Magnetic resonance angiography with fresh blood imaging for identification of hemangiomas and blood vessels around hemangiomas in oral and maxillofacial regions

2012 ◽  
Vol 113 (4) ◽  
pp. 559-566 ◽  
Author(s):  
Masafumi Oda ◽  
Tatsurou Tanaka ◽  
Shinji Kito ◽  
Shinobu Matsumoto-Takeda ◽  
Kozue Otsuka ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Blood Vessels ◽  
Fresh Blood ◽  
Blood Imaging ◽  
Oral And Maxillofacial Regions

scholarly journals Magnetic Resonance Angiography Using Fresh Blood Imaging in Oral and Maxillofacial Regions

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Masafumi Oda ◽  
Tatsurou Tanaka ◽  
Shinji Kito ◽  
Manabu Habu ◽  
Masaaki Kodama ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Clinical Significance ◽  
Clinical Applications ◽  
Fresh Blood ◽  
General Dentists ◽  
Blood Imaging ◽  
Oral And Maxillofacial Regions ◽  
Mr Sequences

The present paper provides general dentists with an introduction to the clinical applications and significance of magnetic resonance angiography (MRA) in the oral and maxillofacial regions. Specifically, the method and characteristics of MRA are first explained using the relevant MR sequences. Next, clinical applications to the oral and maxillofacial regions, such as identification of hemangiomas and surrounding vessels by MRA, are discussed. Moreover, the clinical significance of MRA for other regions is presented to elucidate future clinical applications of MRA in the oral and maxillofacial regions.

Angiography for Diagnosing Peripheral Arterial Occlusive Disease – A Technical, Clinical and Cost Comparison of Contrast-enhanced Magnetic Resonance Angiography and Unenhanced Magnetic Resonance Imaging Techniques with a Focus on Fresh Blood Imaging

2010 ◽  
Vol 6 (2) ◽  
pp. 54
Author(s):  
Carsten Schwenke ◽  
Monica Boos ◽  
Rainer Hentrich ◽  
Michael Blankenburg ◽  
Martin Rohrer ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Contrast Agent ◽  
Peripheral Arterial Occlusive Disease ◽  
Arterial Occlusive Disease ◽  
Occlusive Disease ◽  
Fresh Blood ◽  
Contrast Enhanced ◽  
Peripheral Arterial ◽  
Blood Imaging

This study compares the clinical and technical utility of non-contrast-enhanced magnetic resonance angiography (nce-MRA) and contrastenhanced MRA (ce-MRA) in a mini-review of patients with suspected peripheral arterial occlusive disease (PAOD) in whom both MRA approaches were indicated. It also looks at the costs of angiography for diagnosing peripheral arterial occlusive disease using either ce-MRA or nce-MRA in comparison with the example of fresh blood imaging (FBI). The costs for MRA were taken from a previous cost study and those for nce-MRA/FBI from published data and appropriate calculations. The average total investigation costs for ce-MRA were found to be €205, including €59 for consumables, mainly originating from the contrast agent costs (according to German list prices for 2009). On the other hand, for nce-MRA, average total costs ranged from €190 to €239, depending on the acquisition time (12–32 minutes), and a larger number of additional diagnostic investigations were found. Irrespective of costs, several clinical and technical benefits such as image quality, higher robustness and the absence of limitations with complex vessel courses favoured ce-MRA. The consequences of using ce-MRA were fewer technical failures and, therefore, a higher throughput of patients indicated for contrast agent use in the radiology department; this led to more procedures per day and, therefore, more efficient use of diagnostic imaging resources.

Accurate Unsupervised 3D Segmentation of Blood Vessels Using Magnetic Resonance Angiography

2018 ◽  
pp. 71-94 ◽  
Author(s):  
Ahmed Shalaby ◽  
Ali Mahmoud ◽  
Samineh Mesbah ◽  
Maryam El-Baz ◽  
Jasjit S. Suri ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Blood Vessels ◽  
3D Segmentation

Magnetic resonance angiography of the normal canine heart and associated blood vessels

2008 ◽  
Vol 178 (1) ◽  
pp. 130-132 ◽  
Author(s):  
Samuel Contreras ◽  
José María Vázquez ◽  
Ana De Miguel ◽  
Manuel Morales ◽  
Francisco Gil ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Blood Vessels ◽  
Canine Heart

Probabilistic Modeling of Blood Vessels for Segmenting Magnetic Resonance Angiography Images

2017 ◽  
Vol 5 (3) ◽  
Author(s):  
Ayman El-baz ◽  
Ahmed Shalaby ◽  
Fatma Taher ◽  
Maryam El-Baz ◽  
Mohammed Ghazal ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Blood Vessels ◽  
Probabilistic Modeling

Magnetic resonance angiography: A comparison of techniques and applications in dogs and humans

2008 ◽  
Vol 36 (02) ◽  
pp. 1-12 ◽  
Author(s):  
A. Brühschwein ◽  
K. Rieden ◽  
U. Matis ◽  
I. Foltin
Keyword(s):  
Veterinary Medicine ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Blood Vessels ◽  
Clinical Signs ◽  
Maximum Intensity Projection ◽  
Vascular Architecture ◽  
Advantages And Disadvantages ◽  
Technical Requirements ◽  
Contrast Angiography

SummaryMagnetic resonance angiography (MRA) is a non-invasive imaging technique for visualising blood vessels and blood flow. The first half of this article is a literature review of the three basic MRA techniques: Timeof-flight (TOF) angiography, phase-contrast angiography and contrast-enhanced angiography. Physical principles, technical requirements, investigated parameters, advantages and disadvantages of the methods, and the correlation between application of contrast medium and time of examination are discussed. Subsequent processing of the MR images using “maximum intensity projection“ (MIP) provided a threedimensional image of the vascular architecture and improved the anatomical orientation; however, MIP was shown to sometimes cause additional diagnostic pitfalls. Therefore, the original slices should always be consulted in addition to the MIP. The second half of this article describes the application of the different MRA methods in veterinary medicine and compares the results with MRA in human medicine. A total of 15 dogs with clinical signs that warranted further work-up using MRA, and 20 human patients requiring MRA, were included in the study. Five healthy dogs served as controls. The vascular architecture in dogs was compared with that in human patients, and the images were scrutinized for lesions that corresponded to the clinical signs. An abnormal vascular architecture was identified in eight dogs with a portosystemic shunt, which allowed targeted surgical intervention. Aneurysms, thrombi and stenoses were seen in images from human patients. Comparison of the vascular architecture in humans and dogs allowed the anatomic identification and evaluation of the visualised blood vessels in the dog. Magnetic resonance imaging is still a relatively new technique in veterinary medicine and appears to be a promising diagnostic tool for a number of disorders as the availability of high-field MRI in veterinary clinics increases.

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