Abstract Introduction Lung ventilation is a standard sign of life in newborns. Post-mortem computed tomography (PMCT) highly sensitive to the presence gas body including lungs. Current examinations determine pulmonary status newborns are flotation test and histology. The purpose this study was compare accuracy PMCT with for determining lung histological control as reference standard. A cut-off ...

Objective: To acknowledge the work and life of the Austrian mathematician Johann Radon, motivated by a historical narrative on the development of the computed tomography scanner. Methods: Information was obtained from journal articles, textbooks, the Nobel web site, and proceedings from mathematical symposiums. Results: The computed tomography scanner changed the paradigm of medical imaging. Th...

This study set out to determine whether quantitative features of lung computed tomography scans could be identified that would lead to a tightly defined normal range for use in assessing patients. Fourteen normal subjects with apparently healthy lungs were studied. A technique was developed for rapid and automatic extraction of lung field data from the computed tomography scans. The Hounsfield ...

PURPOSE To examine the CT and MR appearances of four packing materials commonly used in otolaryngologic surgery. METHODS The CT and MR appearances of bismuth and iodoform paraffin paste, aqueous betadine gauze, calcium sodium alginate, and triadocortyl cream were examined. CT attenuation values were measured using phantoms containing packing materials. MR characteristics were examined by pack...

BACKGROUND AND PURPOSE Recent studies of intracerebral hemorrhage treatments have highlighted the need to identify reliable predictors of hematoma expansion. Several studies have suggested that the spot sign on computed tomographic angiography (CTA) is a sensitive radiological predictor of hematoma expansion in the acute phase. However, the spot sign has low sensitivity for hematoma expansion. ...

INTRODUCTION To investigate retrospectively the impact of urinary stone volume on computed tomography stone attenuations measured in Hounsfield units in 253 patients with urolithiasis. MATERIAL AND METHODS CT scans were performed in 253 patients with suspected urinary stone disease from 2008 to 2010 using CT-Scanner Siemens, SOMATOM, Sensation 64. One experienced radiologist (A.L) who was bli...

The reconstruction of the acoustic properties of a neonate finless porpoise's head was performed using X-ray computed tomography (CT). The head of the deceased neonate porpoise was also segmented across the body axis and cut into slices. The averaged sound velocity and density were measured, and the Hounsfield units (HU) of the corresponding slices were obtained from computed tomography scannin...

BACKGROUND AND PURPOSE Two techniques for metal artefact reduction for computed tomography were studied in order to identify their impact on tumour delineation in radiotherapy. MATERIALS AND METHODS Using specially designed phantoms containing metal implants (dental, spine and hip) as well as patient images, we investigated the impact of two methods for metal artefact reduction on (A) the siz...