Myocardial perfusion and function by MR imaging techniques

1996 ◽  
pp. 485-497
Author(s):  
Albert de Roos ◽  
Ernst E. van der Wall ◽  
Rob van der Geest ◽  
Johan H. C. Reiber
Keyword(s):  
Myocardial Perfusion ◽  
Mr Imaging ◽  
Imaging Techniques ◽  
And Function

Coronary Artery Disease: Combined Stress MR Imaging Protocol—One-Stop Evaluation of Myocardial Perfusion and Function

Radiology ◽  
2000 ◽  
Vol 215 (2) ◽  
pp. 608-614 ◽  
Author(s):  
Penelope R. Sensky ◽  
Asvina Jivan ◽  
Norah M. Hudson ◽  
Richard P. Keal ◽  
Bruno Morgan ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Myocardial Perfusion ◽  
Mr Imaging ◽  
Combined Stress ◽  
Imaging Protocol ◽  
One Stop ◽  
Artery Disease ◽  
And Function

Integration Between Computed Tomography and Nuclear Medicine for Non-invasive Assessment of Coronary Anatomy and Myocardial Perfusion

2009 ◽  
Vol 5 (2) ◽  
pp. 15
Author(s):  
Wanda Acampa ◽  
Mario Petretta ◽  
Carmela Nappi ◽  
Alberto Cuocolo ◽  
◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Myocardial Perfusion ◽  
Myocardial Blood Flow ◽  
Imaging Techniques ◽  
Emission Computed Tomography ◽  
Coronary Anatomy ◽  
Non Invasive

Many non-invasive imaging techniques are available for the evaluation of patients with known or suspected coronary heart disease. Among these, computed-tomography-based techniques allow the quantification of coronary atherosclerotic calcium and non-invasive imaging of coronary arteries, whereas nuclear cardiology is the most widely used non-invasive approach for the assessment of myocardial perfusion. The available single-photon-emission computed tomography flow agents are characterised by a cardiac uptake proportional to myocardial blood flow. In addition, different positron emission tomography tracers may be used for the quantitative measurement of myocardial blood flow and coronary flow reserve. Extensive research is being performed in the development of non-invasive coronary angiography and myocardial perfusion imaging using cardiac magnetic resonance. Finally, new multimodality imaging systems have recently been developed bringing together anatomical and functional information. This article provides a description of the available non-invasive imaging techniques in the assessment of coronary anatomy and myocardial perfusion in patients with known or suspected coronary heart disease.

scholarly journals Simultaneous 13N-Ammonia and gadolinium first-pass myocardial perfusion with quantitative hybrid PET-MR imaging: a phantom and clinical feasibility study

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Muhummad Sohaib Nazir ◽  
Sarah-May Gould ◽  
Xenios Milidonis ◽  
Eliana Reyes ◽  
Tevfik F. Ismail ◽  
...  
Keyword(s):  
Myocardial Perfusion ◽  
Mr Imaging ◽  
Feasibility Study ◽  
First Pass

GLENOHUMERAL INSTABILITIES AND THE ROLE OF MR IMAGING TECHNIQUES

1997 ◽  
Vol 5 (4) ◽  
pp. 767-785
Author(s):  
Jeffrey Minkoff ◽  
Steven Stecker ◽  
Gregg Cavaliere
Keyword(s):  
Mr Imaging ◽  
Imaging Techniques

MR IMAGING VERSUS ALTERNATIVE IMAGING TECHNIQUES

1995 ◽  
Vol 3 (4) ◽  
pp. 591-608 ◽  
Author(s):  
Juerg Hodler ◽  
Joseph S. Yu ◽  
Hans C. Steinert ◽  
Donald Resnick
Keyword(s):  
Mr Imaging ◽  
Imaging Techniques

Normal ageing and the brain

1998 ◽  
Vol 15 (1) ◽  
pp. 26-28
Author(s):  
CS Breathnach
Keyword(s):  
Cerebral Cortex ◽  
Imaging Techniques ◽  
Structure And Function ◽  
Ageing Population ◽  
Cell Shrinkage ◽  
Ageing Processes ◽  
Normal Ageing ◽  
And Function ◽  
Ageing Brain ◽  
The Brain

AbstractInterest in the psychiatric aspects of old age predated the institution of geriatrics as a clinical discipline, but the systematic study of the ageing brain only began in the second half of this century when an ageing population presented a global numerical challenge to society. In the senescent cerebral cortex, though the number of neurons is not reduced, cell shrinkage results in synaptic impoverishment with consequent cognitive impairment. Recent advances in imaging techniques, combined with burgeoning knowledge of neurobiological structure and function, have increased our understanding of the ageing processes in the human brain and permit an optimistic approach in the application of the newer insights into neuropsychology and geriatric psychiatry.

Clinical Stage I Carcinoma of the Uterine Cervix Value of Preoperative Magnetic Resonance Imaging in Assessing Parametrial Invasion

2002 ◽  
Vol 88 (4) ◽  
pp. 291-295 ◽  
Author(s):  
Sandro Sironi ◽  
Massimo Bellomi ◽  
Gaetano Villa ◽  
Silvia Rossi ◽  
Alessandro Del Maschio
Keyword(s):  
Cervical Cancer ◽  
Mr Imaging ◽  
Tumor Invasion ◽  
Early Stage ◽  
Imaging Techniques ◽  
Clinical Stage ◽  
Fast Spin Echo ◽  
Parametrial Invasion ◽  
Early Stage Cervical Cancer ◽  
T2 Weighted Images

Aims and Background The purpose of this prospective study was to assess the efficacy of different MR imaging techniques in the evaluation of parametrial tumor invasion in patients with early stage cervical cancer. Methods A total of 73 consecutive patients, clinically considered to have invasive tumor (<3 cm in diameter) confined to the cervix, underwent MR imaging studies at 1 T, according to the following protocol: fast spin-echo (FSE) T2-weighted, gadolinium-enhanced SE T1-weighted, and fat-suppressed gadolinium-enhanced SE T1-weighted sequences. Images obtained with each sequence were evaluated for parametrial invasion with the use of histopathologic findings as the standard of reference. Results In the assessment of tumor infiltration of the parametrium, with FSE T2-weighted images accuracy was 83%, with SE T1-weighted gadolinium-enhanced images was 65%, and with SE T1-weighted gadolinium-enhanced fat-suppressed images was 72%. The difference between the accuracy rate achieved with FSE T2-weighted images and those obtained with the other two MR sequences was statistically significant (P <0.05). The high negative predictive value (95%) for the exclusion of parametrial tumor invasion was the principal contributor to the staging accuracy obtained with FSE T2-weighted imaging. Conclusions Unenhanced FSE T2-weighted imaging is a reliable method for determining the degree of tumor invasion in patients with early stage cervical cancer. Our data suggest that contrast-enhanced sequences, even with the use of the fat suppression technique, have limited value in assessing tumor extension.

Skin‐ny deeping: Uncovering immune cell behavior and function through imaging techniques*

2021 ◽  
Author(s):  
Yingrou Tan ◽  
Hong Liang Tey ◽  
Shu Zhen Chong ◽  
Lai Guan Ng
Keyword(s):  
Immune Cell ◽  
Imaging Techniques ◽  
Cell Behavior ◽  
And Function

Respiratory muscle imaging by ultrasound and MRI in neuromuscular disorders

2021 ◽  
pp. 2100137
Author(s):  
Jeroen L.M. van Doorn ◽  
Francesca Pennati ◽  
Hendrik H.G. Hansen ◽  
Baziel G.M. van Engelen ◽  
Andrea Aliverti ◽  
...  
Keyword(s):  
Respiratory Muscle ◽  
Imaging Techniques ◽  
Neuromuscular Disorders ◽  
Respiratory Muscles ◽  
Daily Practice ◽  
Structure And Function ◽  
Muscle Structure ◽  
Respiratory Management ◽  
Technological Developments ◽  
And Function

Respiratory muscle weakness is common in neuromuscular disorders and leads to significant respiratory difficulties. Therefore, reliable and easy assessment of respiratory muscle structure and function in neuromuscular disorders is crucial. In the last decade, ultrasound and MRI emerged as promising imaging techniques to assess respiratory muscle structure and function. Respiratory muscle imaging directly measures the respiratory muscles and, in contrast to pulmonary function testing, is independent of patient effort. This makes respiratory muscle imaging suitable to use as tool in clinical respiratory management and as outcome parameter in upcoming drug trials for neuromuscular disorders, particularly in children. In this narrative review, we discuss the latest studies and technological developments in imaging of the respiratory muscles by US and MR, and its clinical application and limitations. We aim to increase understanding of respiratory muscle imaging and facilitate its use as outcome measure in daily practice and clinical trials.

Tumoural portal vein thrombosis

1997 ◽  
Vol 38 (5) ◽  
pp. 655-659
Author(s):  
L. Marti-Bonmati ◽  
E. Lonjedo ◽  
D. Mathieu ◽  
C. Coffin ◽  
C. Poyatos ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Portal Vein ◽  
Imaging Techniques ◽  
Vena Cava ◽  
Tumour Thrombus ◽  
Vein Thrombosis ◽  
Significant Difference ◽  
Before And After ◽  
Portal Veins ◽  
Cellular Carcinoma

Purpose: Intrahepatic thrombus is usually associated with either cirrhosis or hepato-cellular carcinoma (HCC). Most HCCs enhance after the administration of MnDPDP (Teslascan). Our objective was to analyze the enhancement characteristics of tumour portal vein thrombi. Material and Methods: Thrombi affecting the main or segmental portal veins (17 cases) and the suprahepatic inferior vena cava (1 case) were retrospectively selected from a series of 128 patients studied with MR imaging before and after the administration of MnDPDP. Enhancement was assessed qualitatively and quantitatively. Results: All tumour thrombi enhanced after MnDPDP administration. The enhancement was more conspicuous in the GRE images. On the quantitative evaluation, the portal thrombus enhancement was greater for GRE images than SE images. Portal thrombi enhanced more than the liver and the HCCs. There was a significant difference between the enhancement of the HCCs and the thrombi with both MR imaging techniques. Conclusion: The greater enhancement of the tumour thrombus associated with the liver and HCC may suggest that other mechanisms, apart from accumulation of the contrast medium within the hepatocytes inside the thrombi, are involved in thrombus enhancement.

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