Results 241 to 250 of about 136,446 (321)

Megavoltage intrafraction monitoring and position uncertainty in gimbaled markerless dynamic tumor tracking treatment of lung tumors

open access: yesMedical Physics, EarlyView.
Abstract Background The clinical realization of markerless dynamic tumor tracking (MLDTT) has prompted a new paradigm shift to intrafraction imaging‐based quality assurance (QA). During MLDTT treatment using a gimbaled accelerator, the megavoltage (MV) imager serves as an independent system to leverage real‐time intrafraction monitoring.
Marco Serpa   +4 more
wiley   +1 more source

Optical surface information‐based respiratory phase‐sorting and motion‐incorporated reconstruction for SPECT imaging

open access: yesMedical Physics, EarlyView.
Abstract Background Respiratory motion during the single photon emission computed tomography (SPECT) acquisition can cause blurring artifacts in the reconstructed images, leading to inaccurate estimates for activity and absorbed doses. Purpose To address the impact of respiratory motion, we utilized a new optical surface imaging (OSI) system to extract
Chenguang Li   +5 more
wiley   +1 more source

Deep learning‐based estimation of respiration‐induced deformation from surface motion: A proof‐of‐concept study on 4D thoracic image synthesis

open access: yesMedical Physics, EarlyView.
Abstract Background Four‐dimension computed tomography (4D‐CT) provides important respiration‐related information for thoracic radiotherapy. Its quality is challenged by various respiratory patterns. Its acquisition gives rise to the risk of higher radiation exposure.
Jie Zhang, Xue Bai, Guoping Shan
wiley   +1 more source

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