What is cerebral ventriculography?
Definition. Radiography of the ventricular system of the brain after injection of air or other contrast medium directly into the cerebral ventricles. It is used also for x-ray computed tomography of the cerebral ventricles.
What is the purpose of Pneumoencephalography?
pneumoencephalography, technique of diagnostic radiology that produces X-ray films of the head after injection of air or gas between the membranes lining the brain and spinal cord to sharpen the outlines of various brain structures.
Where are the lateral ventricles located?
cerebrum
Each lateral ventricle is a C-shaped cavity located deep within the cerebrum. As the lateral ventricle wraps around the thalamus or the central core of the brain, other structures within the ventricle also assume a C-shaped form: the choroidal fissure, the fornix, the caudate nucleus, and the choroid plexus.
What is a left ventriculography?
Left ventriculography, imaging of the left ventricle with a contrast injection, was one of the first methods of measuring left ventricular function and wall motion and is usually performed at the discretion of the cardiologist during cardiac catheterization (eg, coronary angiography).
What are the parameters set in the injector during Ventriculography?
Ventriculography should continue until the ventricle is clear of contrast. The usual settings of the power injector for left ventriculography are 30–50 mL of contrast dye volume at an injection rate of 12–15 mL/second and gradual flow rate rise over 0.5–1.0 second when a 6-Fr pigtail catheter is used.
How is a cerebral angiogram performed?
In cerebral angiography, a catheter (long, thin, flexible tube) is inserted into an artery in the arm or leg. Using the catheter, a technician injects a special dye into the blood vessels that lead to the brain. It is a way to produce x-ray pictures of the insides of blood vessels.
What does the lateral ventricle in the brain do?
The right and left lateral ventricles are structures within the brain that contain cerebrospinal fluid, a clear, watery fluid that provides cushioning for the brain while also helping to circulate nutrients and remove waste.
What happens if lateral ventricle is enlarged?
Mild enlargement of the lateral ventricles is a structural brain abnormality observed in neuropsychiatric disorders that are thought to be the result of abnormal prenatal brain development, including schizophrenia (1, 2), autism (3), and attention-deficit/hyperactivity disorder(4, 5).
How is left ventriculography performed?
A cardiologist makes a small cut in the area, and inserts a thin flexible tube (catheter) into an artery. Using x-rays as a guide, the doctor carefully moves the thin tube (catheter) into your heart. When the tube is in place, dye is injected through it.
What is the use of performing cardiac ventriculography?
Cardiac ventriculography is a medical imaging test used to determine a person’s heart function in the right, or left ventricle. Cardiac ventriculography involves injecting contrast media into the heart’s ventricle(s) to measure the volume of blood pumped.
Why pigtail catheter is used left ventriculography?
Antegrade left ventriculography The shape is well suited to left ventricular entry from the atria via an atrial septal defect. as both the curve and the pigtail tip deter entry into the pulmonary veins. The pigtail ensures that the side holes do not cause any intramyocardial injection of contrast.
What is cardiac ventriculography?
Cardiac ventriculography is a medical imaging test used to determine a person’s heart function in the right, or left ventricle. Cardiac ventriculography involves injecting contrast media into the heart’s ventricle (s) to measure the volume of blood pumped.
What is the technique of Mr ventriculography?
The technique of MR ventriculography involves the acquisition of T1-weighted sequences after injection of a gadolinium-based contrast agent into the ventricles (MR ventriculography) or into the lumbar subarachnoid space (MR cisternography).
Why perform left ventriculography at the time of cardiac catheterization?
The rationale to perform left ventriculography at the time of cardiac catheterization has been little studied. The technique and frequency of use of left ventriculography vary by geographic regions, institutions, and individuals.
Can CT-ventriculography be used to confirm free passage of cerebrospinal fluid?
In conventional ventriculography used to confirm free passage of cerebrospinal fluid (CSF), bony overprojections often makes it difficult to visualize the contrast medium in the cranio-spinal subarachnoid spaces. CT-ventriculography offers an alternative.
