3D TOF turbo MR angiography for intracranial arteries: Phantom and clinical studies

Shigematsu, Yosuke; Korogi, Yukunori; Hirai, Toshinori; Okuda, Tomoko; Sugahara, Takeshi; Liang, Luxia; Takahashi, Manabu

doi:10.1002/(sici)1522-2586(199912)10:6<939::aid-jmri5>3.0.co;2-k

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…14,15 Turbo MR angiography measures less data than conventional MR angiography, and the residual spaces in the k-space are filled with zeros, thus reducing the scan time. 7,8 The ZFI technique generates thinner slice sections and increases matrix size along the in-plane phase-encoding direction. Thus, the ZFI technique allows for high-resolution turbo MR angiography in less scan time.…”

Section: Discussionmentioning

confidence: 99%

“…11,14,15 However, by using high-resolution turbo MR angiography with the ZFI technique, thinner slice sections with increased matrix size can be obtained in reduced scan time. [7][8][9][10] This probably accounts for why high-resolution turbo MR angiography in reduced scan time had a high degree of accuracy for the evaluation of both steno-occlusive lesions and basal cerebral MMVs compared with that of conventional MR angiography in previous reports. [11][12][13][14][15][16] Furthermore, we used other new imaging techniques, including MTC, TONE, and multislab, in the pulse sequence of high-resolution turbo MR angiography.…”

Section: Discussionmentioning

confidence: 99%

“…5,6 Recently, turbo MR angiography with zero-filling interpolation (ZFI) technique has been proposed as a new technique to reduce scan time for the evaluation of cerebrovascular diseases. 7,8 The ZFI along the slice direction generates thinner slice sections, and the ZFI along the in-plane phase-encoding direction increases the matrix size of the direction. [7][8][9][10] Thus, the ZFI technique allows for high-resolution turbo MR angiography in less scan time.…”

mentioning

confidence: 99%

“…7,8 The ZFI along the slice direction generates thinner slice sections, and the ZFI along the in-plane phase-encoding direction increases the matrix size of the direction. [7][8][9][10] Thus, the ZFI technique allows for high-resolution turbo MR angiography in less scan time. To our knowledge, however, no study has described the application of high-resolution turbo MR angiography with the ZFI technique to patients with moyamoya disease, and no attempt has been made to compare the sensitivity and specificity of high-resolution turbo MR angiography with those of conventional angiography.…”

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confidence: 99%

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High-Resolution Turbo Magnetic Resonance Angiography for Diagnosis of Moyamoya Disease

Yamada

Nakagawa

Matsushima

et al. 2001

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Background and Purpose-High-resolution turbo MR angiography with zero-filling interpolation (ZFI) technique is a new vascular imaging method with reduced scan time. The purpose of the present study was to evaluate high-resolution turbo MR angiography for the diagnosis and assessment of moyamoya disease. Methods-Forty-six patients suspected of having moyamoya disease were examined with high-resolution turbo MR angiography with the ZFI technique, MRI, and conventional angiography. Moyamoya disease was diagnosed in 42 of these patients. Blind, separate interpretation of the images was performed. Results-High-resolution turbo MR angiography and MRI accurately evaluated 349 (95%) and 325 (88%) of 368 arteries, respectively, but the degree of stenosis was overestimated in the other arteries. MR angiography and MRI depicted basal cerebral moyamoya vessels in 82 (98%) and 82 (98%) of 84 hemispheres, respectively. MR angiography also depicted leptomeningeal and transdural collateral vessels in 51 (100%) of 51 hemispheres and in 38 (88%) of 43 hemispheres, respectively. The sensitivity and specificity of high-resolution turbo MR angiography for the diagnosis of moyamoya disease were 98% and 100%, respectively. Conclusions-High-resolution turbo MR angiography in reduced scan time is highly accurate in the assessment of both steno-occlusive lesions and collateral vessels in moyamoya disease, thus providing a highly accurate (98%) diagnosis and assessment of moyamoya disease.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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High-Resolution Turbo Magnetic Resonance Angiography for Diagnosis of Moyamoya Disease

Yamada

Nakagawa

Matsushima

et al. 2001

Stroke

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“…This zerofilling approach does not improve spatial or volume resolution but does reduce the artifacts caused by partialvolume effects [11]. The technique applied to a 3D timeof-flight (TOF) magnetic resonance angiography (MRA) is also known as turbo MRA [12] and is illustrated in Fig. 3.…”

Section: History and Basic Principlesmentioning

confidence: 99%