Radiation dose and image quality of X-ray volume imaging systems: cone-beam computed tomography, digital subtraction angiography and digital fluoroscopy

Paul, Jijo; Jacobi, Volkmar; Farhang, Mohammad; Bazrafshan, Babak; Vogl, Thomas J.; Mbalisike, Emmanuel

doi:10.1007/s00330-012-2737-2

Cited by 36 publications

(33 citation statements)

References 14 publications

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“…The X-ray exposure associated to CBCT has been the subject of several studies performed on phantoms, animals, patients and the medical team [16-19]. The X-ray exposure may vary between manufacturers depending on parameters such as kVs, mAs, filter thickness and material, and number of projections.…”

Section: Techniquementioning

confidence: 99%

C-arm cone-beam computed tomography in interventional oncology: technical aspects and clinical applications

et al. 2014

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C-arm cone-beam computed tomography (CBCT) is a new imaging technology integrated in modern angiographic systems. Due to its ability to obtain cross-sectional imaging and the possibility to use dedicated planning and navigation software, it provides an informed platform for interventional oncology procedures. In this paper, we highlight the technical aspects and clinical applications of CBCT imaging and navigation in the most common loco-regional oncological treatments.

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Section: Techniquementioning

confidence: 99%

C-arm cone-beam computed tomography in interventional oncology: technical aspects and clinical applications

et al. 2014

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“…imaging (32). The number of cases of SNR increase after embolization was higher for multidetector CT and micro-CT compared with cone-beam CT. For cone-beam CT, the motorized C-arm covers a total angular range of 240° for each scan and so produces a limited angle reconstruction.…”

Section: Experimental Studies: Imaging Of Ethiodized Oil-loaded Radiomentioning

confidence: 90%

Multimodality Imaging of Ethiodized Oil–loaded Radiopaque Microspheres during Transarterial Embolization of Rabbits with VX2 Liver Tumors

Tacher¹,

Durán²,

Lin³

et al. 2016

Radiology

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equally to this work.q RSNA, 2015 Purpose:To assess the visibility of radiopaque microspheres during transarterial embolization (TAE) in the VX2 rabbit liver tumor model by using multimodality imaging, including singlesnapshot radiography, cone-beam computed tomography (CT), multidetector CT, and micro-CT. Materials and Methods:The study was approved by the institutional animal care and use committee. Fifteen VX2-tumor-bearing rabbits were assigned to three groups depending on the type of embolic agent injected: 70-150-mm radiopaque microspheres in saline (radiopaque microsphere group), 70-150-mm radiopaque microspheres in contrast material (radiopaque microsphere plus contrast material group), and 70-150-mm radiolucent microspheres in contrast material (nonradiopaque microsphere plus contrast material group). Rabbits were imaged with singlesnapshot radiography, cone-beam CT, and multidetector CT. Three to 5 weeks after sacrifice, excised livers were imaged with micro-CT and histologic analysis was performed. The visibility of the embolic agent was assessed with all modalities before and after embolization by using a qualitative three-point scale score reading study and a quantitative assessment of the signal-to-noise ratio (SNR) change in various regions of interest, including the tumor and its feeding arteries. The Kruskal-Wallis test was used to compare the rabbit characteristics across groups, and the Wilcoxon signed rank test was used to compare SNR measurements before and after embolization. Results:Radiopaque microspheres were qualitatively visualized within tumor feeding arteries and targeted tissue with all imaging modalities (P , .05), and their presence was confirmed with histologic examination. SNRs of radiopaque microsphere deposition increased after TAE on multidetector CT, cone-beam CT, and micro-CT images (P , .05). Similar results were obtained when contrast material was added to radiopaque microspheres, except for additional image attenuation due to tumor enhancement. For the group with nonradiopaque microspheres and contrast material, retained tumoral contrast remained qualitatively visible with all modalities except for micro-CT, which demonstrated soluble contrast material washout over time. Conclusion:Radiopaque microspheres were visible with all imaging modalities and helped increase conspicuity of the tumor as well as its feeding arteries after TAE in a rabbit VX2 liver tumor model.q RSNA, 2015

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“…Reconstructed 3D image data may be necessary to locate tumours and also confirm the inserted intraarterial catheter tip during interventional procedures [4][5][6]. Furthermore, it raises the confidence of the procedural personnel.…”

Section: Introductionmentioning

confidence: 98%

“…Previous publications assessed the feasibility and image quality of CBCT examination during different oncological procedures [5,[9][10][11]; furthermore, those studies concluded that CBCT imaging is feasible and could provide reasonable image quality during real-time patient examinations. Technological advancements of the single-phase CBCT provides good image quality compared with its previous generations [5]; furthermore, dualphase (two-sequential image data acquisition) CBCT imaging is more useful and reliable than single-phase imaging for detecting hepatic tumours while providing sufficient image quality [12,13].…”

Section: Introductionmentioning

confidence: 98%

Ultrafast cone-beam computed tomography imaging and postprocessing data during image-guided therapeutic practice

Paul

Mbalisike²,

Vogl

2014

Eur Radiol

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Radiation dose and image quality of X-ray volume imaging systems: cone-beam computed tomography, digital subtraction angiography and digital fluoroscopy

Cited by 36 publications

References 14 publications

C-arm cone-beam computed tomography in interventional oncology: technical aspects and clinical applications

C-arm cone-beam computed tomography in interventional oncology: technical aspects and clinical applications

Multimodality Imaging of Ethiodized Oil–loaded Radiopaque Microspheres during Transarterial Embolization of Rabbits with VX2 Liver Tumors

Ultrafast cone-beam computed tomography imaging and postprocessing data during image-guided therapeutic practice

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