CT AORTOGRAM THORAX & ABDOMEN

CT Aortogram Thorax & Abdomen Overview

Introduction 

CT Aortogram of the thorax and abdomen offers a comprehensive examination of the entire aorta, from the aortic arch in the chest down to the bifurcation in the abdomen and is done using high resolution contrast imaging. It is frequently utilized for the assessment of aortic aneurysms, dissections, congenital vascular anomalies, and performs postoperative surgical evaluations. 

What is a CT Aortogram Thorax & Abdomen? 

This diagnostic procedure employs CT scanning along with iodinated contrast administered intravenously to obtain precise cross-sectional views of the thorax and abdomen aorta. Furthermore, it allows for three-dimensional reconstruction which aids in precise diagnosis and surgical preparation.

Parameters Considered

• Aortic size and wall integrity 
• Presence of any aneurysm, dissections, or plaques 
• Status of major branch vessels (renal, celiac, SMA, iliac); and 
• Patency of postoperative grafts and stents. 

Reasons for the Test

• Identify vascular abnormality of thoracic or abdominal aorta 
• Monitor known vascular deteriorating conditions 
• Control for surgically or endovascular induced intervention exposed 
• Assess for suspected traumatic vascular injury 

When and Who Needs a CT Aortogram Thorax & Abdomen? 

Indications: 

• Suspected or confirmed thoracoabdominal aortic aneurysm 
• Aortic dissection or intramural hematoma 
• Congenital vascular anomalies (eg: coarctation) 
• Evaluation after trauma to the chest/abdomen 
• Pre surgical aorta and its branches mapping 

Patient Demographics 

• Patients complaining of chest, back and abdominal pain with suspected vascular origin 
• Patients with familial syndromes such as Marfan or Loeys-Dietz 
• Post-surgery patients with aortic grafts or endogenous stents 
• Patients with trauma injuries 

Benefits of Taking the Test

• Comprehensive, systematic evaluation of the entire aorta within a very short time. 
• Non-invasive procedures with rapid image capture. 
• Highly accurate 3D renderings for surgical planning model. 
• Critical resource for emergencies such as ruptures or dissections. 

Conditions Diagnosed

• Thoracic and abdominal aortic aneurysms. 
• Intramural hematomas. 
• Congenital vascular anomalies. 
• Post-surgical complications such as endoleaks and graft migration. 
• Aortic dissections of Stanford Type A and B. 

Preparation

• Suggested fasting of 4-6 hours. 
• Regular medications may be taken unless specified otherwise. 
• Notify the radiology department for allergies as well as renal conditions. 

Pre-requisites 

• Latest renal function assessment through eGFR and creatinine. 
• Contrast consent form. 
• Medical file with relevant documentation, including imaging history if available. 

Best Time to Take the Scan 

• Based on clinical condition and urgency. 
• Preference for a.m. hours for speedy lab and report integration. 

Eligibility 

• Mostly safe for all adults. 
• Warnings for pregnancy and severe kidney dysfunction with contrast dye and allergy. 

Procedure 

• Insert IV line for contrast injection. 
• Position patient supine on CT scanner table. 
• Give instructions for breath-holding for scan. 
• Perform high-speed scan after contrast dye injection. 
• Process images into 3D renderings for analysis. 

Caution 

• Remain still to avoid blurring from motion. 
• Report any problems caused by contrast injection to technician.