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Mishra D, Kannath SK, Er J, Thomas B, Kesavadas C. Evaluating the diagnostic performance of non-contrast magnetic resonance angiography sequences in the pre-procedural comprehensive analysis of direct carotid cavernous fistula. Neuroradiology 2024; 66:1203-1212. [PMID: 38581636 DOI: 10.1007/s00234-024-03342-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/19/2024] [Indexed: 04/08/2024]
Abstract
PURPOSE Endovascular treatment of direct carotid cavernous fistula (DCCF) requires invasive diagnostic cerebral angiography for diagnosis and planning; however, a less invasive modality like magnetic resonance angiography (MRA) can be useful, especially in high-risk cases. This single-centre study evaluated a newer MR angiography (MRA) sequence, silent MRA and the traditional time of flight (TOF) MRA for pre-procedural treatment planning of DCCF. METHODS All consecutive DCCF patients who underwent TOF, silent MRA and diagnostic cerebral angiography were included in the study. Angiographic features like rent size, location, draining veins and collateral communicating arteries were analysed and compared between the two MRA sequences, with digital subtraction angiography (DSA) as the gold standard. RESULTS Fifteen patients were included in the study. TOF MRA exhibited better sensitivity (76.9% vs 69.2%) in identifying the rent location, correctly pinpointing the location in 93.3% compared to 73.3% with silent MRA. Both MRA sequences showed good agreement with DSA for primary sac and rent size. TOF MRA correctly identified 86.2% of 210 total venous structures compared to 96% by silent MRA. Silent MRA demonstrated higher sensitivity (90% vs 76%) and accuracy (87.69 vs 94.36) in visualisation of involved veins compared to TOF MRA. CONCLUSION Arterial characteristics of DCCF like rent location and rent size were better assessed by TOF MRA. Although both MRA identified venous features, silent MRA correlated better with DSA irrespective of the size and proximity to the site of the fistula. Combining both sequences can evaluate various angioarchitectural features of DCCF useful for therapeutic planning.
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Affiliation(s)
- Dewansh Mishra
- Imaging Sciences and Interventional Radiology, Sree Chitra Thirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
| | - Santhosh Kumar Kannath
- Imaging Sciences and Interventional Radiology, Sree Chitra Thirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India.
| | - Jayadevan Er
- Imaging Sciences and Interventional Radiology, Sree Chitra Thirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
| | - Bejoy Thomas
- Imaging Sciences and Interventional Radiology, Sree Chitra Thirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
| | - C Kesavadas
- Imaging Sciences and Interventional Radiology, Sree Chitra Thirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
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Prasad Balasubramanian A, Kumar Kannath S, Thomas B, Enakshy Rajan J, Kesavadas C. Comparative study of non-contrast silent and time-of-flight magnetic resonance angiographic sequences in the evaluation of intracranial dural arteriovenous fistula. Clin Radiol 2024; 79:e393-e400. [PMID: 38182477 DOI: 10.1016/j.crad.2023.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 06/02/2023] [Accepted: 11/21/2023] [Indexed: 01/07/2024]
Abstract
AIM To compare the performance of two non-contrast magnetic resonance angiography (MRA) sequences, silent MRA and time of flight (TOF) MRA, in the evaluation of intracranial dural arteriovenous fistula (DAVF). MATERIALS AND METHODS Forty consecutive patients with DAVF were enrolled and evaluated prospectively using silent MRA, TOF MRA, and digital subtraction angiography (DSA). The location, Cognard classification, arterial feeders, and venous drainage were evaluated. The therapeutic strategy and possible route were predicted on both silent and TOF MRA and these were compared with DSA during subsequent endovascular treatment. RESULTS Sensitivity and accuracy of silent and TOF MRA for localisation (96.4% versus 96% and 96% versus 95%, respectively) and classification (96% versus 94% and 96% versus 93.5%, respectively) were high. Silent MRA showed higher sensitivity than TOF MRA for arterial feeders and draining veins (87% versus 79% and 81.6% versus 67%). This improved to a sensitivity of 96.4% and 89% when prominent feeders were considered. The sensitivity and accuracy were 92.6% and 85.8% for immediate draining veins. Both silent and TOF MRA were accurate for therapeutic planning (96% versus 85%), although silent MRA was more accurate. CONCLUSION Silent MRA can more reliably evaluate the various angioarchtectural components of DAVF compared to TOF MRA.
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Affiliation(s)
- A Prasad Balasubramanian
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - S Kumar Kannath
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India.
| | - B Thomas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - J Enakshy Rajan
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - C Kesavadas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
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Samp PF, Keil F, du Mesnil R, Birkhold A, Kowarschik M, Hattingen E, Berkefeld J. 4D-DSA for Assessment of the Angioarchitecture and Grading of Cranial Dural AVF. AJNR Am J Neuroradiol 2023; 44:1291-1295. [PMID: 37827722 PMCID: PMC10631524 DOI: 10.3174/ajnr.a8008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/30/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND AND PURPOSE Time-resolved 3D rotational angiography (4D-DSA) has been used to demonstrate details of the angioarchitecture of AVM, whereas it has rarely been used to describe features of dural AVF. In this exploratory study, we analyzed dural AVFs with a novel 4D software prototype, developed and provided by Siemens, to determine whether identification of the location of the fistulous point, grading, and treatment planning were feasible. MATERIALS AND METHODS 4D-DSA volumes were calculated from existing 3D rotational angiography data sets of patients with dural AVFs. The 4D-DSA volumes were displayed in a virtual DSA mode and MPR or MIP in 3 orthogonal planes and compared with 2D-DSA by 2 experienced neuroradiologists. Fusions with unenhanced CT or MR images were used to improve visualization of adjacent anatomic structures. RESULTS Comparison with 2D-DSA showed that evaluation of the fistulous point and grading according to the classification of Borden, Cognard, or Barrow was feasible in 26 of 27 cases. In 8 of 27 cases, 4D-DSA was considered advantageous for determining the fistulous point and the course of the draining vein in the dural AVF with cortical venous drainage, especially in the frontoethmoidal and frontoparietal regions. In 6 cases, the display of angioarchitecture was considered inferior to that of 2D-DSA due to motion artifacts, suboptimal selection of the injected vessel, and lack of temporal resolution. CONCLUSIONS Detailed analysis of dural AVFs according to the standardized display of 4D-DSA volumes was feasible and helpful in understanding the angioarchitecture in selected cases. Further improvement and validation of the 4D software should solidify the complementary role of 4D-DSA to conventional 2D-DSA series.
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Affiliation(s)
- P F Samp
- From the Institute of Neuroradiology (P.F.S., F.K., R.d.M., E.H., J.B.), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - F Keil
- From the Institute of Neuroradiology (P.F.S., F.K., R.d.M., E.H., J.B.), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - R du Mesnil
- From the Institute of Neuroradiology (P.F.S., F.K., R.d.M., E.H., J.B.), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - A Birkhold
- Siemens Healthcare (A.B., M.K.), Forchheim, Germany
| | - M Kowarschik
- Siemens Healthcare (A.B., M.K.), Forchheim, Germany
| | - E Hattingen
- From the Institute of Neuroradiology (P.F.S., F.K., R.d.M., E.H., J.B.), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - J Berkefeld
- From the Institute of Neuroradiology (P.F.S., F.K., R.d.M., E.H., J.B.), University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt am Main, Germany
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Kandasamy S, Kannath SK, Enakshy Rajana J, Kesavadas C, Thomas B. Non-invasive angiographic analysis of dural carotid cavernous fistula using time-of-flight MR angiography and silent MR angiography: a comparative study. Acta Radiol 2023; 64:1290-1297. [PMID: 35532027 DOI: 10.1177/02841851221097462] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND A non-invasive, reliable imaging modality that characterizes cavernous sinus dural arteriovenous fistula (CSDAVF) is beneficial for diagnosis and to assess resolution on follow-up. PURPOSE To assess the utility of 3D time-of-flight (TOF) and silent magnetic resonance angiography (MRA) for evaluation of CSDAVF from an endovascular perspective. MATERIAL AND METHODS This prospective study included 37 patients with CSDAVF, who were subjected to digital subtraction angiography (DSA) and 3-T MR imaging with 3D TOF and silent MRA. The main arterial feeders, fistula site, and venous drainage pattern were evaluated, and the results were compared with DSA findings. The diagnostic confidence scores were also recorded using a 4-point Likert scale. RESULTS Silent MRA correlated better for shunt site localization and angiographic classification (86% vs. 75% and 83% vs. 75%, respectively) compared to TOF MRA. The proportion of arterial feeders detected was marginally significant for silent MRA over TOF MRA sequences (92.8% vs. 89.5%; P=0.048), though for veins both were comparable. Sensitivity of silent MRA was higher for identification of cortical venous reflux (CVR) (90.9% vs. 81.8%) and deep venous drainage (82.4% vs. 64.7%), while specificity was >90% for both modalities. The overall diagnostic confidence score fared better for silent MRA for venous assessment (P < 0.001) as well as fistula point identification (P < 0.001), while no significant difference was evident with TOF MRA for arterial feeders (P=0.06). CONCLUSION Various angiographic components of CSDAVF could be identified and delineated by 3D TOF and silent MRA, though silent MRA was superior for overall diagnostic assessment.
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Affiliation(s)
- Sathish Kandasamy
- Department of Imaging Sciences and Interventional Radiology, 29354Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum, Kerala, India
- Department of Interventional Radiology, 29904G Kuppusamy Naidu, Memorial Hospital, Coimbatore, Tamil nadu, India
| | - Santhosh Kumar Kannath
- Department of Imaging Sciences and Interventional Radiology, 29354Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum, Kerala, India
| | - Jayadevan Enakshy Rajana
- Department of Imaging Sciences and Interventional Radiology, 29354Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum, Kerala, India
| | - Chandrasekaran Kesavadas
- Department of Imaging Sciences and Interventional Radiology, 29354Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum, Kerala, India
| | - Bejoy Thomas
- Department of Imaging Sciences and Interventional Radiology, 29354Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum, Kerala, India
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HANYU T, NISHIHORI M, IZUMI T, MOTOMURA K, OHKA F, GOTO S, ARAKI Y, YOKOYAMA K, UDA K, SAITO R. Dural Arteriovenous Fistula Mimicking a Brain Tumor on Methionine-positron Emission Tomography: A Case Report. NMC Case Rep J 2022; 9:289-294. [PMID: 36263190 PMCID: PMC9534565 DOI: 10.2176/jns-nmc.2022-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/21/2022] [Indexed: 11/22/2022] Open
Abstract
In this article, we report a case wherein a brain tumor was suspected based on computed tomography and magnetic resonance imaging findings. We made an initial diagnosis of malignant brain tumor based on methionine-positron emission tomography (PET) findings, but the correct diagnosis was dural arteriovenous fistula (DAVF). The patient was a 45-year-old man with DAVF who developed headache. Methionine-PET imaging showed high methionine uptake in the lesion. Although the tumor was strongly suspected from the findings of methionine-PET, the diagnosis of DAVF could be made correctly only by interpreting digital subtraction angiography and computed tomographic angiography. The findings of methionine-PET, which is considered useful in the diagnosis and denial of brain tumors, made the diagnosis of DAVF more difficult. The increased uptake of methionine-PET in DAVF is an important finding because, to our knowledge, this study is the first to report such finding. The results of this study might be useful for differential diagnoses when the diagnosis is uncertain.
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Affiliation(s)
- Taketo HANYU
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Masahiro NISHIHORI
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Takashi IZUMI
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Kazuya MOTOMURA
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Fumiharu OHKA
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Shunsaku GOTO
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Yoshio ARAKI
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Kinya YOKOYAMA
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Kenji UDA
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
| | - Ryuta SAITO
- Department of Neurosurgery, Nagoya University of Graduate School of Medicine
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Lu Y, Leng X, Zou R, Chen Q, Li W, Zhou X, Tan S, Huang X, Ding C, Gong F, Xiang J, Wang Y. Non-contrast enhanced silent MR angiography to evaluate hemodynamics and morphology of unruptured intracranial aneurysms: a comparative computational fluid dynamics study. J Neurointerv Surg 2022:jnis-2022-018901. [PMID: 35882551 DOI: 10.1136/jnis-2022-018901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 07/16/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Silent MR angiography (silent MRA) is a new generation of non-contrast enhanced angiography with outstanding advantages in visualizing cerebrovascular lesions and the follow-up after endovascular treatment for intracranial aneurysms (IAs). This study aims to investigate the reliability of silent MRA-based three-dimensional (3D) geometric description and hemodynamic calculation of IAs. METHODS 19 patients with 23 unruptured IAs, who underwent both silent MRA and 3D rotational angiography (3DRA), were included in this study. Computational fluid dynamics simulations were performed on all patient-specific 3D reconstruction images to compare the morphology and hemodynamics of the two different imaging models for IAs. RESULTS Silent MRA models had smaller maximum and perpendicular height (mm), aneurysmal surface area (mm2), and aneurysmal volume (mm3) than 3DRA (p<0.05); the differences of the above parameters between the two models were 9.0±6.2%, 7.7±7.4%, 15.9±13.0%, and 21.4±17.5%, respectively. However, correlation analysis of morphological parameters in various dimensions and model comparison showed good overall consistency in geometrical characteristics between the two models. Moderate coherence was observed between models in time-averaged wall shear stress of aneurysm and parent vessel (TAWSS, PAWSS), aneurysm velocity (AV), parent vessel velocity, and oscillatory shear index (OSI). However, strong correlations were observed among normalized aneurysm wall shear stress (NWSS), low shear area (LSA), inflow concentration index (ICI), and normalized aneurysm velocity (NAV). CONCLUSION Both morphological and hemodynamic assessments of IAs for silent MRA are comparable to 3DRA. Additionally, normalized indicators such as NWSS, LSA, ICI, and NAV were better than TAWSS, AV, and OSI in silent MRA-related hemodynamic evaluation.
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Affiliation(s)
- Yuzhao Lu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | | | - Rong Zou
- ArteryFlow Technology Co Ltd, Hangzhou, Zhejiang, China
| | - Qi Chen
- ArteryFlow Technology Co Ltd, Hangzhou, Zhejiang, China
| | - Wenqiang Li
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaobing Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Song Tan
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xiaofei Huang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Cong Ding
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Feixiang Gong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | | | - Yang Wang
- Department of Neurosurgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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