Reduction of partial‐volume artifacts with zero‐filled interpolation in three‐dimensional MR angiography

Du, Yiping P.; Parker, Dennis L.; Davis, Wayne L.; Cao, Guang

doi:10.1002/jmri.1880040517

Cited by 197 publications

(158 citation statements)

References 7 publications

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“…The visualization of the communicating and perforating arteries of the ankle near the terminal end of the receiver array was also noted. In evaluating these latter two groups, we found it valuable to perform threefold magnification by using zero padding of the k-space data (38).…”

Section: Radiologic Evaluationmentioning

confidence: 99%

Peripheral Vasculature: High-Temporal- and High-Spatial-Resolution Three-dimensional Contrast-enhanced MR Angiography

Haider

Glockner²,

Stanson

et al. 2009

Radiology

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Purpose:To prospectively evaluate the feasibility of performing high-spatial-resolution (1-mm isotropic) time-resolved three-dimensional (3D) contrast material-enhanced magnetic resonance (MR) angiography of the peripheral vasculature with Cartesian acquisition with projectionreconstruction-like sampling (CAPR) and eightfold accelerated two-dimensional (2D) sensitivity encoding (SENSE). Materials and Methods:All studies were approved by the institutional review board and were HIPAA compliant; written informed consent was obtained from all participants. There were 13 volunteers (mean age, 41.9; range, 27-53 years). The CAPR sequence was adapted to provide 1-mm isotropic spatial resolution and a 5-second frame time. Use of different receiver coil element sizes for those placed on the anterior-to-posterior versus left-to-right sides of the field of view reduced signal-to-noise ratio loss due to acceleration. Results from eight volunteers were rated independently by two radiologists according to prominence of artifact, arterial to venous separation, vessel sharpness, continuity of arterial signal intensity in major arteries (anterior and posterior tibial, peroneal), demarcation of origin of major arteries, and overall diagnostic image quality. MR angiographic results in two patients with peripheral vascular disease were compared with their results at computed tomographic angiography. Results:The sequence exhibited no image artifact adversely affecting diagnostic image quality. Temporal resolution was evaluated to be sufficient in all cases, even with known rapid arterial to venous transit. The vessels were graded to have excellent sharpness, continuity, and demarcation of the origins of the major arteries. Distal muscular branches and the communicating and perforating arteries were routinely seen. Excellent diagnostic quality rating was given for 15 (94%) of 16 evaluations. Conclusion:The feasibility of performing high-diagnostic-quality timeresolved 3D contrast-enhanced MR angiography of the peripheral vasculature by using CAPR and eightfold accelerated 2D SENSE has been demonstrated.

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Section: Radiologic Evaluationmentioning

confidence: 99%

Peripheral Vasculature: High-Temporal- and High-Spatial-Resolution Three-dimensional Contrast-enhanced MR Angiography

Haider

Glockner²,

Stanson

et al. 2009

Radiology

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“…The field of view extended from the arch of aorta to above the carotid canal in the petrous part of the temporal bones, necessitating image acquisition with a cardiac coil. Reconstructed in plane resolution was 0.4 x 0.4 mm, with acquisition resolution of 0.8 x 0.8 mm (Du et al, 1994) and slice spacing of 2 mm. The aortic arch was used as a reference point for the subsequent registration of the images at different head displacements.…”

Section: Anatomy Acquisitionmentioning

confidence: 99%

The role of the carotid sinus in the reduction of arterial wall stresses due to head movements—potential implications for cervical artery dissection

Callaghan

Soellinger

Baumgartner

et al. 2009

Journal of Biomechanics

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The role of the carotid sinus in the reduction of arterial wall stresses due to head movements--potential implications for cervical artery dissection Abstract Spontaneous dissection of the cervical internal carotid artery (sICAD) is a major cause of stroke in young adults. A tear in the inner part of the vessel wall triggers sICAD as it allows the blood to enter the wall and develop a transmural hematoma. The etiology of the tear is unknown but many patients with sICAD report an initiating trivial trauma. We thus hypothesised that the site of the tear might correspond with the location of maximal stress in the carotid wall. Carotid artery geometries segmented from magnetic resonance images of a healthy subject at different static head positions were used to define a path of motion and deformation of the right cervical internal carotid artery (ICA). Maximum head rotation to the left and rotation to the left combined with hyperextension of the neck were investigated using a structural finite element model. A role of the carotid sinus as a geometrically compliant feature accommodating extension of the artery is shown. At the extreme range of the movements, the geometrical compliance of the carotid sinus is limited and significant stress concentrations appear just distal to the sinus with peak stresses at the internal wall on the posterior side of the vessel following maximum head rotation and on the anteromedial portion of the vessel wall following rotation and hyperextension. Clinically, the location of sICAD initiation is 10-30 mm distal to the origin of the cervical ICA, which corresponds with the peak stress locations observed in the model, thus supporting trivial trauma from natural head movements as a possible initiating factor in sICAD. BM-D-08-00610ROriginalThe role of the carotid sinus in the reduction of arterial wall stresses due to head movements -potential implications for cervical artery dissection

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“…18,37 Moreover, zero-filled interpolation of the 256ϫ256 images can be used to create 512ϫ512 images to reduce the partial-volume effects in imaging pixels. 38 This can be achieved by appending zeros on each side of the data before Fourier transformation.…”

Section: Possible Further Improvementsmentioning

confidence: 99%

Noninvasive In Vivo Human Coronary Artery Lumen and Wall Imaging Using Black-Blood Magnetic Resonance Imaging

et al. 2000

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Background-High-resolution MRI has the potential to noninvasively image the human coronary artery wall and define the degree and nature of coronary artery disease. Coronary artery imaging by MR has been limited by artifacts related to blood flow and motion and by low spatial resolution. Methods and Results-We used a noninvasive black-blood (BB) MRI (BB-MR) method, free of motion and blood-flow artifacts, for high-resolution (down to 0.46 mm in-plane resolution and 3-mm slice thickness) imaging of the coronary artery lumen and wall. In vivo BB-MR of both normal and atherosclerotic human coronary arteries was performed in 13 subjects: 8 normal subjects and 5 patients with coronary artery disease. The average coronary wall thickness for each cross-sectional image was 0.75Ϯ0.17 mm (range, 0.55 to 1.0 mm) in the normal subjects. MR images of coronary arteries in patients with Ն40% stenosis as assessed by x-ray angiography showed localized wall thickness of 4.38Ϯ0.71 mm (range, 3.30 to 5.73 mm). The difference in maximum wall thickness between the normal subjects and patients was statistically significant (PϽ0.0001). Conclusions-In

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Reduction of partial‐volume artifacts with zero‐filled interpolation in three‐dimensional MR angiography

Cited by 197 publications

References 7 publications

Peripheral Vasculature: High-Temporal- and High-Spatial-Resolution Three-dimensional Contrast-enhanced MR Angiography

Peripheral Vasculature: High-Temporal- and High-Spatial-Resolution Three-dimensional Contrast-enhanced MR Angiography

The role of the carotid sinus in the reduction of arterial wall stresses due to head movements—potential implications for cervical artery dissection

Noninvasive In Vivo Human Coronary Artery Lumen and Wall Imaging Using Black-Blood Magnetic Resonance Imaging

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