Dr. Marc-Antoine Henry – Radiologist | Longueuil, QC

As a skilled Radiologist, Dr. Marc-Antoine Henry interprets medical images and performs image-guided procedures, playing a key role in patient diagnosis and care. Practicing at medical facilities in Longueuil, QC, he supports various clinical departments. He adheres to the standards and ethical practices set by the Collège des médecins du Québec (CMQ) to ensure high-quality, safe, and effective radiological services. Dr. Henry provides comprehensive services in Radiology to patients requiring diagnostic imaging or image-guided procedures, assisting in accurate diagnosis and treatment planning.

Dr. Henry graduated with a Medical Degree in 2016 and holds a specialty certification in Radiology issued on July 1, 2016. He completed extensive post-graduate medical training in Diagnostic and Interventional Radiology, equipping him with the expertise to interpret a wide range of imaging modalities and perform minimally invasive procedures.

His clinical philosophy is centered on delivering clear, accurate, and timely diagnostic information to support optimal patient outcomes. Committed to continuous learning and professional development, Dr. Henry strives to maintain the highest standards of practice in Longueuil. He speaks fluent French, ensuring effective communication with his diverse patient community.

• Magnetic Resonance Imaging (MRI) Interpretation: Specialized analysis and reporting of MRI scans, providing detailed images of soft tissues, brain, spine, joints, abdomen, and pelvis without using ionizing radiation.
• Mammography and Breast Imaging Interpretation: Expert review and reporting of mammograms (including tomosynthesis/3D mammography) and breast ultrasound for cancer screening, diagnosis, and follow-up.
• Bone Densitometry (DEXA) Scan Interpretation: Analyzing DEXA scans to measure bone mineral density, assess osteoporosis risk, and monitor treatment effectiveness.
• Ultrasound Interpretation (Sonography): Evaluation and reporting of diagnostic ultrasound images for assessing organs (e.g., liver, kidneys, thyroid, reproductive organs), blood flow, pregnancies, and musculoskeletal conditions.
• Fluoroscopy Procedure Interpretation: Interpreting real-time X-ray imaging (fluoroscopy) used during procedures like barium studies (GI tract), hysterosalpingograms, or to guide certain injections.

Note: This list provides an overview of common radiology services. Dr. Henry interprets a wide range of medical imaging studies and/or performs procedures as indicated by your referring physician. Specific subspecialty services depend on the physician's focus and training.

All medical imaging services are provided in accordance with the standards of practice set by the Collège des médecins du Québec (CMQ).

Dr. Henry's practice is primarily based at the Hôpital Pierre-Boucher, located in the Vieux-Longueuil (Longueuil West) neighborhood of Longueuil. The facility offers convenient access via the Jacques Cartier Bridge, Pont Victoria, and nearby Place Longueuil. Patients can easily reach the hospital using the Réseau de transport de Longueuil (RTL) bus services. The hospital premises are wheelchair accessible. Parking is available at the facility, providing ease of access for patients attending appointments.

Are imaging studies interpreted by Dr. Henry covered by Régie de l'assurance maladie du Québec (RAMQ) in QC?

Medically necessary diagnostic imaging studies interpreted by a Radiologist like Dr. Henry are typically covered by Régie de l'assurance maladie du Québec (RAMQ) in QC when prescribed by your referring physician and performed at an accredited medical facility. Some advanced or specialized interventional procedures may also be covered. It's always best to confirm specific coverage details with Régie de l'assurance maladie du Québec (RAMQ) or the imaging clinic/hospital.

Do I need a referral from my doctor to have an imaging study interpreted by Dr. Henry?

Yes, almost all diagnostic imaging tests (like X-rays, CT, MRI, ultrasounds) and interventional radiology procedures require a formal request or requisition from your family doctor, specialist, or other authorized healthcare provider. Dr. Henry provides expert interpretation of these physician-ordered studies.

Is there general preparation needed before an imaging appointment?

Preparation varies significantly based on the type of imaging test. Some require fasting for several hours, others may need you to drink water for a full bladder, or avoid certain medications. You will receive specific instructions from the clinic or hospital when your appointment is scheduled. It's very important to follow these instructions carefully to ensure the quality of your exam and your safety.

Why might I need an injection of 'contrast' or 'dye' for my scan?

Contrast material (often called 'dye', though it's usually clear) is a special substance that can be injected intravenously (or sometimes taken orally or rectally) to help certain organs, blood vessels, or tissues stand out more clearly on imaging exams like CT or MRI. It can help Dr. Henry see abnormalities that might otherwise be hidden. Not all scans require contrast; it's used when it can provide important additional diagnostic information.

How long will my imaging test take?

The duration depends on the type of scan. A simple X-ray might take only a few minutes. Ultrasounds can range from 15 to 45 minutes. CT scans are usually quick once you're positioned (actual scan time is often under a minute), but total appointment time can be longer. MRI scans are typically the longest, often 30 to 60 minutes or more per body part being imaged.

What's the difference between an MRI and a CT scan?

Both are advanced imaging tests, but they use different technologies. CT (Computed Tomography) scans use X-rays and a computer to create detailed cross-sectional images; they are excellent for bone, lungs, abdomen, and detecting acute bleeding. MRI (Magnetic Resonance Imaging) uses a powerful magnetic field and radio waves to create highly detailed images of soft tissues like the brain, spine, joints, and internal organs, without using ionizing radiation. Dr. Henry or your referring doctor will determine which test is best for your specific medical question.

Hôpital Pierre-Boucher
1333 boulevard Jaques Cartier est
Longueuil, QC J4M 2A5

Phone: (418) 668-1010

The facility is wheelchair accessible.

Dr. Henry is a licensed physician regulated by the Collège des médecins du Québec (CMQ) under the Medical Act in QC. Imaging services are typically provided based on referrals from other physicians.

Verify registration with the Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=16640