Contrast-enhanced angiographic cone-beam computed tomography without pre-diluted contrast medium

Jo, Kwang Wook; Kim, S. R.; Choi, Joon Hyouk; Kim, K. H.; Jeon, Pyoung

doi:10.1007/s00234-015-1570-0

Cited by 5 publications

(10 citation statements)

References 12 publications

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“…IACBCT imaging modality provides details not only about the implanted device but also about the microvascular anatomy contributing to the decision making during these procedures [3,7,8]. Despite the multiple radiological advantages of the IACBCT, motion artifact even from subtle movements can significantly degrade the processed images; however, this was not a problem in our series since the images were acquired immediately after deployment, and therefore all patients were already under general procedure [3].…”

Section: Discussionmentioning

confidence: 88%

“…A 14% dilution formula has been proposed for evaluation of stent-assisted coil embolization with CBCT [11]. One report recommends the use of 0.2 cm 3 /s contrast infusion rate and saline flush with a 300 mm Hg pressure bag rather than a dilution formula within the power injector [7]. In this study, the CBCT contrast protocol included a 10-20% dilution resulting in good imaging quality of the parameters evaluated.…”

Section: Discussionmentioning

confidence: 99%

“…Another advantage of this technique is the lower contrast agent dose [3]. IACBCT imaging modality is frequently obtained with a 10-20% diluted contrast [5,7]. A 14% dilution formula has been proposed for evaluation of stent-assisted coil embolization with CBCT [11].…”

Section: Discussionmentioning

confidence: 99%

“…Initially used as a CT scan for evaluation of intraprocedural complications such as hemorrhage, it has evolved to provide details of implanted devices such as flow diverters. This imaging modality has been used to provide meaningful radiological information with regard to the neurovascular anatomy and morphology as well as implanted devices [1,4,7].…”

Section: Introductionmentioning

confidence: 99%

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Usefulness of Cone Beam Intra-Arterial CTA for Evaluation of Flow Diverters: A Practical Approach for Daily Use

Reyes¹,

Becerra²,

Alcala³

et al. 2018

Intervent Neurol

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Cone beam computed tomography (CBCT), initially used for evaluation of intraprocedural complications such as hemorrhage, has evolved to provide details of implanted devices such as flow diverters. The study aim is to present our experience in using CBCT with intra-arterial injection and provide a step-by-step approach for postprocessing in a practical protocol for daily use. IRB approval was obtained, and the neurointerventional database was retrospectively reviewed from July 2012 to June 2017. Patients who underwent cone beam intra-arterial CT angiography for evaluation of implanted flow diverter devices were reviewed. Patient demographics, aneurysm location (internal carotid artery [ICA]-cavernous, ICA-paraclinoid, and ICA-distal; middle cerebral artery [MCA], anterior cerebral artery [ACA]-acom, ACA-pericallosal, vertebral artery [VA]), type (saccular, dissecting fusiform, or blister) and size, device, injection technique (contrast dilution, rate, and volume), and reconstruction protocol were recorded. Acquired images were postprocessed using a Philips Xtravision workstation. Eighty patients (63 women and 17 men) met the inclusion criteria of our study. Age range was 25–80 years old. Treated aneurysms were located in the ICA-paraclinoid in 48 cases (60%), ICA-distal in 12 cases, ICA-cavernous in 8 cases, MCA in 4 cases, VA in 4 cases, ACA-acom in 2 cases, ACA-pericallosal in 2 cases; 69 were saccular, 8 fusiform, and 3 ruptured blister aneurysms. There were 52 small, 20 large, and 8 giant aneurysms. Pipeline (Medtronic, MN, USA) was the predominant device used in 77 procedures. Two injection techniques were used: 2.5 mL/s for a total volume of 55 mL with a 2-s imaging delay or 3 mL/s for a total volume of 70 mL with a 3-s imaging delay; contrast (Ioxilan 300 mgI/mL) dilution was 10–20% in all cases. The device’s landing zones, conformability, presence of deformities, and wall apposition were successfully visualized in all cases. Metal artifact reduction program was applied in 9 coiled aneurysms, and this was satisfactory as well.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Usefulness of Cone Beam Intra-Arterial CTA for Evaluation of Flow Diverters: A Practical Approach for Daily Use

Reyes¹,

Becerra²,

Alcala³

et al. 2018

Intervent Neurol

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“…For easy intraoperative determination of the TAMV, measurement immediately before 3D-RA using a portable echograph is considered useful. Jo et al 9) reported a method to dilute the contrast medium according to the blood flow of the internal carotid artery based on the measurement using transcranial Doppler (TCD). Since this technique is designed for the internal carotid artery distal to the catheter, it cannot be used for visualization of the common carotid artery.…”

Section: Discussionmentioning

confidence: 99%

Fundamental Study on the Evaluation of the Vascular Lumen after Carotid Artery Stenting Using 3D-rotational Angiography with Diluted Contrast Medium

Yoda

Hamada

Kawauchi

et al. 2018

JNET

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Objective: Due to the recent increase in the availability of cone-beam CT (CBCT), delineation of blood vessels and intracranial stents using CBCT has been well-reported, but reports using 3D-rotational angiography (3D-RA) have been few. We evaluated delineation of carotid artery stents using 3D-RA with diluted contrast medium. Methods:We prepared simulated blood vessel phantoms covered by carotid artery stents different in material and shape. The phantoms were encapsulated with different concentration of contrast medium, and scanned using 3D-RA.The appropriate concentration of contrast medium was evaluated. Results:The appropriate concentrations of diluted contrast medium were 50-17% for the Carotid Wall Stent (Boston Scientific, Natick, MA, USA) and 20%-10% for PRECISE (Johnson & Johnson, Miami, FL, USA) and PROTÉGÉ (Covidien, Irvine, CA, USA). Conclusion:The appropriate concentration of contrast medium varied with carotid artery stent. By selecting an appropriate degree of dilution, the stent shape, plaque, intimal thickening, and vascular lumen in the stent can be visualized. Therefore, it is possible to evaluate vascular lumen after carotid artery stenting.

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CT and MR Angiography of the Brain and Carotid Arteries

Samancı

2021

Medical Imaging Contrast Agents: A Clinical Manual

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Contrast-enhanced angiographic cone-beam computed tomography without pre-diluted contrast medium

Abstract: Contrast-enhanced CBCT can be performed without quantitative contrast dilution. Adequate contrast dilution can be achieved with a small saline flush and normal blood flow.

Cited by 5 publications

References 12 publications

Usefulness of Cone Beam Intra-Arterial CTA for Evaluation of Flow Diverters: A Practical Approach for Daily Use

Usefulness of Cone Beam Intra-Arterial CTA for Evaluation of Flow Diverters: A Practical Approach for Daily Use

Fundamental Study on the Evaluation of the Vascular Lumen after Carotid Artery Stenting Using 3D-rotational Angiography with Diluted Contrast Medium

CT and MR Angiography of the Brain and Carotid Arteries

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