CT Angiography Aorta to Foot at Jinnah MRI Lahore

CT Scan Angiography From Arch Of Aorta To Foot at Jinnah MRI Lahore

Computed Tomography (CT) Angiography from the arch of the aorta to the foot, often referred to as a CT Angiogram of the aorta and lower extremities (or CT Runoff), is a highly specialized, non-invasive diagnostic imaging procedure. This advanced scan utilizes ionizing radiation (X-rays) combined with sophisticated computer processing and an intravenous iodinated contrast medium to produce detailed, high-resolution three-dimensional cross-sectional images of the arterial system. The examination begins at the aortic arch in the chest, travels down through the thoracic and abdominal aorta, passes through the iliac bifurcation, and extends down the femoral, popliteal, and tibial arteries all the way to the pedal vessels of the feet. This comprehensive assessment allows vascular specialists and radiologists at Jinnah MRI Lahore to evaluate blood flow, identify structural abnormalities, and diagnose peripheral vascular diseases with exceptional anatomical precision.

By utilizing state-of-the-art multi-detector CT (MDCT) scanners, Jinnah MRI Lahore provides rapid acquisition of images, minimizing motion artifacts and optimizing contrast timing. The primary clinical value of this study lies in its ability to map the entire lower-limb arterial tree during a single, brief breath-hold. It offers a safer, less invasive alternative to traditional catheter-based digital subtraction angiography (DSA) while delivering comparable diagnostic accuracy. Patients in Lahore suffering from chronic limb-threatening ischemia, acute arterial occlusion, or suspected aneurysms benefit significantly from this rapid diagnostic pathway, which directly guides surgical planning, endovascular interventions, or conservative medical management.

Clinical Procedure: What to Expect

Understanding the procedural steps and preparation for a CT Angiography from the arch of the aorta to the foot helps alleviate patient anxiety and ensures the acquisition of high-quality diagnostic images. Because this procedure requires the administration of an intravenous contrast agent, specific safety protocols must be strictly followed by the clinical team at Jinnah MRI Lahore.

Patient Preparation

• Fasting Requirements: Patients are generally instructed to fast (nil by mouth) for 4 to 6 hours prior to the scan to reduce the risk of nausea or aspiration associated with contrast administration. Clear fluids are usually permitted.
• Renal Function Assessment: A recent blood test showing Serum Creatinine and Estimated Glomerular Filtration Rate (eGFR) is mandatory. This ensures the kidneys can safely filter and excrete the iodinated contrast medium.
• Allergy Screening: Patients must inform the staff of any history of allergies, particularly to iodine, contrast media, or shellfish. Pre-medication with corticosteroids and antihistamines may be required for patients with documented mild contrast allergies.
• Medication Review: Patients taking Metformin for diabetes may need to temporarily suspend the medication on the day of the test and for 48 hours afterward, subject to physician guidance and post-procedure renal function checks.
• Hydration: Adequate hydration before and after the procedure is highly recommended to help flush the contrast dye from the kidneys.
• Clothing and Valuables: Patients should wear loose, comfortable clothing. All metallic objects, including jewelry, belts, zippers, and body piercings, must be removed from the scanning area to prevent image artifacts.

During the Procedure

Upon arrival at Jinnah MRI Lahore, the patient is greeted by a registered radiographer. The clinical history is verified, and the patient is asked to sign an informed consent form for contrast administration. An intravenous (IV) cannula is placed, typically in a large vein in the antecubital fossa of the arm, to facilitate the rapid injection of the contrast agent via an automated dual-head power injector.

The patient is positioned supine (lying on their back) on the motorized CT scanner table, with feet pointing toward the gantry. To ensure high-quality imaging, the patient must remain completely still during the scan. The table slowly moves into the circular opening of the CT scanner. A preliminary scout scan is performed to plan the exact imaging volume from the top of the chest (aortic arch) to the toes.

The power injector then administers the iodinated contrast dye at a precise flow rate, followed by a saline flush. As the contrast enters the bloodstream, patients commonly experience a transient warm, flushing sensation throughout their body and a metallic taste in their mouth; this is entirely normal. Using bolus-tracking technology, the CT scanner automatically triggers image acquisition the moment the contrast reaches peak opacification in the thoracic aorta. The actual scanning process takes less than 15 to 20 seconds, during which the patient may be asked to hold their breath briefly. Once the scan is complete, the IV cannula is removed, and the patient is monitored for a short period to ensure there are no immediate adverse reactions to the contrast.

When is a CT Scan Angiography From Arch Of Aorta To Foot Performed?

Peripheral Arterial Disease (PAD) Evaluation

Peripheral Arterial Disease is a common circulatory problem in which narrowed arteries reduce blood flow to the limbs. Physicians request a CT Angiogram from the aorta to the foot to map the location, length, and severity of arterial stenoses or occlusions. This helps in determining whether the patient is a candidate for endovascular balloon angioplasty, stenting, or surgical bypass grafting.

Acute Limb Ischemia Diagnosis

Acute limb ischemia is a medical emergency characterized by a sudden decrease in limb perfusion, threatening viability. It is often caused by an embolism or acute arterial thrombosis. A rapid CT Angiography allows radiologists at Jinnah MRI Lahore to pinpoint the exact site of the blockage, helping vascular surgeons plan immediate revascularization strategies to save the limb.

Intermittent Claudication Assessment

Patients experiencing intermittent claudication—muscle pain, cramping, or fatigue in the calves, thighs, or buttocks brought on by walking and relieved by rest—undergo this scan to identify underlying arterial narrowings. The test helps differentiate vascular claudication from neurogenic claudication caused by spinal stenosis.

Aneurysm Detection and Monitoring

An aneurysm is an abnormal bulging or weakening of an arterial wall. This comprehensive scan is performed to evaluate thoracic or abdominal aortic aneurysms (AAA), as well as peripheral aneurysms (such as femoral or popliteal artery aneurysms). It provides precise measurements of the aneurysm’s diameter, length, and relationship to branching vessels, which is critical for endovascular aneurysm repair (EVAR) planning.

Post-Surgical and Post-Interventional Follow-Up

Following vascular reconstruction, such as peripheral arterial bypass grafting or stent placement, physicians utilize CT Angiography to monitor graft patency, detect complications like restenosis, graft infection, or pseudoaneurysm formation, and ensure long-term treatment success.

What Does a CT Scan Angiography From Arch Of Aorta To Foot Detect?

This comprehensive vascular scan can detect a wide range of acute and chronic pathological conditions affecting the systemic arterial circulation, including:

• Atherosclerotic plaque burden (calcified and non-calcified plaques)
• Arterial stenosis (narrowing of the vessel lumen)
• Complete arterial occlusion (blockage)
• Thoracic and Abdominal Aortic Aeneurysms (AAA)
• Aortic dissection (tear in the inner layer of the aorta)
• Aortic intramural hematoma
• Popliteal artery aneurysms
• Femoral artery aneurysms
• Arterial emboli and acute thrombi
• Fibromuscular dysplasia (FMD)
• Vasculitis (inflammatory blood vessel diseases like Takayasu’s arteritis)
• Arteriovenous malformations (AVMs) and fistulas
• Vascular trauma or lacerations
• Anatomical variants of the aortic arch and lower limb vasculature
• Collateral pathway development
• Popliteal artery entrapment syndrome
• Thoracic outlet syndrome affecting subclavian arteries
• Pseudoaneurysms (false aneurysms)
• Bypass graft stenosis, occlusion, or kinking
• In-stent restenosis
• Extrinsic vascular compression by tumors or musculoskeletal structures
• Active arterial hemorrhage or extravasation
• Arterial calcification scoring (semi-quantitative assessment)
• Peripheral embolization sources
• Diabetic angiopathy changes in distal run-off vessels

Turnaround Time and Report Access at Jinnah MRI Lahore

At Jinnah MRI Lahore, the raw imaging data acquired during the scan is processed using advanced 3D reconstruction software to generate Maximum Intensity Projection (MIP) and Multiplanar Reconstruction (MPR) images. These detailed images are meticulously analyzed by a Consultant Radiologist specializing in cardiovascular imaging.

The final comprehensive diagnostic report, along with high-resolution digital images, is typically compiled and made available within 24 to 48 hours. Patients can collect their physical reports and films directly from the facility, or access their diagnostic reports online through the official portal or designated communication channels provided by Jinnah MRI Lahore, facilitating prompt consultation with their referring vascular specialist.

CT Scan Angiography From Arch Of Aorta To Foot Findings Overview

Structure / Parameter Evaluated	Normal Findings	Possible Abnormal Findings
Aortic Arch & Thoracic Aorta	Normal caliber, smooth walls, no dissection or aneurysmal dilation.	Aneurysm, dissection, intramural hematoma, severe atheromatous plaque.
Abdominal Aorta	Diameter within normal limits (< 3 cm), patent major branches (celiac, SMA, renal).	Abdominal Aortic Aneurysm (AAA), stenosis of renal or mesenteric arteries, mural thrombus.
Iliac Arteries	Symmetric caliber, smooth contours, patent lumens.	Common or internal iliac aneurysms, stenosing atherosclerosis, occlusion.
Femoral & Popliteal Arteries	Continuous contrast opacification, normal caliber, no filling defects.	Superficial femoral artery (SFA) occlusion, popliteal aneurysm, focal stenosis.
Tibial & Peroneal Arteries (Run-off)	Three-vessel run-off to the ankles, patent anterior/posterior tibial and peroneal arteries.	Single-vessel run-off, diffuse calcific disease, complete distal occlusion (common in diabetes).
Pedal Vessels	Patent dorsalis pedis and plantar arteries supplying the foot.	Absent pedal signals, microvascular disease, distal embolization.
Vessel Wall & Lumen	No calcification, normal wall thickness, fully patent lumen.	Eccentric or concentric calcified plaques, soft non-calcified plaques, luminal narrowing.

Note: Diagnostic findings should always be interpreted by a qualified healthcare professional together with the patient’s symptoms, medical history, physical examination, laboratory investigations, previous imaging studies, and other relevant clinical information. Additional investigations or specialist consultation may be recommended depending on the findings.

Why Choose Jinnah MRI Lahore for CT Scan Angiography?

• Experienced Healthcare Professionals: Highly qualified consultant radiologists and certified technologists specializing in high-resolution vascular imaging.
• Patient-Focused Care: Compassionate staff dedicated to ensuring patient comfort, safety, and clear communication throughout the procedure.
• Quality Diagnostic Services: Commitment to delivering highly accurate diagnostic reports that meet international clinical standards.
• Professional Reporting: Detailed anatomical and vascular mapping to assist referring physicians in precise treatment planning.
• Modern Diagnostic Approach: Utilization of advanced multi-detector CT technology to ensure rapid scans and minimal radiation exposure.
• Comfortable Environment: A clean, modern, and patient-friendly facility designed to minimize clinical anxiety.
• Convenient Location: Easily accessible diagnostic center located in the heart of Lahore, Pakistan.
• Commitment to Accurate Diagnosis: Rigorous quality control protocols to ensure excellent contrast enhancement and high-fidelity 3D vascular reconstructions.