Purpose Modern CT scanners use automatic exposure control (AEC) techniques, such as
tube current modulation (TCM), to reduce dose delivered to patients while maintaining …

Background A tomographic patient model is essential for radiation dose modulation in x‐ray
computed tomography (CT). Currently, two‐view scout images (also known as topograms) …

Purpose We present a new concept for dynamic fluence field modulation (FFM) in x‐ray
computed tomography (CT). The so‐called z‐aligned sheet‐based dynamic beam …

Purpose Fluence‐modulated proton computed tomography (FMpCT) using pencil beam
scanning aims at achieving task‐specific image noise distributions by modulating the …

Computed tomography (CT) is an extensively used imaging modality capable of generating
detailed images of a patient's internal anatomy for diagnostic and interventional procedures …

Purpose Modulation of the x‐ray source in computed tomography (CT) by a designated filter
to achieve a desired distribution of photon flux has been greatly advanced in recent years. In …

Purpose Interest in spectral computed tomography (CT) for diagnostics and therapy
evaluation has been growing. Data acquisitions with distinct spectral sensitivities provide the …

With major advances in x-ray source and detector technology during past decades, CT
exams can be performed with much improved volume coverage speed, spatial resolution …

Interest in spectral CT for diagnostics and therapy evaluation has been growing.
Acquisitions of data from distinct energy spectra provide, among other advantages …

In this work we describe a new dynamic X-ray collimator that may be used to collect sparse
computed tomography projection data. Data sparsity may be user-specified and controlled …