Purpose: Our aim was to develop a high-quality, mobile cone-beam computed tomography (CBCT) scanner for point-of-care detection and monitoring of low-contrast, soft-tissue abnormalities in the head/brain, such as acute intracranial hemorrhage (ICH). This work presents an integrated framework of hardware and algorithmic advances for improving ...

2024年11月16日 · Cone beam computed tomography (CBCT) has potential advantages for developing portable, cost-effective point-of-care CT systems for intracranial imaging, such as...

Results: The dual-axis trajectory produces CBCT images with significantly fewer image artifacts than the traditional circular scan (whole brain average artifact score, AS: 0.20 vs 0.33), with the greatest improvement in bone beam hardening (AS: 0.13 vs …

2023年3月1日 · Our results suggested that, compared to conventional CBCT, the novel dual-axis butterfly CBCT showed supratentorial and infratentorial artifact reduction, improved contrast with the brain parenchyma and cerebrospinal fluid space, and improved gray matter/white matter discrimination ability.

1 天前 · This study collected CT and CBCT images from 105 patients with brain tumors and 108 patients with head and neck (H&N) cancers who underwent radiotherapy at the Fourth Affiliated Hospital of ...

Cone-beam computed tomography (CBCT) imaging of the brain can be performed in the angiography suite to support various neurovascular procedures. Relying on CBCT brain imaging solely, however, still lacks full diagnostic confidence due to the inferior image quality compared with CT and various imaging artifacts that persist even with modern CBCT.

The aim of this review is to describe the principles, acquisition and reformatting of state of the art high resolution CBCT (HR-CBCT) angiography and demonstrate its role in multiple neurovascular conditions as a tool to improve the understanding of the angio-architecture of disease and guide therapeutic decisions.

2022年1月19日 · HR 3D CBCT scans before brain stereotaxy treatments greatly help to verify the patient’s position, accurately adjust the target volume mm for high-dose radiation treatments. The optimal bone-soft tissue contrast and image quality of diagnostic image verification in the kV range allows for more accurate and safer positioning.

Conebeam CT (CBCT) is an advancement in CT imaging that has begun to emerge as a potentially low-dose cross-sectional technique for visualizing bony structures in the head and neck. The physical principles, image quality parameters, and technical limitations relevant to CBCT imaging were discussed in Part 1 of this 2-part series.

2024年2月14日 · In linear accelerator-based stereotactic irradiation (STI) for brain metastasis, cone-beam computed tomography (CBCT) image quality is essential for ensuring precise patient setup and tumor localization. However, CBCT images may be degraded by the deviation of the CBCT isocenter from the brain center.