Use of blood pool agents with steady‐state MRI to assess the vascular system

Thakor, Avnesh S.; Chung, Jonathan; Patel, Premal A.; Chan, Anthony Tak Cheung; Ahmed, Amdad; McNeil, Graeme; Liu, David M.; Forster, Bruce B.; Klass, Darren

doi:10.1002/jmri.25636

Cited by 10 publications

(3 citation statements)

References 58 publications

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“…The subclavian artery/vein can be assessed by MR angiography and post-contrast 3D-VIBE. CE-MRA has been explored and proven to be helpful for the diagnosis of vascular TOS [13]. Arterial TOS is most often associated with the cervical or abnormal first rib [14].…”

Section: Discussionmentioning

confidence: 99%

A Novel Approach for Imaging of Thoracic Outlet Syndrome Using Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA), Short Inversion Time Inversion Recovery Sampling Perfection with Application-Optimized Contrasts Using Different Flip Angle Evolutions (T2-STIR-SPACE), and Volumetric Interpolated Breath-Hold Examination (VIBE)

Zhang

Chen

et al. 2019

Med Sci Monit

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The aim of this study was to introduce a novel method combining contrast-enhanced magnetic resonance angiography (CE-MRA), short inversion time inversion recovery sampling perfection with application-optimized contrasts using different flip angle evolutions (T2-STIR-SPACE) and volumetric interpolated breath-hold examination (VIBE) sequences in the assessment of thoracic outlet syndrome (TOS). Material/Methods: CE-MRA, T2-STIR-SPACE, and VIBE techniques were employed to evaluate neurovascular bundles in 27 patients clinically suspected of TOS. Images were evaluated to determine the cause of neurovascular bundle compression. Surgical exploration was performed in patients with abnormal magnetic resonance imaging (MRI) results. Results: Twenty patients were found to be abnormal: 6 cases showed only neurogenic TOS and the correlates included infraclavicular hemangiomas (n=1) and transverse cervical artery (n=5). Arterial-neurogenic TOS was found in 4 cases, including subclavian lymph node metastasis from breast cancer (n=3) and schwannoma (n=1). Arterial-venous-neurogenic TOS was found in 1 subject, and the correlates included a fibrous band from the cervical rib and elongated C7 transverse process. In this case, the subclavian artery/vein was compressed dynamically. Venous-neurogenic TOS was noted in one subject. Nine patients were considered as post-traumatic TOS, including brachial plexus edema (n=3), the brachial plexus rupture (n=2), peri-brachial plexus effusion (n=3), and stenosis of the SCA (n=1). In the remaining 7 patients, MRI did not detect abnormalities. Conclusions: TOS can be evaluated by CE-MRA, T2-STIR-SPACE, and VIBE during a single examination, with a reduced contrast material dose. This imaging modality performs well in showing the anatomical structure of the neurovascular bundle and the cause of the compression.

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Section: Discussionmentioning

confidence: 99%

A Novel Approach for Imaging of Thoracic Outlet Syndrome Using Contrast-Enhanced Magnetic Resonance Angiography (CE-MRA), Short Inversion Time Inversion Recovery Sampling Perfection with Application-Optimized Contrasts Using Different Flip Angle Evolutions (T2-STIR-SPACE), and Volumetric Interpolated Breath-Hold Examination (VIBE)

Zhang

Chen

et al. 2019

Med Sci Monit

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“…Contrast-enhanced MRA may act as a less invasive substitute for DSA, with correlation between MRI and DSA findings of approximately 95 % in patients with lower limb atherosclerotic disease, although MRI may tend to underestimate the degree of stenosis [57]. Use of blood pool MRI contrast agents, which stay in the intravascular space for a longer period of time, may allow for the acquisition of higher spatial resolution sequences, which may overcome the tendenc y to underestimate the degree of stenosis, as well as permitting arterial imaging with dynamic maneuvers [58]. There are a number of absolute and relative contraindications to MRI, including some implantable cardiac devices, endovascular stent grafts and orthopedic implants to name a few.…”

Section: Investigationsmentioning

confidence: 99%

Functional Popliteal Artery Entrapment Syndrome: An Approach to Diagnosis and Management

2021

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Popliteal Artery Entrapment Syndrome (PAES) is an uncommon syndrome that predominantly affects young athletes. Functional PAES is a subtype of PAES without anatomic entrapment of the popliteal artery. Patients with functional PAES tend to be younger and more active than typical PAES patients. A number of differential diagnoses exist, the most common of which is chronic exertional compartment syndrome. There is no consensus regarding choice of investigation for these patients. However, exercise ankle-brachial indices and magnetic resonance imaging are less invasive alternatives to digital subtraction angiography. Patients with typical symptoms that are severe and repetitive should be considered for intervention. Surgical intervention consists of release of the popliteal artery, either via a posterior or medial approach. The Turnipseed procedure involves a medial approach with a concomitant release of the medial gastrocnemius and soleal fascia, the medial tibial attachments of the soleus and excision of the proximal third of the plantaris muscle. Injection of botulinum A toxin under electromyographic guidance has recently shown promise as a diagnostic and/or therapeutic intervention in small case series. This review provides relevant information for the clinician investigating and managing patients with functional PAES.

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“…Alternative imaging modalities, such as delayed-phase computed tomography scans, contrast-enhanced duplex ultrasound imaging, or blood pool agents with magnetic resonance imaging, may be able to detect these lowflow endoleaks. [52][53][54] Endograft infection as an indication for conversion was reported in 16 articles. 18,19,26,28,[30][31][32][33]35,[41][42][43][44][45]47,48 Infection was present in 64 patients (8.1%), 38 (6.2%) and 26 (14.9%) in an elective and urgent setting, respectively.…”

Section: Journal Of Vascular Surgerymentioning

confidence: 99%