Quantitative reconstruction of cone beam X-ray computed tomography (CT) datasets
requires accurate modeling of scatter, beam-hardening, beam profile, and detector response. …

Megavoltage cone beam computed tomography (MVCBCT) is routinely used for visualizing
anatomical structures and implanted fiducials for patient positioning in radiotherapy. …

We describe a focused beam‐stop array (BSA) for the measurement of object scatter in
imaging systems that utilize x‐ray beams in the megavoltage (MV) energy range. The BSA …

Purpose: To use an imaging beam line (IBL) to obtain the first megavoltage cone‐beam
computed tomography (MV CBCT) images of patients with a low atomic number target, and to …

To measure and compare the contrast to noise ratio (CNR) as a function of dose for the
CBCTs produced by the mega‐voltage (MV) imaging beam line (IBL) and the treatment beam …

Purpose: To quantify the improvement in megavoltage cone beam computed tomography (MVCBCT)
image quality enabled by the combination of a 4.2 MV imaging beam line (IBL) with …

The accurate delivery of external beam radiation therapy is often facilitated through the
implantation of radio‐opaque fiducial markers (gold seeds). Before the delivery of each treatment …

されている (Fig. 4). 寸法は入射面 (ビームが入射する面) では直径 0.8 cm, 射出面 (ビームが射出
する面) では直径 1.26 cm, 厚さは 1.32 cm である. 低エネルギーの漏洩電子線は, このカーボン…

The subject Best Approximation Theory in normed spaces has attracted the attention of
several mathematicians since its introduction in 1920’s by one of the founders of Functional …

Imaging dose from megavoltage cone beam computed tomography (MVCBCT) can be
significantly reduced without loss of image quality by using an imaging beam line (IBL), with no …