Noninvasive Evaluation of Cerebral Arteriovenous Malformations by 4D-MRA for Preoperative Planning and Postoperative Follow-Up in 56 Patients: Comparison with DSA and Intraoperative Findings

Hadizadeh, Dariusch R.; Kukuk, G; Steck, Dominik T.; Gieseke, Jürgen; Urbach, Horst; Tschampa, Henriette J.; Greschus, Susanne; Kovács, Attila; Möhlenbruch, Markus; Bostroem, Azize; Schild, Hans H.; Willinek, Winfried A.

doi:10.3174/ajnr.a2921

Cited by 44 publications

(30 citation statements)

References 39 publications

(39 reference statements)

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“…In addition, temporal and spatial resolution can be further improved up to an acceleration factor of 60 by optimizing the use of intelligent k-space sampling techniques (ie, CENTRA, parallel imaging, and partial Fourier imaging), whereas our examinations had an acceleration factor of 40, equivalent to other recent publications. 17,[19][20][21]28,31 Second, the interobserver agreement for DSA was not as high as expected compared with 4D-MRA, though it was very good ( 0.84, 95% CI .69 -.98 and 0.82, 95% CI .67-.98, respectively) for the reasons explained above.…”

Section: Residual Nidusmentioning

confidence: 96%

“…Hadizadeh et al 21 recently concluded an excellent correlation between 4D-MRA and DSA regarding pre-and postoperative evaluation of bAVM, suggesting that 4D-MRA could be substituted for DSA in these 2 indications. However, in this series, of the 25 patients who had been followed-up after treatment, only 1 patient presented residual venous drainage.…”

Section: Residual Nidusmentioning

confidence: 99%

“…[17][18][19][20] The value of 4D-MRA for the follow-up of patients with a treated bAVM has been rarely evaluated. 21,22 The purpose of this study was to evaluate the performance of 4D-MRA at 3T for the follow-up of patients with a treated bAVM. In other words, this study will try to answer the 2 following questions: is 4D-MRA enough to assert the cure?…”

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confidence: 99%

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Value of 4D MR Angiography at 3T Compared with DSA for the Follow-Up of Treated Brain Arteriovenous Malformation

Soize

Bouquigny

Kadziolka

et al. 2014

AJNR Am J Neuroradiol

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Section: Residual Nidusmentioning

confidence: 96%

Section: Residual Nidusmentioning

confidence: 99%

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Value of 4D MR Angiography at 3T Compared with DSA for the Follow-Up of Treated Brain Arteriovenous Malformation

Soize

Bouquigny

Kadziolka

et al. 2014

AJNR Am J Neuroradiol

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“…Furthermore, low temporal resolution can also make delineation of small arterial feeders and venous drainage difficult with these techniques. 3–9 …”

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confidence: 99%

Fast Contrast-Enhanced 4D MRA and 4D Flow MRI Using Constrained Reconstruction (HYPRFlow): Potential Applications for Brain Arteriovenous Malformations

Chang¹,

Wu²,

Johnson³

et al. 2015

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE: HYPRFlow is a novel imaging strategy that provides fast, high-resolution contrast-enhanced time-resolved images and measurement of the velocity of the entire cerebrovascular system. Our hypothesis was that the images obtained with this strategy are of adequate diagnostic image quality to delineate the major components of AVMs. MATERIALS AND METHODS: HYPRFlow and 3D TOF scans were obtained in 21 patients with AVMs with correlative DSA examinations in 14 patients. The examinations were scored for image quality and graded by using the Spetzler-Martin criteria. Mean arterial transit time and overlap integrals were calculated from the dynamic image data. Volume flow rates in normal arteries and AVM feeding arteries were measured from the phase contrast data. RESULTS: HYPRFlow was equivalent to 3D-TOF in delineating normal arterial anatomy, arterial feeders, and nidus size and was concordant with DSA for AVM grading and venous drainage in 13 of the 14 examinations. Mean arterial transit time on the AVM side was 0.49 seconds, and on the normal contralateral side, 2.53 seconds with P < .001. Across all 21 subjects, the mean arterial volume flow rate in the M1 segment ipsilateral to the AVM was 4.07 ± 3.04 mL/s; on the contralateral M1 segment, it was 2.09 ± 0.64 mL/s. The mean volume flow rate in the largest feeding artery to the AVM was 3.86 ± 2.74 mL/s. CONCLUSIONS: HYPRFlow provides an alternative approach to the MRA evaluation of AVMs, with the advantages of increased coverage, 0.75-second temporal resolution, 0.68-mm isotropic spatial resolution, and quantitative measurement of flow in 6 minutes.

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“…This results in deviations, albeit minor, in image contrast ("flickering"). Taking these limitations into account, a temporal resolution of 572 ms at a simultaneous spatial resolution of (1.1 × 1.1 × 1.1) mm³ was achieved when 4D-TRAK+ was used for examining cAVM, for example, while imaging all cranial blood vessels [41].…”

mentioning

confidence: 99%

High temporal and high spatial resolution MR angiography (4D-MRA)

Hadizadeh¹,

Marx²,

Gieseke³

et al. 2014

Fortschr Röntgenstr

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!In the first decade of the twenty-first century, whole-body magnetic resonance scanners with high field strengths (and thus potentially better signal-to-noise ratios) were developed. At the same time, parallel imaging and "echo-sharing" techniques were refined to allow for increasingly high spatial and temporal resolution in dynamic magnetic resonance angiography ("time-resolved" = TR-MRA). This technological progress facilitated tracking the passage of intra-venously administered contrast agent boluses as well as the acquisition of volume data sets at high image refresh rates ("4D-MRA"). This opened doors for many new applications in non-invasive vascular imaging, including simultaneous anatomic and functional analysis of many vascular pathologies including arterio-venous malformations. Different methods were established to acquire 4D-MRA using various strategies to acquire k-space trajectories over time in order to optimize imaging according to clinical needs. These include "keyhole"-based techniques (e. g. 4D-TRAK), TRICKS -both with and without projection -and HYPR-reconstruction, TREAT, and TWIST. Some of these techniques were first introduced in the 1980 s and 1990 s, were later enhanced and modified, and finally implemented in the products of major vendors. In the last decade, a large number of studies on the clinical applications of TR-MRA was published. This manuscript provides an overview of the development of TR-MRA methods and the 4D-MRA techniques as they are currently used in the diagnosis, treatment and follow-up of vascular diseases in various parts of the body. Key statements▶ 4D-MRA, which differs according to manufacturer, generates high temporal and spatial resolution MRA volume data sets.

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Noninvasive Evaluation of Cerebral Arteriovenous Malformations by 4D-MRA for Preoperative Planning and Postoperative Follow-Up in 56 Patients: Comparison with DSA and Intraoperative Findings

Cited by 44 publications

References 39 publications

Value of 4D MR Angiography at 3T Compared with DSA for the Follow-Up of Treated Brain Arteriovenous Malformation

Value of 4D MR Angiography at 3T Compared with DSA for the Follow-Up of Treated Brain Arteriovenous Malformation

Fast Contrast-Enhanced 4D MRA and 4D Flow MRI Using Constrained Reconstruction (HYPRFlow): Potential Applications for Brain Arteriovenous Malformations

High temporal and high spatial resolution MR angiography (4D-MRA)

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