Small hepatic lesions found on single-phase helical CT in patients with malignancy: Diagnostic capability of breath-hold, multisection fluid-attenuated inversion-recovery (FLAIR) MR imaging using a half-fourier acquisition single-shot turbo spin-echo (HASTE) sequence

2007 ◽  
Vol 25 (1) ◽  
pp. 129-136 ◽  
Author(s):  
Katsumi Sasaki ◽  
Katsuyoshi Ito ◽  
Takeshi Fujita ◽  
Ayame Shimizu ◽  
Masayasu Yasui ◽  
...  
Keyword(s):  
Single Phase ◽  
Spin Echo ◽  
Helical Ct ◽  
Breath Hold ◽  
Single Shot ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Diagnostic Capability ◽  
Fluid Attenuated Inversion Recovery ◽  
Hepatic Lesions

Fast Breath-Hold T2-Weighted MRI of the Kidney by Means of Half-Fourier Single-Shot Turbo Spin Echo: Comparison with High Resolution Turbo Spin Echo Sequence

2001 ◽  
Vol 25 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Yoshiharu Nakayama ◽  
Yasuyuki Yamashita ◽  
Yasuharu Matsuno ◽  
Yi Tang ◽  
Tomohiro Namimoto ◽  
...  
Keyword(s):  
High Resolution ◽  
Spin Echo ◽  
Breath Hold ◽  
Single Shot ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Spin Echo Sequence

Most commonly used sequences and clinical protocols for brain and spine magnetic resonance imaging allowing better identification of pathological changes in dogs

2013 ◽  
Vol 16 (1) ◽  
pp. 157-163 ◽  
Author(s):  
Y. Zhalniarovich ◽  
Z. Adamiak ◽  
A. Pomianowski ◽  
M. Jaskólska
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Spin Echo ◽  
Inversion Recovery ◽  
Fast Spin Echo ◽  
Single Shot ◽  
Turbo Spin Echo ◽  
Resonance Imaging ◽  
Turbo Spin

Abstract Magnetic resonance imaging is the best imaging modality for the brain and spine. Quality of the received images depends on many technical factors. The most significant factors are: positioning the patient, proper coil selection, selection of appropriate sequences and image planes. The present contrast between different tissues provides an opportunity to diagnose various lesions. In many clinics magnetic resonance imaging has replaced myelography because of its noninvasive modality and because it provides excellent anatomic detail. There are many different combinations of sequences possible for spinal and brain MR imaging. Most frequently used are: T2-weighted fast spin echo (FSE), T1- and T2-weighted turbo spin echo, Fluid Attenuation Inversion Recovery (FLAIR), T1-weighted gradient echo (GE) and spin echo (SE), high-resolution three-dimensional (3D) sequences, fat-suppressing short tau inversion recovery (STIR) and half-Fourier acquisition single-shot turbo spin echo (HASTE). Magnetic resonance imaging reveals neurologic lesions which were previously hard to diagnose antemortem.

Free-breathing BLADE acquisition method improves T2-weighted cardiac MR image quality compared with conventional breath-hold turbo spin-echo cartesian acquisition

2020 ◽  
pp. 028418512092456
Author(s):  
Jingjing Liu ◽  
Hang Jin ◽  
Yinyin Chen ◽  
Caixia Fu ◽  
Caizhong Chen ◽  
...  
Keyword(s):  
Image Quality ◽  
Spin Echo ◽  
Free Breathing ◽  
Fat Suppression ◽  
Breath Hold ◽  
Signal Loss ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Imaging Sequence ◽  
Ghosting Artifacts

Background Cardiac magnetic resonance (MR) has become an essential diagnostic imaging modality in cardiovascular disease. However, the insufficient image quality of traditional breath-hold (BH) T2-weighted (T2W) imaging may compromise its diagnostic accuracy. Purpose To assess the efficacy of the BLADE technique to reduce motion artifacts and improve the image quality. Material and Methods Free-breathing TSE-T2W imaging sequence with cartesian and BLADE k-space trajectory were acquired in 20 patients. Thirty patients underwent conventional BH turbo spin-echo (TSE) T2W imaging and free-breathing BLADE T2W (FB BLADE-T2W) imaging. Twenty-one patients who had a signal loss of myocardium in BH short-axis T2W turbo inversion recovery (TSE-T2W-TIR) were scanned using free-breathing BLADE T2W turbo inversion recovery (BLADE TSE-T2W-TIR). The overall image quality, blood nulling, and visualization of the heart were scored on a 5-point Likert scale. The signal loss of myocardium, incomplete fat suppression near the myocardium, and the streaking or ghosting artifacts were noted in T2W-TIR sequences additionally. Results The overall imaging quality, blood nulling, and the visualization of heart structure of FB BLADE-T2W imaging sequence were significantly better than those of FB T2W imaging with Cartesian k-space trajectory and BH TSE-T2W imaging sequence ( P<0.01). The FB BLADE TSE-T2W-TIR reduces the myocardium signal dropout ( P<0.05), incomplete fat suppression near myocardium ( P<0.05), and the streaking and ghosting artifacts ( P<0.05) in comparison with the BH TSE-T2W-TIR. Conclusions FB BLADE T2W imaging provides improved myocardial visibility, less motion sensitivity, and better image quality. It may be applied in patients who have poor breath-holding capability.

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