The use of high-energy proton beams enables to delivering high doses to target volumes, while sparing organs at risk compared to X-ray radiotherapy. However, the protons advantages cannot be fully exploited because the range (i.e the stopping powers) of protons in matter is not accurately known. Indeed, the proton stopping powers are obtained by an empirical conversion of X-CT Hounsfield Units ...

We show the development of a new class of highly efficient, biocompatible fiducial markers for X-ray imaging and radiosurgery, based on polymer shells encapsulating engineered gold nanoparticle (AuNP) suspensions. Our smart fabrication strategy enables wide tunability of the fiducial size, shape, and X-ray attenuation performance, up to record values >20 000 Hounsfield units (HU), i.e. comparab...

A 34-year-old man without previous medical history was brought to the Emergency Department (ED) after being involved in a motorcycle crash. He sustained trauma to the right side of the abdomen. On examination, multiple abrasions were noted in the right upper abdomen and the patient complained of severe pain. Bedside ultrasound was performed upon the patient’s arrival at the ED; it revealed a ma...

Recently, we performed a contrast-enhanced thoracic 16-channel multi-slice computed tomography (CT) with intravenous (i.v.) administration of iodixanol [Visipaque, dose 0.5 g I/kg body weight (bw)] in a 73-year old patient, suffering from multiple myeloma and chronic renal failure (calculated creatinine clearance of 23ml/min). Three days later, an unenhanced CT of the upper abdomen was performe...

BackgroundThis study investigated the levels of BMP-2, osteocalcin, and 3D CT Hounsfield units following hyperbaric oxygen therapy (HBOT) in patients with cleft lip palate (CLP) undergoing alveolar bone grafts to provide a pilot evaluation role HBOT osteogenesis.MethodsThis prospective, quasi-experimental, pre–post-intervention evaluated seven CLP receiving after single-stage reconstructions gr...

BACKGROUND Intraosseous lipomatous lesions of the sphenoid bone and skull base are increasingly seen and cause a diagnostic challenge. The purpose of this study was to present the imaging findings of 4 patients with incidentally identified intraosseous lipomatous lesions within the sphenoid bone. METHODS CT scans and MR images of 4 patients are shown. Macroscopic fat content of the lesions we...

A 14-year-old boy with syncope underwent a screening examination. There was no evidence of abnormalities on electrocardiography and echocardiography, but a roundshaped opacity with an incomplete border sign in the left lower lung field was incidentally found on the chest radiograph(arrow, Picture 1). Physical examinations and laboratory studies were normal and his past history was negative. Com...