Unenhanced calf MR angiography at 3.0 T using electrocardiography-gated partial-fourier fast spin echo imaging with variable flip angle

Li, Dan; Lin, Jia Wei; Yan, Fuhua; Qingyuan, Wu; Lv, Weiwei; San, Yan; Yun, Hong

doi:10.1007/s00330-010-2028-8

Cited by 12 publications

(5 citation statements)

References 25 publications

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“…While several well-known non-enhanced MRA techniques such as Time-of-Flight (TOF)-MRA [22], phase contrast MRA [23], and Turbo-Spin-Echo (TSE) [18], [24], [25], have shown to be more or less inadequate for the investigation of PAOD, QISS-MRA has already shown satisfactory results in the assessment of the peripheral arteries. In comparison to CE-MRA, sensitivities ranged from 84.9% to 98.6% and specificities from 94.6% to 96.8% [11]–[13], [16].…”

Section: Discussionmentioning

confidence: 99%

Non-Contrast-Enhanced MR Angiography at 3 Tesla in Patients with Advanced Peripheral Arterial Occlusive Disease

et al. 2014

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PurposeThe aim of this study was to assess the diagnostic performance of ECG-gated non-contrast-enhanced quiescent interval single-shot (QISS) magnetic resonance angiography at a magnetic field strength of 3 Tesla in patients with advanced peripheral arterial occlusive disease (PAOD).Method and MaterialsA total of 21 consecutive patients with advanced PAOD (Fontaine stage IIb and higher) referred for peripheral magnetic resonance angiography (MRA) were included. Imaging was performed on a 3 T whole body MR. Image quality and stenosis diameter were evaluated in comparison to contrast-enhanced continuous table and TWIST MRA (CE-MRA) as standard of reference. QISS images were acquired with a thickness of 1.5 mm each (high-resolution QISS, HR-QISS). Two blinded readers rated the image quality and the degree of stenosis for both HR-QISS and CE-MRA in 26 predefined arterial vessel segments on 5-point Likert scales.ResultsWith CE-MRA as the reference standard, HR-QISS showed high sensitivity (94.1%), specificity (97.8%), positive (95.1%), and negative predictive value (97.2%) for the detection of significant (≥50%) stenosis. Interreader agreement for stenosis assessment of both HR-QISS and CE-MRA was excellent (κ-values of 0.951 and 0.962, respectively). As compared to CR-MRA, image quality of HR-QISS was significantly lower for the distal aorta, the femoral and iliac arteries (each with p<0.01), while no significant difference was found in the popliteal (p = 0.09) and lower leg arteries (p = 0.78).ConclusionNon-enhanced ECG-gated HR-QISS performs very well in subjects with severe PAOD and is a good alternative for patients with a high risk of nephrogenic systemic fibrosis.

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Section: Discussionmentioning

confidence: 99%

Non-Contrast-Enhanced MR Angiography at 3 Tesla in Patients with Advanced Peripheral Arterial Occlusive Disease

et al. 2014

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“…Clinical evaluation of FBI in PAD patients (5–10) has demonstrated that the technique is susceptible to motion artifacts, with two studies reporting nondiagnostic results in as many as 47% of all cases (7, 8). In FBI, systolic and diastolic phase datasets are acquired sequentially, over the course of several minutes.…”

Section: Introductionmentioning

confidence: 99%

Sagittal fresh blood imaging with interleaved acquisition of systolic and diastolic data for improved robustness to motion

Atanasova

Kim

Storey

et al. 2013

Magnetic Resonance in Med

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Purpose To improve robustness to patient motion of ‘fresh blood imaging’ (FBI) for lower extremity non-contrast MRA. Methods In FBI, two sets of 3D fast spin echo images are acquired at different cardiac phases and subtracted to generate bright-blood angiograms. Routinely performed with a single coronal slab and sequential acquisition of systolic and diastolic data, FBI is prone to subtraction errors due to patient motion. In this preliminary feasibility study, FBI was implemented with two sagittal imaging slabs, and the systolic and diastolic acquisitions were interleaved to minimize sensitivity to motion. The proposed technique was evaluated in volunteers and patients. Results In ten volunteers, imaged while performing controlled movements, interleaved FBI demonstrated better tolerance to subject motion than sequential FBI. In one patient with peripheral arterial disease, interleaved FBI offered better depiction of collateral flow by reducing sensitivity to inadvertent motion. Conclusions FBI with interleaved acquisition of diastolic and systolic data in two sagittal imaging slabs offers improved tolerance to patient motion.

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“…SPACE sequence can also mitigate flow and motion artifacts, prevent inflow effects and allow for signal contrast between different tissues to emerge (12). In recent studies, 3D SPACE sequence has been used for imaging of lower peripheral artery (13), central veins of the chest (9) and portal veins (14) with improved spatial resolution and speed. Since it is the relaxation properties of blood rather than flow that generate the signal contrast, the SPACE sequence can guarantee the visualization of the vessels and presence of stenosis and occlusion (9).…”

Section: Discussionmentioning

confidence: 99%

Assessment of thoracic vasculature in patients with central bronchogenic carcinoma by unenhanced magnetic resonance angiography: comparison between 2D free-breathing TrueFISP, 2D breath-hold TrueFISP and 3D respiratory-triggered SPACE

Wang¹,

Lv²,

Yang³

et al. 2017

J. Thorac. Dis.

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Unenhanced calf MR angiography at 3.0 T using electrocardiography-gated partial-fourier fast spin echo imaging with variable flip angle

Abstract: Although further technical refinements are required, this optimized UE technique may be used as a supplement to contrast-enhanced MRA particularly in patients with PAOD in whom venous contamination occurs frequently.

Cited by 12 publications

References 25 publications

Non-Contrast-Enhanced MR Angiography at 3 Tesla in Patients with Advanced Peripheral Arterial Occlusive Disease

Non-Contrast-Enhanced MR Angiography at 3 Tesla in Patients with Advanced Peripheral Arterial Occlusive Disease

Sagittal fresh blood imaging with interleaved acquisition of systolic and diastolic data for improved robustness to motion

Assessment of thoracic vasculature in patients with central bronchogenic carcinoma by unenhanced magnetic resonance angiography: comparison between 2D free-breathing TrueFISP, 2D breath-hold TrueFISP and 3D respiratory-triggered SPACE

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