Publications
410 results found
Underwood RS, Mohiaddin RH, 1993, Magnetic resonance imaging of atherosclerotic vascular disease., Am J Hypertens, Vol: 6, Pages: 335S-339S, ISSN: 0895-7061
Atherosclerosis is a chronic, progressive, and often widespread arterial disorder in which the morphology and composition of the arterial segments containing atheroma are of considerable importance. Magnetic resonance imaging (MRI) allows non-invasive assessment of early arterial disease without the use of ionizing radiation. Arterial compliance, flow-wave velocity, and the pattern of flow within the aorta may all be disturbed by the disease, but these parameters are all accessible to MRI. In addition, atheroma can be directly imaged. Thus, MRI is valuable not only in the detection of disease, but also in the study of its natural history and the effects of interventions such as the control of risk factors and the use of lipid-lowering agents.
KARWATOWSKI SP, FORBAT SM, MOHIADDIN R, et al., 1993, REGIONAL LEFT-VENTRICULAR LONG AXIS FUNCTION DURING DOBUTAMINE STRESS IN CONTROLS AND PATIENTS WITH ISCHEMIC-HEART-DISEASE PRE AND POST-ANGIOPLASTY, CIRCULATION, Vol: 88, Pages: 83-83, ISSN: 0009-7322
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- Citations: 1
MOHIADDIN RH, LONGMORE DB, 1993, FUNCTIONAL-ASPECTS OF CARDIOVASCULAR NUCLEAR-MAGNETIC-RESONANCE IMAGING - TECHNIQUES AND APPLICATION, CIRCULATION, Vol: 88, Pages: 264-281, ISSN: 0009-7322
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- Citations: 66
KILNER PJ, MANZARA CC, MOHIADDIN RH, et al., 1993, MAGNETIC-RESONANCE JET VELOCITY MAPPING IN MITRAL AND AORTIC-VALVE STENOSIS, CIRCULATION, Vol: 87, Pages: 1239-1248, ISSN: 0009-7322
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- Citations: 115
MOHIADDIN RH, FIRMIN DN, LONGMORE DB, 1993, AGE-RELATED-CHANGES OF HUMAN AORTIC FLOW WAVE VELOCITY MEASURED NONINVASIVELY BY MAGNETIC-RESONANCE-IMAGING, JOURNAL OF APPLIED PHYSIOLOGY, Vol: 74, Pages: 492-497, ISSN: 8750-7587
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- Citations: 147
Nihoyannopoulos P, McKenna WJ, 1993, Hypertrophic Cardiomyopathy, A European Textbook of Cardiac Ultrasound, Editors: Roelandt, Sutherland, Iliceto, Linker, London, Publisher: Churchill Livingstone, Pages: 371-389
MOHIADDIN RH, 1992, MAGNETIC-RESONANCE-IMAGING OF PERIPHERAL VASCULAR-DISEASE - THE STATE OF THE ARTERY, ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES, Vol: 9, Pages: 553-577, ISSN: 0742-2822
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- Citations: 3
MARTINEZ JE, MOHIADDIN RH, KILNER PJ, et al., 1992, OBSTRUCTION IN EXTRACARDIAC VENTRICULOPULMONARY CONDUITS - VALUE OF NUCLEAR-MAGNETIC-RESONANCE IMAGING WITH VELOCITY MAPPING AND DOPPLER ECHOCARDIOGRAPHY, JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, Vol: 20, Pages: 338-344, ISSN: 0735-1097
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- Citations: 53
MOHIADDIN RH, AMANUMA M, LONGMORE DB, 1992, MAGNETIC-RESONANCE MEASUREMENT OF PULMONARY VENOUS FLOW AND DISTENSIBILITY, AMERICAN JOURNAL OF NONINVASIVE CARDIOLOGY, Vol: 6, Pages: 13-18, ISSN: 0258-4425
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- Citations: 2
Mohiaddin R, Yang G, Burger P, et al., 1992, Automatic enhancement, animation, and segmentation of flow in peripheral arteries from MR phase-shift velocity mapping, Journal of computer assisted tomography, Vol: 16, Pages: 176-181
YANG GZ, BURGER P, MOHIADDIN RH, et al., 1992, THE APPLICATION OF RELAXATION LABELING PROCESS TO NMR FLOW IMAGE-ANALYSIS, 4TH INTERNATIONAL CONF ON IMAGE PROCESSING AND ITS APPLICATIONS, Publisher: INST ELECTRICAL ENGINEERS, Pages: 45-48
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- Citations: 1
FIRMIN DN, MOHIADDIN RH, UNDERWOOD SR, et al., 1991, MAGNETIC-RESONANCE-IMAGING - A METHOD FOR THE ASSESSMENT OF CHANGES IN VASCULAR STRUCTURE AND FUNCTION, JOURNAL OF HUMAN HYPERTENSION, Vol: 5, Pages: 31-40, ISSN: 0950-9240
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- Citations: 11
Firmin DN, Mohiaddin RH, Underwood SR, et al., 1991, Magnetic resonance imaging: a method for the assessment of changes in vascular structure and function., J Hum Hypertens, Vol: 5 Suppl 1, Pages: 31-40, ISSN: 0950-9240
A brief review is made of the history of nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). The advantages and disadvantages of MRI are discussed with particular reference to methods of studying the vascular system. Techniques developed to study separately sclerosis and atherosis, the two components of atherosclerotic disease, are discussed in more detail. Finally, in vitro and in vivo results are presented to demonstrate the great wealth of information already available from the NMR signal and hence its considerable potential for the study of vascular disease in the future.
Mohiaddin RH, Sampson C, Firmin DN, et al., 1991, Magnetic resonance morphological, chemical shift and flow imaging in peripheral vascular disease., Eur J Vasc Surg, Vol: 5, Pages: 383-396, ISSN: 0950-821X
We have used magnetic resonance imaging to study the aorto-iliac region in 13 patients with peripheral disease. Five healthy volunteers were studied for comparison. Magnetic resonance spin-echo imaging, chemical shift imaging to determine lipid content of atheroma, phase-shift velocity mapping and quantitative flow studies were obtained and the findings compared with radiological angiograms. The velocity profiles study showed an increased velocity at the site of a stenosis in eight patients who had iliac artery disease. Quantitative flow measurements made in both iliac arteries and the aorta in five patients and five volunteers showed a flow ratio in both iliac arteries less than 0.85 in patients with a stenosis of one iliac artery and a ratio greater than 0.85 in the volunteers. In one patient studied before and after angioplasty, flow improved post-angioplasty. The flow curve showed a characteristic distortion in diseased vessels compared with healthy vessels. In the chemical shift images of aortic atheroma five were classified as fibrous and three were lipid rich. This preliminary study showed the potential of magnetic resonance to assess non-invasively the morphology, composition and the haemodynamic significance of atheroma. This could be important in the study of the progression of peripheral vascular disease and its response to pharmacological and surgical intervention and in the planning treatment of lesions.
MOHIADDIN RH, PAZ R, THEODOROPOULOS S, et al., 1991, MAGNETIC-RESONANCE CHARACTERIZATION OF PULMONARY ARTERIAL BLOOD-FLOW AFTER SINGLE LUNG TRANSPLANTATION, JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol: 101, Pages: 1016-1023, ISSN: 0022-5223
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- Citations: 33
MOHIADDIN R, LONGMORE D, 1991, MAGNETIC-RESONANCE-IMAGING AFTER SINGLE LUNG TRANSPLANTATION - REPLY, JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol: 101, Pages: 1105-1106, ISSN: 0022-5223
MOHIADDIN RH, AMANUMA M, KILNER PJ, et al., 1991, MR PHASE-SHIFT VELOCITY MAPPING OF MITRAL AND PULMONARY VENOUS FLOW, JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, Vol: 15, Pages: 237-243, ISSN: 0363-8715
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- Citations: 56
MOHIADDIN RH, LOWELL DG, UNDERWOOD RS, et al., 1991, DIAGNOSIS OF FEMORAL ARTERIOVENOUS-FISTULA BY MR IMAGING WITH VELOCITY MAPPING, JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, Vol: 15, Pages: 697-699, ISSN: 0363-8715
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- Citations: 4
KILNER PJ, FIRMIN DN, REES RSO, et al., 1991, VALVE AND GREAT VESSEL STENOSIS - ASSESSMENT WITH MR JET VELOCITY MAPPING, RADIOLOGY, Vol: 178, Pages: 229-235, ISSN: 0033-8419
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- Citations: 160
YANG GZ, BURGER P, KILNER PJ, et al., 1991, INVIVO BLOOD-FLOW VISUALIZATION WITH MAGNETIC-RESONANCE-IMAGING, 2ND ANNUAL CONF OF THE IEEE ON VISULIZATION ( VISUALIZATION 91 ), Publisher: I E E E, COMPUTER SOC PRESS, Pages: 202-&
Yang GZ, Burger P, Mohiaddin RH, 1990, In vivo blood flow analysis and animation for magnetic resonance imaging, Pages: 176-182, ISSN: 0277-786X
The accurate quantitative assessment of variations in coronary arterial dimensions and explicit visualization of the flowing blood in vivo is fundamental to early diagnosis of occlusive vascular diseases. In Magnetic Resonance Velocity Imaging the velocity of flow is usually represented by intensity maps of the three spatial components of velocity which are difficult to use for diagnostic purposes. A technique for analysing the in vivo flow in arteries from MR imaging data is presented. This method uses a specific flow related enhancement process to extract and localize the flow field within the image, which is followed by global flow analysis that reveals the underlying oriented structures of the flow field. By animation, our method can provide various ways of visualizing the in vivo flow and its variation towards different vessel structures and lesions. Both lateral and cross-sectional views are animated and video tapes of the operation of the on-line animation package demonstrate the effectiveness of this diagnostic tool.
MOHIADDIN RH, WANN SL, UNDERWOOD R, et al., 1990, VENA-CAVAL FLOW - ASSESSMENT WITH CINE MR VELOCITY MAPPING, RADIOLOGY, Vol: 177, Pages: 537-541, ISSN: 0033-8419
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- Citations: 97
MANZARA CC, MOHIADDIN RH, PENNELL DJ, et al., 1990, MAGNETIC-RESONANCE ASSESSMENT OF THE THORACIC AORTA IN MARFANS-SYNDROME, CIRCULATION, Vol: 82, Pages: 126-126, ISSN: 0009-7322
MOHIADDIN RH, PAZ R, THEODOROPOULOS S, et al., 1990, QUANTITATIVE AND QUALITATIVE ASSESSMENT OF FLOW IN THE PULMONARY-ARTERIES OF PATIENTS WITH SINGLE LUNG TRANSPLANTATION USING MAGNETIC-RESONANCE-IMAGING, CIRCULATION, Vol: 82, Pages: 715-715, ISSN: 0009-7322
MOHIADDIN RH, SCHOSER K, AMANUMA M, et al., 1990, MR IMAGING OF AGE-RELATED DIMENSIONAL CHANGES OF THORACIC AORTA, JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, Vol: 14, Pages: 748-752, ISSN: 0363-8715
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- Citations: 30
MOHIADDIN RH, PAZ R, THEODOROPOLOUS S, et al., 1990, TOTAL AND DIFFERENTIAL BLOOD-FLOW MEASUREMENT IN PULMONARY-ARTERIES OF PATIENTS WITH SINGLE LUNG TRANSPLANTATION - A MAGNETIC-RESONANCE STUDY, BRITISH HEART JOURNAL, Vol: 64, Pages: 72-73, ISSN: 0007-0769
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- Citations: 1
MOHIADDIN RH, AMANUMA M, KILNER PJ, et al., 1990, APPLICATION OF MAGNETIC-RESONANCE VELOCITY MAPPING TO MITRAL AND PULMONARY FLOW OF HEALTHY-VOLUNTEERS, BRITISH HEART JOURNAL, Vol: 64, Pages: 99-99, ISSN: 0007-0769
YANG GZ, BURGER P, MOHIADDIN RH, 1990, INVIVO BLOOD-FLOW ANALYSIS AND ANIMATION FOR MAGNETIC-RESONANCE-IMAGING, CONF ON MEDICAL IMAGING 4 : IMAGE PROCESSING, Publisher: SPIE - INT SOC OPTICAL ENGINEERING, Pages: 176-182
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- Citations: 10
BOGREN HG, KLIPSTEIN RH, MOHIADDIN RH, et al., 1989, PULMONARY-ARTERY DISTENSIBILITY AND BLOOD-FLOW PATTERNS - A MAGNETIC-RESONANCE STUDY OF NORMAL SUBJECTS AND OF PATIENTS WITH PULMONARY ARTERIAL-HYPERTENSION, AMERICAN HEART JOURNAL, Vol: 118, Pages: 990-999, ISSN: 0002-8703
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- Citations: 159
REES S, SOMERVILLE J, WARD C, et al., 1989, COARCTATION OF THE AORTA - MR IMAGING IN LATE POSTOPERATIVE ASSESSMENT, RADIOLOGY, Vol: 173, Pages: 499-502, ISSN: 0033-8419
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- Citations: 92
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