A 60-year-old man (figure 1) was referred with an incidental abnormality in the right lower zone of his chest X-ray. He was otherwise well. Forty years previously a segment of his left lower lobe had been removed for a benign lesion. Two siblings had died from intracranial haemorrhage. High-resolution computed tomography (CT) scan of the thorax (figure 2) was performed. Before any treatment was...

X-ray computed tomography (CT) systems with high resolution (also known as micro-CT systems) have been developed over the last two decades and have been used with great success in small animal studies. A micro-CT scanner is based on the same underlying physical principle as a clinical CT scanner, but it is designed for higher-resolution imaging. It produces three-dimensional (3D) tomographic da...

Management of patients carrying packets of drugs in the digestive tract is a frequent medical problem. We report on a patient who was referred by the police after ingestion of packets of cocaine. After spontaneous elimination of 81 drug packets, the patient had three unremarkable stools. A plain abdominal X-ray disclosed no residual packet but computed tomography (CT) scan showed one in the sto...

A 60-year-old man (figure 1) was referred with an incidental abnormality in the right lower zone of his chest X-ray. He was otherwise well. Forty years previously a segment of his left lower lobe had been removed for a benign lesion. Two siblings had died from intracranial haemorrhage. High-resolution computed tomography (CT) scan of the thorax (figure 2) was performed. Before any treatment was...

CT scanning is an important tool in the evaluation of trauma patients. We review a case involving a trauma patient in which a cervical spine computed tomography (CT) artifact affected decision-making by physicians. The CT artifact mimicked bilateral dislocated facets (51-B1.1). On the basis of CT findings, the patient was transferred to a different hospital for evaluation. Discrepancy between t...

BACKGROUND AND PURPOSE For CT scan planning, scan projection radiographs (SPR) are used. Tube tension and current for head SPR can be reduced to a minimum because of the small head diameter and because only high-contrast structures need to be visualized for planning. The goal of this study was to investigate SPR of the head in respect to effective doses, the influence of dose-reduction measures...

Edge illumination (EI) x-ray phase contrast computed tomography (CT) can provide threedimensional distributions of the real and imaginary parts of the complex refractive index ( δ β = − + n 1 i ) of the sample. Phase retrieval, i.e. the separation of attenuation and refraction data from projections that contain a combination of both, is a key step in the image reconstruction process. In EI-base...

Background Prior research suggests that diabetes mellitus (DM) is associated with increasing risk for developing cavitary lung disease in patients with pulmonary tuberculosis (TB). Additionally, chest computed tomography (CT) scan may be more sensitive than chest X-ray in detecting cavitary disease in such patients. The aim of this study was to compare the performance of chest CT to chest X-ray...

CT Scan is based on the x-ray principal: as x-rays pass through the body they are absorbed or attenuated (weakened) at differing levels creating a matrix or profile of x-ray beams of different strength. This x-ray profile is registered on film, thus creating an image. In the case of CT. Image processing uses for detecting for objects of CT images. Edge detection; which is a method of determinin...