratory tract signs, more than 80 discrete, highly attenuating endobronchial opacities were detected on thoracic CT. The broncholiths were distributed throughout the right midd...

Six cases of syringomyelia associated with intramedullary tumor were examined by metrizamide myelography and delayed computed tomography. All cases showed opacification of syringomyelic cavities 7-24 hr after myelography. This finding suggests that metrizamide can pass through the cord substance from the subarachnoid space into a syrinx cavity in noncommunicating types of syringomyelia. It supp...