304 results found
Case
Finger clubbing - cyanotic heart disease (MRI)
Published
20 Jun 2022
83% complete
MRI
Photo
Article
Cardiac MRI
Cardiac MRI consists of using MRI to study heart anatomy, physiology, and pathology.
Advantages
In comparison to other techniques, cardiac MRI offers:
improved soft tissue definition
protocol can be tailored to likely differential diagnoses
a large number of sequences are available
dynamic...
Article
Pericardial agenesis
Pericardial agenesis is a rare condition where there is the absence of the pericardium to varying degrees. If it is only a small portion of the pericardium that is absent it is known as a pericardial defect.
Epidemiology
According to a surgical and pathological series, the prevalence (inclusiv...
Article
Anomalous aortic origin of coronary artery
Anomalous aortic origin of coronary artery (AAOCA) refers to a congenital coronary artery anomaly in which a coronary artery arises from a different coronary sinus.
Terminology
Anomalous origin of the coronary artery arising from the opposite sinus (ACAOS) is a narrower definition and refers t...
Article
Cardiac imaging planes
Cardiac imaging planes are standard orientations for displaying the heart on MRI, CT, SPECT, and PET, similar to those used in echocardiography. The planes are defined in reference to the long axis of the left ventricle, which is the line that connects the ventricular apex to the center of the m...
Article
Congenital pulmonary venolobar syndrome
Congenital pulmonary venolobar syndrome is a condition comprising a rare group of cardiac and pulmonary congenital abnormalities occurring variably in combination. The abnormalities include:
anomalous pulmonary venous drainage
particularly scimitar syndrome with hypogenetic right lung
pulmona...
Article
Heart sign (disambiguation)
The heart is named in a number of radiological signs:
boot-shaped heart in plain radiography of tetralogy of Fallot 1
broken heart sign in CT of incudomalleolar disarticulation 2
earth-heart sign in plain chest radiography of tension pneumomediastinum 3
heart sign in MRI brain of bilateral m...
Article
Temporal resolution
Temporal resolution relates to the duration of time for acquisition of a single frame of a dynamic process, i.e., cine imaging.
Discussion
The concept of temporal resolution is fundamental to cardiac CT and MRI, in which a rapidly beating heart is imaged over the order of milliseconds into mul...
Article
Fetal MRI
Fetal MRI allows for detailed imaging of the developing fetus in utero. Fast sequences are required due to fetal movement 1. Fetal MRI is most commonly utilized when ultrasound findings are equivocal. Fetal anatomy can be evaluated in detail including the brain, upper aerodigestive tract, thorax...
Article
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a type of cardiomyopathy defined by left ventricular hypertrophy which cannot otherwise be explained by another cardiac or systemic disease. It is the leading cause of sudden cardiac death in infants, teenagers, and young adults.
Terminology
Although hypert...
Article
Cardiac curriculum
The cardiac curriculum is one of our curriculum articles and aims to be a collection of articles that represent the core cardiac knowledge.
Definition
Topics pertaining to the heart and pericardium, but excluding the mediastinum (see: chest curriculum) and great vessels (see: vascular curricul...
Article
MRI safety
MRI scanners, although free from potentially cancer-inducing ionizing radiation found in plain radiography and CT, have a host of safety issues which must be taken very seriously. MRI safety can be divided into:
main magnetic field
varying magnetic (gradient) fields
radiofrequency
Main magne...
Case
Arteriovenous malformation of the gluteus
Published
03 Feb 2010
88% complete
DSA (angiography)
Article
Radiation-induced heart disease
Radiation-induced heart disease, also known as radiation cardiotoxicity, describes an uncommon constellation of potential cardiac complications of thoracic radiotherapy.
Epidemiology
The demographics of patients affected by radiation-induced heart disease are those of the underlying condition ...
Article
Late gadolinium enhancement
Late gadolinium enhancement is a technique used in cardiac MRI for cardiac tissue characterization, in particular, the assessment of myocardial scar formation and regional myocardial fibrosis 1-5.
Terminology
Late gadolinium enhancement is also known under the terms ‘late enhancement’ or ‘dela...
Article
Hypertensive heart disease
Hypertensive heart disease (HHD) refers to a condition covering morphological and physiological changes of the heart, the coronary arteries and the aorta.
Epidemiology
Over 1.1 billion people worldwide, one-fourth of all men and one-fifth of all women suffer from hypertension and the condition...
Article
Dilated cardiomyopathy
Dilated cardiomyopathy (DCM) is defined as left ventricular chamber dilation with global or regional systolic dysfunction not sufficiently explained by abnormal loading conditions (such as valvular heart disease, congenital heart disease, hypertension etc.) or coronary artery disease 1-4.
It m...
Article
Heart sign (medulla)
The heart sign, also known as the AirPod sign, is a radiological sign described in bilateral medial medullary ischemic stroke. Bilateral medial medullary stroke is a very rare location for stroke and can occur due to disease of the basilar artery, vertebral arteries, or anterior spinal artery 1,...
Article
Cerebral microhemorrhage
Cerebral microhemorrhages, or cerebral microbleeds, are small focal intracerebral hemorrhages, often only visible on susceptibility-sensitive MRI sequences.
Pathology
Common etiologies
cavernous malformations 1,8
especially Zabramski classification type IV malformations
causes include multi...
Article
Fulminant myocarditis
Fulminant myocarditis refers to an acute, severe form of myocardial inflammation with rapid progression and hemodynamic compromise (low output syndrome or cardiogenic shock) requiring inotropic medications or mechanical circulatory support 1-6.
Epidemiology
Fulminant myocarditis is uncommon 1....
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