keyword
MENU ▼
Read by QxMD icon Read
search

Black blood image

keyword
https://www.readbyqxmd.com/read/28884851/-bottom-up-in-situ-proteomic-differentiation-of-human-and-non-human-haemoglobins-for-forensic-purposes-by-maldi-tof-ms-ms
#1
K P Kirkbride, S Kamanna, J Henry, N Voelcker, A Linacre
RATIONALE: The detection and identification of human blood on crime-related items are of particular relevance to many investigations because shed blood can provide evidence of violent contact between individuals. However, for any detection and identification technique, specificity is a critical performance characteristic to assess; that is, whether the technique has the capability to differentiate between human blood (which usually is of relevance to a criminal investigation) and non-human blood (which usually would not be associated with a crime but may be detected incidentally)...
September 8, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28867671/the-development-and-optimisation-of-3d-black-blood-r2-mapping-of-the-carotid-artery-wall
#2
Jianmin Yuan, Martin J Graves, Andrew J Patterson, Andrew N Priest, Pascal P R Ruetten, Ammara Usman, Jonathan H Gillard
PURPOSE: To develop and optimise a 3D black-blood R2* mapping sequence for imaging the carotid artery wall, using optimal blood suppression and k-space view ordering. METHODS: Two different blood suppression preparation methods were used; Delay Alternating with Nutation for Tailored Excitation (DANTE) and improved Motion Sensitive Driven Equilibrium (iMSDE) were each combined with a three-dimensional (3D) multi-echo Fast Spoiled GRadient echo (ME-FSPGR) readout...
September 1, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28858894/multiple-sclerosis-improved-detection-of-active-cerebral-lesions-with-3-dimensional-t1-black-blood-magnetic-resonance-imaging-compared-with-conventional-3-dimensional-t1-gre-imaging
#3
Nora N Sommer, Tobias Saam, Eva Coppenrath, Hendrik Kooijman, Tania Kümpfel, Maximilian Patzig, Sebastian E Beyer, Wieland H Sommer, Maximilian F Reiser, Birgit Ertl-Wagner, Karla M Treitl
OBJECTIVES: The aim of this study was to assess the diagnostic accuracy of a modified high-resolution whole-brain three-dimensional T1-weighted black-blood sequence (T1-weighted modified volumetric isotropic turbo spin echo acquisition [T1-mVISTA]) in comparison to a standard three-dimensional T1-weighted magnetization-prepared rapid gradient echo (MP-RAGE) sequence for detection of contrast-enhancing cerebral lesions in patients with relapsing-remitting multiple sclerosis (MS). MATERIALS AND METHODS: After institutional review board approval and informed consent, 22 patients (8 men; aged 31...
August 30, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28832083/a-unique-immunofluorescence-protocol-to-detect-protein-expression-in-vascular-tissues-tacking-a-long-standing-pathological-hitch
#4
Puneet Gandhi, Richa Khare
OBJECTIVE: Autofluorescence induced interference is one of the major drawbacks in immunofluorescence analysis of formalin-fixed paraffin-embedded tissues, as it decreases the signal-to-noise ratio of specific labeling. Apart from aldehyde-fixation induced artifacts; collagen and elastin, red blood cells and endogenous fluorescent pigment lipofuscin are prime sources of autofluorescence in vascular and aging tissues. We describe herein, an optimized indirect-immunofluorescence method for archival formalin-fixed paraffin-embedded tissues tissues and cryo sections, using a combination of 3-reagents in a specific order, to achieve optimal fluorescence signals and imaging...
2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28814675/retinal-amyloid-pathology-and-proof-of-concept-imaging-trial-in-alzheimer-s-disease
#5
Yosef Koronyo, David Biggs, Ernesto Barron, David S Boyer, Joel A Pearlman, William J Au, Shawn J Kile, Austin Blanco, Dieu-Trang Fuchs, Adeel Ashfaq, Sally Frautschy, Gregory M Cole, Carol A Miller, David R Hinton, Steven R Verdooner, Keith L Black, Maya Koronyo-Hamaoui
BACKGROUND: Noninvasive detection of Alzheimer's disease (AD) with high specificity and sensitivity can greatly facilitate identification of at-risk populations for earlier, more effective intervention. AD patients exhibit a myriad of retinal pathologies, including hallmark amyloid β-protein (Aβ) deposits. METHODS: Burden, distribution, cellular layer, and structure of retinal Aβ plaques were analyzed in flat mounts and cross sections of definite AD patients and controls (n = 37)...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28766810/evaluation-of-carotid-atherosclerotic-plaque-surface-characteristics-utilizing-simultaneous-noncontrast-angiography-and-intraplaque-hemorrhage-snap-technique
#6
Shuo Chen, Huilin Zhao, Jifan Li, Zechen Zhou, Rui Li, Niranjan Balu, Chun Yuan, Huijun Chen, Xihai Zhao
PURPOSE: To evaluate the feasibility of the Simultaneous Noncontrast Angiography and intraPlaque hemorrhage (SNAP) technique in identification of carotid plaque surface characteristics compared with the conventional multicontrast vessel wall imaging protocol. MATERIALS AND METHODS: Thirty symptomatic patients with carotid plaque were recruited and underwent carotid artery magnetic resonance imaging (MRI) (3.0T) using a conventional multicontrast protocol and SNAP sequence...
August 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28722267/simultaneous-bright-and-black-blood-whole-heart-mri-for-noncontrast-enhanced-coronary-lumen-and-thrombus-visualization
#7
Giulia Ginami, Radhouene Neji, Alkystis Phinikaridou, John Whitaker, René M Botnar, Claudia Prieto
PURPOSE: To develop a 3D whole-heart Bright-blood and black-blOOd phase SensiTive (BOOST) inversion recovery sequence for simultaneous noncontrast enhanced coronary lumen and thrombus/hemorrhage visualization. METHODS: The proposed sequence alternates the acquisition of two bright-blood datasets preceded by different preparatory pulses to obtain variations in blood/myocardium contrast, which then are combined in a phase-sensitive inversion recovery (PSIR)-like reconstruction to obtain a third, coregistered, black-blood dataset...
July 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28681479/enhancement-of-automated-blood-flow-estimates-enable-from-arterial-spin-labeled-mri
#8
Zahra Shirzadi, Bojana Stefanovic, Michael A Chappell, Joel Ramirez, Graeme Schwindt, Mario Masellis, Sandra E Black, Bradley J MacIntosh
PURPOSE: To validate a multiparametric automated algorithm-ENhancement of Automated Blood fLow Estimates (ENABLE)-that identifies useful and poor arterial spin-labeled (ASL) difference images in multiple postlabeling delay (PLD) acquisitions and thereby improve clinical ASL. MATERIALS AND METHODS: ENABLE is a sort/check algorithm that uses a linear combination of ASL quality features. ENABLE uses simulations to determine quality weighting factors based on an unconstrained nonlinear optimization...
July 6, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28679324/breath-hold-black-blood-t1rho-mapping-improves-liver-t1rho-quantification-in-healthy-volunteers
#9
Yì Xiáng J Wáng, Min Deng, Gladys G Lo, Dong Liang, Jing Yuan, Weitian Chen
Background Recent researches suggest that T1rho may be a non-invasive and quantitative technique for detecting and grading liver fibrosis. Purpose To compare a multi-breath-hold bright-blood fast gradient echo (GRE) imaging and a single breath-hold single-shot fast spin echo (FSE) imaging with black-blood effect for liver parenchyma T1rho measurement and to study liver physiological T1rho value in healthy volunteers. Material and Methods The institutional Ethics Committee approved this study. 28 healthy participants (18 men, 10 women; age = 29...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28653214/three-dimensional-black-blood-multi-contrast-carotid-imaging-using-compressed-sensing-a-repeatability-study
#10
Jianmin Yuan, Ammara Usman, Scott A Reid, Kevin F King, Andrew J Patterson, Jonathan H Gillard, Martin J Graves
OBJECTIVE: The purpose of this work is to evaluate the repeatability of a compressed sensing (CS) accelerated multi-contrast carotid protocol at 3 T. MATERIALS AND METHODS: Twelve volunteers and eight patients with carotid disease were scanned on a 3 T MRI scanner using a CS accelerated 3-D black-blood multi-contrast protocol which comprises T 1w, T 2w and PDw without CS, and with a CS factor of 1.5 and 2.0. The volunteers were scanned twice, the lumen/wall area and wall thickness were measured for each scan...
June 26, 2017: Magma
https://www.readbyqxmd.com/read/28629953/3d-black-blood-mr-angiography-of-the-carotid-arteries-a-simple-sequence-for-plaque-hemorrhage-and-stenosis-evaluation
#11
Monica Sigovan, Clément Bidet, Sébastien Bros, Loic Boussel, Laura Mechtouff, Philip M Robson, Zahi A Fayad, Antoine Millon, Philippe Douek
OBJECTIVES: To evaluate the diagnostic performance of a new three-dimensional T1-weighted turbo-spin-echo sequence (3D T1-w TSE) compared to 3D contrast-enhanced angiography (CE-MRA) for stenosis measurement and compared to 2D T1-w TSE for intra-plaque hemorrhage (IPH) detection. METHODS: Eighty three patients underwent carotid MRI, using a new elliptic-centric phase encoding T1-weighted 3D TSE sequence in addition to the clinical protocol. Two observers evaluated image quality, presence of flow artifacts, and presence of intra-plaque hemorrhage, and computed the NASCET degree of stenosis for CE-MRA and for the new sequence...
October 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28629561/multi-contrast-and-three-dimensional-assessment-of-the-aortic-wall-using-3t-mri
#12
Thomas Wehrum, Iulius Dragonu, Christoph Strecker, Jürgen Hennig, Andreas Harloff
OBJECTIVES: To develop a 3D-multi-contrast MRI protocol allowing for high resolution imaging of the wall and of atheroma in the thoracic aorta. METHODS: Eleven healthy volunteers and eleven acute stroke patients with aortic plaques detected by TEE underwent MRI at 3T. The MRI-protocol consisted of a T1w-bright-blood, a T2w- and a PDw-black-blood sequence (spatial resolution=1.15mm(3)). Image quality was assessed by two blinded investigators using a 3-point score and intra- and inter-rater agreement was tested...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28626998/large-coverage-black-bright-blood-interleaved-imaging-sequence-labbi-for-3d-dynamic-contrast-enhanced-mri-of-vessel-wall
#13
Haikun Qi, Feng Huang, Zechen Zhou, Peter Koken, Niranjan Balu, Bida Zhang, Chun Yuan, Huijun Chen
PURPOSE: To propose a large coverage black-bright blood interleaved imaging sequence (LaBBI) for 3D dynamic contrast-enhanced MRI (DCE-MRI) of the vessel wall. METHODS: LaBBI consists of a 3D black-blood stack-of-stars golden angle radial acquisition with high spatial resolution for vessel wall imaging and a 2D bright-blood Cartesian acquisition with high temporal resolution for arterial input function estimation. The two acquisitions were performed in an interleaved fashion within a single scan...
June 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28619834/temporal-and-spatial-variances-in-arterial-spin-labeling-are-inversely-related-to-large-artery-blood-velocity
#14
A D Robertson, G Matta, V S Basile, S E Black, C K Macgowan, J A Detre, B J MacIntosh
BACKGROUND AND PURPOSE: The relationship between extracranial large-artery characteristics and arterial spin-labeling MR imaging may influence the quality of arterial spin-labeling-CBF images for older adults with and without vascular pathology. We hypothesized that extracranial arterial blood velocity can explain between-person differences in arterial spin-labeling data systematically across clinical populations. MATERIALS AND METHODS: We performed consecutive pseudocontinuous arterial spin-labeling and phase-contrast MR imaging on 82 individuals (20-88 years of age, 50% women), including healthy young adults, healthy older adults, and older adults with cerebral small vessel disease or chronic stroke infarcts...
August 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28606731/cognitive-function-and-kidney-disease-baseline-data-from-the%C3%A2-systolic-blood-pressure-intervention-trial-sprint
#15
RANDOMIZED CONTROLLED TRIAL
Daniel E Weiner, Sarah A Gaussoin, John Nord, Alexander P Auchus, Gordon J Chelune, Michel Chonchol, Laura Coker, William E Haley, Anthony A Killeen, Paul L Kimmel, Alan J Lerner, Suzanne Oparil, Mohammad G Saklayen, Yelena M Slinin, Clinton B Wright, Jeff D Williamson, Manjula Kurella Tamura
BACKGROUND: Chronic kidney disease is common and is associated with cardiovascular disease, cerebrovascular disease, and cognitive function, although the nature of this relationship remains uncertain. STUDY DESIGN: Cross-sectional cohort using baseline data from the Systolic Blood Pressure Intervention Trial (SPRINT). SETTING & PARTICIPANTS: Participants in SPRINT, a randomized clinical trial of blood pressure targets in older community-dwelling adults with cardiovascular disease, chronic kidney disease, or high cardiovascular disease risk and without diabetes or known stroke, who underwent detailed neurocognitive testing in the cognition substudy, SPRINT-Memory and Cognition in Decreased Hypertension (SPRINT-MIND)...
September 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28562565/perivascular-epithelial-cell-tumor-pecoma-of-the-pancreas-a-case-report-and-review-of-literature
#16
REVIEW
Shuisheng Zhang, Fang Chen, Xiaozhun Huang, Qinglong Jiang, Yajie Zhao, Yingtai Chen, Jianwei Zhang, Jie Ma, Wei Yuan, Quan Xu, Jiuda Zhao, Chengfeng Wang
RATIONALE: Perivascular epithelial cell tumors (PEComas) of the pancreas are rare mesenchymal tumors and, to our knowledge, only 20 cases have been reported to date. PATIENT CONCERNS: We report a 43-year-old female who presented with upper abdominal pain for 1 year. She underwent an exploratory laparotomy at a local hospital, which failed to resect the tumor. Five months later, she came to the Chinese National Cancer Center for surgery. Preoperative imaging revealed an 11...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28562205/diameter-of-the-pulmonary-artery-in-relation-to-the-ascending-aorta-association-with-cardiovascular-outcome
#17
Andreas A Kammerlander, Stefan Aschauer, Caroline Zotter-Tufaro, Franz Duca, Klaus Knechtelsdorfer, Matthias Wiesinger, Marianne L Schwaiger, Daniel Dalos, Matthias Schneider, Beatrice A Marzluf, Diana Bonderman, Julia Mascherbauer
Purpose To investigate whether the pulmonary artery (PA)-to-ascending aorta (Ao) ratio is associated with outcome in unselected patients referred for cardiac magnetic resonance (MR) imaging. Materials and Methods This study prospectively enrolled 650 consecutive patients (47.2% women; mean age, 56.1 years ± 17.7 [standard deviation]). Diameters of PA and Ao were measured in axial black blood images. On the basis of previous results, a PA-to-Ao ratio of 1.0 or greater was chosen as the cutoff for further analysis...
September 2017: Radiology
https://www.readbyqxmd.com/read/28549310/segmentation-of-lumen-and-outer-wall-of-abdominal-aortic-aneurysms-from-3d-black-blood-mri-with-a-registration-based-geodesic-active-contour-model
#18
Yan Wang, Florent Seguro, Evan Kao, Yue Zhang, Farshid Faraji, Chengcheng Zhu, Henrik Haraldsson, Michael Hope, David Saloner, Jing Liu
Segmentation of the geometric morphology of abdominal aortic aneurysm is important for interventional planning. However, the segmentation of both the lumen and the outer wall of aneurysm in magnetic resonance (MR) image remains challenging. This study proposes a registration based segmentation methodology for efficiently segmenting MR images of abdominal aortic aneurysms. The proposed methodology first registers the contrast enhanced MR angiography (CE-MRA) and black-blood MR images, and then uses the Hough transform and geometric active contours to extract the vessel lumen by delineating the inner vessel wall directly from the CE-MRA...
May 19, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28540464/comparison-of-lesion-enhancement-between-bb-cube-and-3d-spgr-images-for-brain-tumors-with-1-5-t-magnetic-resonance-imaging
#19
Hirokazu Hasegawa, Ryuichiro Ashikaga, Kaoru Okajima, Tetsuya Wakayama, Mitsuharu Miyoshi, Yasumasa Nishimura, Takamichi Murakami
PURPOSE: This study aimed to compare the detectability of neoplastic lesion enhancement after gadolinium-based contrast media injection in three-dimensional T1-weighted black blood Cube (3D-T1W BB Cube) and three-dimensional T1-weighted fast spoiled gradient-echo (3D-T1W fast SPGR) images obtained with 1.5-T magnetic resonance imaging (MRI). MATERIALS AND METHODS: Phantom and clinical studies were performed to compare the lesion detectability and contrast ratio (CR) between 3D-T1W BB Cube and 3D-T1W fast SPGR pulse sequences...
August 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28445914/clinical-significance-of-intraluminal-contrast-enhancement-in-patients-with-spontaneous-cervical-artery-dissection-a%C3%A2-black-blood-mri-study
#20
Eva Coppenrath, Olga Lenz, Nora Sommer, Nina Lummel, Jennifer Linn, Karla Treitl, Fabian Bamberg, Maximilian Reiser, Thomas Pfefferkorn, Tobias Saam
Purpose Recent studies have suggested that intraluminal thrombi show contrast enhancement on carotid black-blood T1w MRI. The aim of this study was to evaluate the significance of intraluminal contrast enhancement (iCE) regarding symptom status in patients with spontaneous cervical artery dissection (sCAD). Methods 33 consecutive patients (19 men) with sCAD received a brain MRI (DIFF, T2w, T2*w, FLAIR) and a multi-sequence 3T-MRI with fat-saturated high-resolution black-blood T1w-sequences pre- and post-contrast, contrast-enhanced MR angiography and TOF images of carotid and vertebral arteries...
July 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
keyword
keyword
22716
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"