A feasibility study of proton beam PET/CT off-line quantitative dosimetry using polymer gels is presented. A newly developed proton-sensitive polymer gel dosimeter (BANG®3-Pro2) is used as a dosimeter and a tissue-equivalent phantom medium for this study. We explore a new approach to correlating measured proton 3-dimensional (3D) dose distributions directly to measured positron emission from in...

Many new X-Ray treatment machines using small and/or non-standard radiation fields, e.g., Tomotherapy, Cyber-knife, and linear accelerators equipped with high-resolution multi-leaf collimators on-board imaging system, have been introduced in the radiotherapy clinical routine within last few years. The introduction of these modalities has led to development high conformal techniques like Intensi...

Radiologic Procedure Rating Comments RRL* CT abdomen and pelvis without and with contrast 2 ☢ ☢ ☢ ☢ X-ray abdomen 2 ☢ ☢ CT abdomen and pelvis without contrast 2 ☢ ☢ ☢ ☢ CT abdomen and pelvis with contrast 2 ☢ ☢ ☢ ☢ X-ray contrast enema 2 ☢ ☢ ☢ X-ray cystography 2 ☢ ☢ ☢ MRI pelvis without and with contrast 2 MRI may be indicated if urethral diverticulum is suspected. O MRI pelvis without contras...

The use of CT for routine diagnostic imaging continues to grow, with modern CT equipment capable of providing an ever increasing array of features and tools to aid clinicians. One might even argue that it was the first truly digital diagnostic x-ray imaging modality because of the computational nature of producing a final set of tomographic images. Since its introduction into clinical practice ...

The purpose of this study was to show that the nominal peak tube voltage potential (kVp) and measured half-value layer (HVL) can be used to generate energy spectra and fluence profiles for characterizing a computed tomography (CT) X-ray source, and to validate the source model and an in-house kV X-ray dose computation algorithm (kVDoseCalc) for computing machine- and patient-specific CT dose. S...