Related Experiment Video

Updated: Oct 2, 2026

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
06:59

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Published on: June 3, 2018

Three-dimensional time-of-flight MR angiography in the evaluation of cerebral aneurysms

R J Sevick1, J S Tsuruda, P Schmalbrock

  • 1Department of Radiology, University of California, San Francisco 94143-0628.

Journal of Computer Assisted Tomography
|November 1, 1990
PubMed

Insights

Three-dimensional (3D) time-of-flight (TOF) magnetic resonance angiography (MRA) effectively detects intracranial aneurysms. Combining MRA with spin echo MR provides adequate assessment, aiding screening and follow-up.

Area of Science:

  • Medical Imaging
  • Neuroradiology
  • Vascular Imaging

Background:

  • Intracranial aneurysms pose significant health risks.
  • Accurate diagnostic imaging is crucial for detection and management.
  • Three-dimensional (3D) time-of-flight (TOF) magnetic resonance angiography (MRA) is a developing technique for vascular assessment.

Purpose of the Study:

  • To evaluate the preliminary experience with 3D TOF MRA for assessing intra- and extracranial aneurysms.
  • To compare MRA findings with conventional angiography and spin echo MR.
  • To identify limitations and benefits of 3D TOF MRA in aneurysm detection.

Main Methods:

  • Retrospective review of six patients with aneurysms (five intracranial, one cervical carotid pseudoaneurysm).
  • Utilized a 3D rephased gradient recalled echo pulse sequence and maximum intensity projection (MIP) reconstruction.
  • Compared MRA with spin echo MR and conventional angiography regarding vessel visualization, aneurysm depiction, and artifacts.

Main Results:

  • All aneurysms were successfully detected using MRA.
  • Excellent anatomical correlation was observed between MRA and conventional angiography.
  • Identified limitations include loss of small vessel visualization, intraluminal signal loss in large vessels, and artifact issues with MIP reconstructions.

Conclusions:

  • 3D TOF MRA, combined with T1-weighted spin echo images, offers adequate assessment of aneurysms.
  • Comprehensive review of all MRA components is necessary for accurate interpretation.
  • MRA shows potential for screening asymptomatic patients and follow-up of treated aneurysms.

More Related Videos

Three-Dimensional Printing of a Complex Aortic Anomaly03:40

Three-Dimensional Printing of a Complex Aortic Anomaly

Published on: November 1, 2018

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging09:32

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...