Radiotherapy (RT) aims to deliver a spatially conformal dose of radiation to tumours while
maximizing the dose sparing to healthy tissues. However, the internal patient anatomy is …

In this review article, we discuss various technical aspects of image-guided respiration-
gated radiation therapy. We first review some basic concepts related to respiratory gating …

Precise tracking of lung tumor motion during treatment delivery still represents a challenge
in radiation therapy. Prototypes of MRI–linac hybrid systems are being created which have …

Movement degrades image quality in PET/CT. The first step in correcting for movement is to
gate the data into different motion states. The gating is usually based on information from …

In this overview, we discuss some major issues related to the management of mobile tumors
and gating in radiotherapy. For most types of organ motion, there are both interfraction and …

Respiration-gated radiotherapy offers a significant potential for improvement in the
irradiation of tumour sites affected by respiratory motion such as lung, breast and liver …

Purpose: Accurate tumor tracking remains a challenge in current radiation therapy. Many
strategies including image guided radiation therapy alleviate the problem to certain extents …

Lung tumor motion due to respiration poses a challenge in the application of modern three-
dimensional conformal radiotherapy. Direct tracking of the lung tumor during radiation …

Respiratory‐gated radiotherapy offers a significant potential for improvement in the
irradiation of tumor sites affected by respiratory motion such as lung, breast, and liver …

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 …