Tag Archives: cone-beam CT

Image Registration Performance and Image Quality: Ketcha’s Model Provides a Link

Intuitively, the task of registering two images (for example, aligning a preoperative CT image with an intraoperative radiograph or cone-beam CT) must depend on the quality of the images. And it stands to reason that the accuracy of registration will … Continue reading

Motion Correction for High-Resolution Cone-Beam CT: Paper by Sisniega et al.

A paper published by Dr. Alejandro Sisniega (Research Associate, Department of Biomedical Engineering) and colleagues at the I-STAR Lab describes a new method for correcting patient motion in cone-beam CT (CBCT). Because CBCT often involves scan times >10 sec (for … Continue reading

Imaging for Safer Surgery – Michael Ketcha’s Algorithm for Targeting the Deformed Spine

A recent paper by Michael Ketcha and coauthors at the I-STAR Lab reports a method for accurately targeting vertebrae in surgery under conditions of strong spinal deformation. Previous research showed a method by which target vertebrae defined in preoperative CT … Continue reading

Ultrasound + Cone-Beam CT Guidance: Paper by Eugenio Marinetto in CMIG

A paper published in the journal of Computerized Medical Imaging and Graphics (CMIG) reports the integration of C-arm cone-beam CT with a low-cost ultrasound imaging probe for needle interventions such as biopsy, tumor ablation, and pain management. The research reports … Continue reading

Task-Driven CT: Paper by Grace Gang in Phys Med Biol.

A paper published this month in the journal of Physics in Medicine and Biology reports a method that “takes imaging physics to task” to improve CT image quality and reduce dose. Grace Gang and coauthors Jeff Siewerdsen and Web Stayman … Continue reading