Image-guided radiation therapy represents a new paradigm in the field of high-precision
radiation medicine. A synthesis of recent technological advances in medical imaging and …

During a course of fractionated radiation therapy and between the fractions the tissues of the
human body may move relative to some reference location in which the radiation therapy …

From background physics and biological models to the latest imaging and treatment
modalities, the Handbook of Radiotherapy Physics: Theory and Practice covers all …

The ExacTrac X-Ray 6D image-guided radiotherapy (IGRT) system will be described and its
performance evaluated. The system is mainly an integration of 2 subsystems:(1) an infrared …

Purpose: Respiratory gating is a commercially available technology for reducing the
deleterious effects of motion during imaging and treatment. The efficacy of gating is …

Image quality of CT scans suffers when objects undergo motion. Respiratory motion causes
artifacts, which prevents adequate visualization of anatomy. Four‐dimensional CT (4D‐CT) …

Accurate modeling of the respiratory cycle is important to account for the effect of organ
motion on dose calculation for lung cancer patients. The aim of this study is to evaluate the …

The signal from a spirometer is directly correlated with respiratory motion and is ideal for
target respiratory motion tracking. However, its susceptibility to signal drift deters its …

To evaluate our initial experience with image guided respiratory gated H-SBRT for liver and
lung tumors. The system combines a stereoscopic x-ray imaging system (ExacTrac® X-Ray …

The clinical use of respiratory-gated radiotherapy and the application of intensity-modulated
radiotherapy (IMRT) are 2 relatively new innovations to the treatment of lung cancer …