MR angiography of the head and neck: value of two-dimensional phase-contrast projection technique.

Applegate, Gregory R.; Talagala, S. Lalith; Applegate, L J

doi:10.2214/ajr.159.2.1632359

Cited by 15 publications

(8 citation statements)

References 9 publications

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“…In subject 14, the bilateral lingual arteries penetrated the mylohyoid muscle near the canines into the submandibular space and communicated with the branch of facial veins, then ran forward to the anterior part of the mandible. The bilateral sublingual arteries could not be identified in 4/18 cases (subjects [15][16][17][18]. Fig.…”

Section: Resultsmentioning

confidence: 93%

A new method for displaying the lingual artery using high-resolution three-dimensional phase-contrast magnetic resonance angiography

Kami¹,

Chikui²,

Shiraishi³

et al. 2013

International Journal of Oral and Maxillofacial Surgery

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Section: Resultsmentioning

confidence: 93%

A new method for displaying the lingual artery using high-resolution three-dimensional phase-contrast magnetic resonance angiography

Kami¹,

Chikui²,

Shiraishi³

et al. 2013

International Journal of Oral and Maxillofacial Surgery

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“…Phase-contrast magnetic resonance angiography is most sensitive to the specific flow direction and velocity, which are determined using the imaging parameters for a flowencoding gradient [6,9,12]. The flow direction is specified with the applied direction of the gradient.…”

Section: Patientsmentioning

confidence: 99%

“…Magnetic resonance angiography (MRA) is commonly applied to evaluate intracranial vascular and cervical carotid artery disease [6][7][8][9][10][11][12]. Vessels appear on MRA without the use of enhancing materials.…”

Section: Introductionmentioning

confidence: 99%

“…According to the imaging principle used, MRA can be classified into phase-contrast MRA (PC-MRA) and time-of-flight MRA (TOF-MRA). PC-MRA has excellent background suppression, allows variable velocity encoding, and provides directional flow information [6][7][8][9]12]. TOF-MRA is susceptible to saturation effects, and substances with short T1 may simulate flow [6,7,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Optimum conditions for detecting the inferior alveolar artery using phase-contrast magnetic resonance angiography

et al. 2010

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Objectives The inferior alveolar artery (IAA), accompanied by the inferior alveolar nerve, runs through the mandibular canal. The mandibular canal can be observed by conventional radiography and computed tomography, although it is sometimes difficult to identify on these images. This study examined visualization of the IAA with phasecontrast magnetic resonance angiography (PC-MRA). Methods Phase-contrast magnetic resonance angiography images were obtained in the double oblique sagittal plane by using a two-dimensional, fast, low-angle shot (2D FLASH) sequence in five healthy volunteers. A flowencoding gradient was applied from anterior to posterior, with velocity-encoding numbers (VENCs) of 10, 8, 6, 4, 2, and 1 cm/s. Two observers subjectively evaluated the detectability of the IAA in three mandibular regions on all PC-MRA images. Results The IAA appeared as a line of high signal intensity on the PC-MRA images. In the mandibular ramus region, the rating scores at VENCs of 1 and 2 cm/s were significantly higher than those at VENCs of 8 and 10 cm/s (p \ 0.05). In the molar region, the scores at a VENC of 1 cm/s were significantly higher than those at VENCs of 8 and 10 cm/s (p \ 0.05). However, in the premolar region, there was no significant difference among the VENCs (p = 0.0843), with scores of 0 (poor) or 1 (fair). Conclusions The IAA was visualized by using PC-MRA at appropriate VENC settings. The optimal condition for detecting the IAA appeared to be at a VENC of 1 cm/s, although the IAA was still not visible in the premolar region.

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“…Thick-slab phase contrast angiography has been described, but it suffers from phase artifacts due to overlying vessels. 17 More recently, breath-hold contrast-enhanced three-dimensional angiography showed promise in the evaluation of renal artery stenosis. 18 Further, STAR (signal targeting with alternating radiofrequency), a subtraction TOF technique, provided angiograms with excellent flow contrast and suppression of background.…”

Section: Angiographymentioning

confidence: 99%

The role of magnetic resonance imaging and spectroscopy in transplantation: from animal models to man

2000

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MR angiography of the head and neck: value of two-dimensional phase-contrast projection technique.

Abstract: MR angiography is commonly

Cited by 15 publications

References 9 publications

A new method for displaying the lingual artery using high-resolution three-dimensional phase-contrast magnetic resonance angiography

A new method for displaying the lingual artery using high-resolution three-dimensional phase-contrast magnetic resonance angiography

Optimum conditions for detecting the inferior alveolar artery using phase-contrast magnetic resonance angiography

The role of magnetic resonance imaging and spectroscopy in transplantation: from animal models to man

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