Magnetic resonance angiography or digital subtraction catheter angiography for follow‐up of coiled aneurysms: Do we need both?

Lane, Annah; Vivian, Philip; Coulthard, Alan

doi:10.1111/1754-9485.12288

Cited by 11 publications

(5 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Magnetic resonance (MR) angiography is a noninvasive technique for evaluating the vascular anatomy and hemodynamics. − With the continuous development of this technology, MR angiography has developed from noncontrast blood flow imaging to three-dimensional dynamic contrast-enhanced (3D DCE) MR angiography with higher spatiotemporal resolution . In particular, when compared with digital subtraction angiography, which is considered as the gold standard for the clinical diagnosis of vascular diseases, MR angiography can not only obtain similar angiograms by performing multiplanar reconstruction of the volumetric data but also avoid the risks associated with arterial catheterization, iodinated contrast agents, and radiation hazards. , Paramagnetic contrast agents that shorten the T 1 relaxation time of blood are pivotal in achieving high-quality MR angiography with fast 3D gradient-echo sequences. , In the absence of contrast agents, these sequences cannot exhibit strong vascular contrast due to their very short repetition times …”

Section: Introductionmentioning

confidence: 99%

“…4 In particular, when compared with digital subtraction angiography, which is considered as the gold standard for the clinical diagnosis of vascular diseases, MR angiography can not only obtain similar angiograms by performing multiplanar reconstruction of the volumetric data but also avoid the risks associated with arterial catheterization, iodinated contrast agents, and radiation hazards. 5,6 Paramagnetic contrast agents that shorten the T 1 relaxation time of blood are pivotal in achieving high-quality MR angiography with fast 3D gradient-echo sequences. 7,8 In the absence of contrast agents, these sequences cannot exhibit strong vascular contrast due to their very short repetition times.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Zhu

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Enhanced angiography based on magnetic resonance imaging (MRI) has emerged as a noninvasive, robust, and high-resolution imaging technique for the clinical evaluation of vascular diseases. However, the effects of clinical Gd-chelating contrast agents are unsatisfactory for MRI contrast enhancement owing to their short blood half-life caused by rapid vascular extravasation, especially in microvessels. To address these issues, nanoprobes based on red blood cell membrane-coated ultrasmall NaGdF4 nanoparticles that exhibit much higher longitudinal molar relaxivity (r 1) than the clinically used contrast agent gadolinium diethylenetriaminepentaacetic acid have been developed. Furthermore, the appropriate hydrodynamic diameter and stealth nature aid the nanoprobes to reside longer within the blood vessels without extravasation, thereby increasing the contrast between the blood vessels and surrounding tissues. Through probe-enhanced three-dimensional (3D) dynamic contrast-enhanced MR angiography, the main arteries and veins of the mouse were readily discernible, and even tiny vessels with sub-millimeter diameters could be clearly depicted. With this level of outstanding MR angiography performance, the embolization and recanalization processes of the carotid artery can be serially monitored with high imaging resolution using only a single injection. Additionally, the results of clearance studies and the toxicity tests further highlight the safety features of the nanoprobe. To summarize, the nanoprobes used in this study exhibit less extravascular leakage and a longer blood half-life, thus successfully overcoming the defects of the conventional low-molecular-weight Gd-based contrast agents and demonstrating their potential usefulness in enhanced MR angiography.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Zhu

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…We did at least three times of follow-up cerebral angiography using digital subtraction angiography (DSA) for 3 to 4 years. Some physicians have suggested the usefulness of MRA using TOF technique or CE for follow-up [14,23]. Most physicians might have performed follow-up imaging using both techniques.…”

Section: Discussionmentioning

confidence: 99%

Long Term Outcome of In-Stent Stenosis after Stent Assisted Coil Embolization for Cerebral Aneurysm

Kim

2019

J Korean Neurosurg Soc

View full text Add to dashboard Cite

Objective The objective of this study was to evaluatelong-term radiologic prognosis and characteristics of in-stent stenosis (ISS) after stent assisted coiling (SAC) for cerebral aneurysm and analyze its risk factors. Methods Radiological records of 362 cases of SAC during 10 years were retrospectively reviewed. Patients were included in this study if they had follow-up angiogram using catheter selected angiography at least twice. All subjected were followed up from 12 months to over 30 months. Of 120 patients, 123 aneurysms were enrolled. Patient data including age, sex, aneurysm size, neck size, procedural complication, kinds of stent, ISS associated symptom, ruptured state, location of ISS, degree of ISS, radiologic prognosis of ISS, follow-up period of time, and medical comorbidities such as hypertension, diabetes mellitus (DM), dyslipidemia, and smoking were collected.Statistical comparisons of group clinical characteristics were conducted for the total population. Results Among 123 casesof aneurysm, 22 cases (17.9%) of ISS were revealed on follow-up angiography. Multiple stenting was performed in three cases and intra-procedural rupture occurred in two cases. Most cases were asymptomatic and symptomatic stenosis was identified in only one case. Sixteen cases were ruptured aneurysm. Mild stenosis was observed in 11 cases. Moderate stenosis was found in eight cases and severe stenosis was identified in three cases. Mean timing of identification of ISS was 8.90 months. The most common type was proximal type. Most cases were improved or not changed on follow-up angiography. Only one case was aggravated from mild stenosis to occlusion of parent artery. Mean follow-up period was 44.3 months. We compared risk factors and characteristic between ISS group and non-ISS group using univariate analysis. Multiple stenting was performed for three cases (13.6%) of the ISS group and four cases (4.0%) of the non-ISS group, showing no statistical difference between the two groups ( p =0.108). Additionally, the proportion of patients who had more than two risk factors among four medical risk factors (hypertension, DM, dyslipidemia, and smoking) was higher in the ISS group than that in the non-ISS group, the difference between the two was not statistically significant either (31.8% vs. 12.9%, p =0.05). Conclusion Clinical course and long-term prognosis of ISS might be benign. Most cases of ISS could be improved or not aggravated. Control of medical co-morbidity might be important. To the best of our knowledge, our study had more cases with longer follow-up period of time than other reports.

show abstract

“…[93][94][95] Specifically, when compared to digital subtraction angiography, 3D dynamic contrastenhanced (DCE) MR angiography is considered to be the gold standard for the clinical diagnosis of vascular disease. 96,97 Recently, the development of UHF-MRI systems has raised the promise of visualizing microscopic biological objectives beyond the capabilities of LF-MRI, such as microvascular systems with a diameter of 100 μm. 14 A paramagnetic nanoprobe with a shortened T 1 relaxation time is essential to achieve high-quality MR angiography with fast 3D gradientecho sequences.…”

Section: Recent Advances In Medical Diagnosis Of Uhf-mri Nanoprobesmentioning

confidence: 99%

Fabrication of magnetic nanoprobes for ultrahigh-field magnetic resonance imaging

Wang

Liang

et al. 2022

Nanoscale

View full text Add to dashboard Cite

show abstract

Magnetic resonance angiography or digital subtraction catheter angiography for follow‐up of coiled aneurysms: Do we need both?

Abstract: Of the two MRA 'misses', neither would have resulted in different management. MRA is a safe and accurate modality for follow-up of coiled aneurysms and can replace DSA.

Cited by 11 publications

References 29 publications

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Long Term Outcome of In-Stent Stenosis after Stent Assisted Coil Embolization for Cerebral Aneurysm

Fabrication of magnetic nanoprobes for ultrahigh-field magnetic resonance imaging

Contact Info

Product

Resources

About

Magnetic resonance angiography or digital subtraction catheter angiography for follow‐up of coiled aneurysms: Do we need both?

Abstract: Of the two MRA 'misses', neither would have resulted in different management. MRA is a safe and accurate modality for follow-up of coiled aneurysms and can replace DSA.

Cited by 11 publications

References 29 publications

Red Blood Cell Membrane-Coated Ultrasmall NaGdF4 Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Red Blood Cell Membrane-Coated Ultrasmall NaGdF4 Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Long Term Outcome of In-Stent Stenosis after Stent Assisted Coil Embolization for Cerebral Aneurysm

Fabrication of magnetic nanoprobes for ultrahigh-field magnetic resonance imaging

Contact Info

Product

Resources

About

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography

Red Blood Cell Membrane-Coated Ultrasmall NaGdF₄ Nanoprobes for High-Resolution 3D Magnetic Resonance Angiography