{"id":21555,"date":"2025-01-21T19:56:34","date_gmt":"2025-01-21T19:56:34","guid":{"rendered":"https:\/\/kingscollegehospitaldubai.com\/?post_type=service&#038;p=21555"},"modified":"2026-04-23T08:15:59","modified_gmt":"2026-04-23T08:15:59","slug":"mr-guided-breast-biopsy","status":"publish","type":"service","link":"https:\/\/kingscollegehospitaldubai.com\/ar\/service\/breast-health-clinic\/mr-guided-breast-biopsy\/","title":{"rendered":"MR-GUIDED BREAST BIOPSY"},"content":{"rendered":"<p><img height=\"2560\" width=\"2560\" decoding=\"async\" style=\"max-width: 170px;\" src=\"https:\/\/kingscollegehospitaldubai.com\/wp-content\/uploads\/2026\/04\/COEBT-Seal-scaled.png\"><br \/>\n&nbsp;<br \/>\n<span style=\"font-weight: 400;\">Magnetic resonance- or MR-guided breast biopsy uses a powerful magnetic field, radio waves and a computer to help locate a breast lump or abnormality and guide a needle to remove a tissue sample for examination under a microscope. It does not use ionizing radiation and leaves little to no scarring.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Physical, mammography, and other exams often detect lumps or abnormalities in the breast. However, these tests cannot always tell whether a growth is\u00a0\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezNBOEI5OTMxLUFCQ0YtNDM0OC04MDY2LTQwQ0MzQUM3RDQzNX0=\"><b>benign<\/b><\/a><span style=\"font-weight: 400;\">\u00a0or cancerous.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Doctors use breast biopsy to remove a small amount of tissue from a suspicious area for lab analysis. The doctor may perform a biopsy surgically. More commonly, a radiologist will use a less invasive procedure that involves a hollow needle and image-guidance. Image-guided needle biopsy does not remove the entire lesion. Instead, it obtains a small sample of the abnormality for further analysis.<\/span><\/p>\n<p><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezVDNDhGOUUwLUQzNUQtNDk0RS1CMDI2LUU5MUY0MUEzMjg3MX0=\"><b>Image-guided biopsy<\/b><\/a><span style=\"font-weight: 400;\">\u00a0uses ultrasound, MRI, or mammography imaging guidance to take samples of an abnormality.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In MRI-guided breast biopsy,\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0RCRUZCRjZGLTA5RkEtNDE3NC1BMjgyLTg0REU3RDczMTNBRX0=\"><b>magnetic resonance imaging<\/b><\/a><span style=\"font-weight: 400;\">\u00a0is used to help guide the\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezVFNTlDMDYwLTAzQUItNEVGOS1BNUU3LUUyMEU2OThEMTcwQn0=\"><b>radiologist&#8217;s<\/b><\/a><span style=\"font-weight: 400;\">\u00a0instruments to the site of the abnormal growth.<\/span><\/p>\n<h2>What are some common uses of the procedure?<\/h2>\n<p><span style=\"font-weight: 400;\">An MRI-guided breast biopsy is most helpful when MR imaging shows a breast abnormality such as:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">a suspicious mass not identified by other imaging techniques<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">an area of distortion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">an area of abnormal tissue change<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Doctors use MRI guidance in\u00a0\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezREMDYyQkU2LTNDNDItNDMzNS05NjdELURDQkZGODNFRUEwRn0=\"><b>biopsy<\/b><\/a><span style=\"font-weight: 400;\">\u00a0procedures that use:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezYzMDAwREE3LTZEODktNEM0QS05NUY5LTFFMTNGQzAzMEY3MH0=\"><b>vacuum-assisted device<\/b><\/a><span style=\"font-weight: 400;\">\u00a0(VAD), which uses a vacuum powered instrument to collect multiple tissue samples during one needle insertion.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezIxRDZFNkRDLUREQTQtNEQxQi04NjU4LTJBMzlDNTY3QTBDRX0=\"><b>wire localization<\/b><\/a><span style=\"font-weight: 400;\">, in which a guide wire is placed into the suspicious area to help the surgeon locate the lesion for\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezREMDYyQkU2LTNDNDItNDMzNS05NjdELURDQkZGODNFRUEwRn0=\"><b>surgical biopsy<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<h2>How should I prepare?<\/h2>\n<p><span style=\"font-weight: 400;\">You will need to change into a hospital gown. This is to prevent artifacts appearing on the final images and to comply with safety regulations related to the strong magnetic field.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Guidelines about eating and drinking before an MRI vary between specific exams and facilities. Take food and medications as usual unless your doctor tells you otherwise.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some MRI exams use an injection of contrast material. The doctor may ask if you have asthma or allergies to contrast material, drugs, food, or the environment. MRI exams commonly use a contrast material called\u00a0 <\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezYzN0FDOTU2LUM0Q0EtNDJCOC1CMzJDLTZEQjNEM0NFMDA0MX0=\"><b>gadolinium<\/b><\/a><span style=\"font-weight: 400;\">.\u00a0Doctors can use gadolinium in patients who are allergic to iodine contrast. A patient is much less likely to be allergic to gadolinium than to iodine contrast. However, even if the patient has a known allergy to gadolinium, it may be possible to use it after appropriate pre-medication.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tell the technologist or radiologist if you have any serious health problems or recent surgeries. Some conditions, such as severe kidney disease, may mean that you cannot safely receive gadolinium. You may need a blood test to confirm your kidneys are functioning normally.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Women should always tell their doctor and technologist if they are pregnant. MRI has been used since the 1980s with no reports of any ill effects on pregnant women or their unborn babies. However, the baby will be in a strong magnetic field. Therefore, pregnant women should not have an MRI in the first trimester unless the benefit of the exam clearly outweighs any potential risks. Pregnant women should not receive gadolinium contrast unless absolutely necessary.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Prior to a needle biopsy, tell your doctor about all the medications you take, including herbal supplements. List any allergies, especially to\u00a0\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezI5NDE5NkE2LUM4OEItNDMxNS05RUQ2LTQ4RkE0NTZCMTRFMn0=\"><b>anesthesia<\/b><\/a><span style=\"font-weight: 400;\">. Your doctor may advise you to stop taking aspirin, blood thinners, or certain herbal supplements three to five days before your procedure. This will help decrease your risk of bleeding.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Also, inform your doctor about recent illnesses or other medical conditions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You may want to have someone drive you home afterward, especially if you receive sedation.<\/span><\/p>\n<h2>What does the equipment look like?<\/h2>\n<p><span style=\"font-weight: 400;\">The traditional MRI unit is a large cylinder-shaped tube surrounded by a circular magnet. You will lie on a table that slides into a tunnel towards the center of the magnet.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MRI-guided breast biopsies are performed in closed MRI systems with a specially modified exam table. This moveable examination table allows your breasts to hang freely into cushioned openings, which contain wire coils that send and receive radio waves to help create the MR images.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The procedure will use one of these instruments:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A vacuum-assisted device (VAD), a vacuum-powered instrument that uses pressure to pull tissue into the needle.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A thin guide wire, which is used for a surgical biopsy.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This procedure may use other sterile equipment, including syringes, sponges, forceps, scalpels and a specimen cup or microscope slide.<\/span><\/p>\n<h2>How does the procedure work?<\/h2>\n<p><span style=\"font-weight: 400;\">Unlike x-ray and computed tomography (CT) exams, MRI does not use radiation. Instead, radio waves re-align hydrogen atoms that naturally exist within the body. This does not cause any chemical changes in the tissues. As the hydrogen atoms return to their usual alignment, they emit different amounts of energy depending on the type of tissue they are in. The scanner captures this energy and creates a picture using this information.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In most MRI units, the magnetic field is produced by passing an electric current through wire coils. Other coils are inside the machine and, in some cases, are placed around the part of the body being imaged. These coils send and receive radio waves, producing signals that are detected by the machine. The electric current does not come into contact with the patient.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A computer processes the signals and creates a series of images, each of which shows a thin slice of the body. The radiologist can study these images from different angles.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MRI is often able to tell the difference between diseased tissue and normal tissue better than x-ray, CT, and ultrasound.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Using MRI guidance to calculate the position of the abnormal tissue and to verify the placement of the needle, the radiologist inserts the biopsy needle through the skin, advances it into the\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0I3RUE2ODIzLUU1QTQtNDRGNi1BRDBDLTgwQzhBRjRCRDY4Q30=\"><b>lesion<\/b><\/a><span style=\"font-weight: 400;\">\u00a0and removes tissue samples. If a surgical biopsy is being performed, MRI may be used to guide a wire into the mass to help the surgeon locate the area for\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezIwN0Y4RDEwLTI1NkEtNEJBNi1BMUQ5LUVERjcxMTEyOTZDOH0=\"><b>excision<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2>How is the procedure performed?<\/h2>\n<p><span style=\"font-weight: 400;\">Image-guided, minimally invasive procedures such as MR-guided breast biopsies are most often performed by a specially trained breast radiologist.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Breast biopsies are usually done on an outpatient basis.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In most cases, you will lie face down on a moveable exam table. The doctor will position the affected breast into an opening in the table.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A nurse will insert an\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0ZDMzNFOEY0LTIwRDktNDMxMy1BOTFDLTY5NEY2Q0E0N0U1Q30=\"><b>intravenous<\/b><\/a><span style=\"font-weight: 400;\">\u00a0(IV) line into a vein in your hand or arm and the contrast material\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezYzN0FDOTU2LUM0Q0EtNDJCOC1CMzJDLTZEQjNEM0NFMDA0MX0=\"><b>gadolinium<\/b><\/a><span style=\"font-weight: 400;\">\u00a0will be given intravenously.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Your breast will be gently compressed between two compression plates (similar to those used in a diagnostic MRI exam), one of which is marked with a grid structure. Using computer software, the radiologist measures the position of the lesion with respect to the grid and calculates the position and depth of the needle placement.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The doctor will inject a local anesthetic into the skin and more deeply into the breast to numb it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The doctor will make a very small nick in the skin at the site where they will insert the biopsy needle.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The radiologist then inserts the needle, advances it to the location of the abnormality and MR imaging is performed to verify its position. Depending on the type of MRI unit being used, you may remain in place or be moved out of the center or\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezRDMzE4QkRCLTc3NkUtNEI4Qy1CNjIzLTRGRjZDRjM0RTNFNn0=\"><b>bore<\/b><\/a><span style=\"font-weight: 400;\">\u00a0of the MRI scanner.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The doctor removes tissue samples using a\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezYzMDAwREE3LTZEODktNEM0QS05NUY5LTFFMTNGQzAzMEY3MH0=\"><b>vacuum-assisted device<\/b><\/a><span style=\"font-weight: 400;\">\u00a0(VAD). Vacuum pressure pulls tissue from the breast through the needle into the sampling chamber. Without withdrawing and reinserting the needle, it rotates positions and collects additional samples. Typically, the doctor will collect eight to 10 samples of tissue from around the lesion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">After this sampling, the doctor will remove the needle.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If a\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezREMDYyQkU2LTNDNDItNDMzNS05NjdELURDQkZGODNFRUEwRn0=\"><b>surgical biopsy<\/b><\/a><span style=\"font-weight: 400;\">\u00a0is to be performed, the doctor will insert a wire into the suspicious area as a guide for the surgeon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The doctor may place a small marker at the biopsy site so they can locate it in the future if necessary.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Once the biopsy is complete, the doctor or nurse will apply pressure to stop any bleeding. They will cover the opening in the skin with a dressing. No sutures are needed.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The doctor may use mammography to confirm that the marker is in the correct position.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This procedure is usually completed within 45 minutes.<\/span><\/p>\n<h2>What will I experience during and after the procedure?<\/h2>\n<p><span style=\"font-weight: 400;\">You will be awake during your biopsy and should have little discomfort. Many women report little pain and no scarring on the breast. However, certain patients, including those with dense breast tissue or abnormalities near the chest wall or behind the nipple, may be more sensitive during the procedure.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some women find that the major discomfort of the procedure is from lying on their stomach for the length of the procedure. Strategically placed cushions can ease this discomfort.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When you receive the local anesthetic to numb the skin, you will feel a pin prick from the needle followed by a mild stinging sensation from the local anesthetic. You will likely feel some pressure when the doctor inserts the biopsy needle and during tissue sampling. This is normal.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The area will become numb within a few seconds.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You must remain very still while the doctor performs the imaging and the biopsy.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As tissue samples are taken, you may hear clicks or buzzing sounds from the sampling instrument. These are normal.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you experience swelling and bruising following your biopsy, your doctor may tell you to take an over-the-counter pain reliever and to use a cold pack. Temporary bruising is normal.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Call your doctor if you experience excessive swelling, bleeding, drainage, redness, or heat in the breast.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If a marker is left inside the breast to mark the location of the biopsied lesion, it will cause no pain, disfigurement, or harm. Biopsy markers are MRI compatible and will not cause metal detectors to alarm.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Avoid strenuous activity for at least 24 hours after the biopsy. Your doctor will outline more detailed post-procedure care instructions for you.<\/span><\/p>\n<h2>Who interprets the results and how do I get them?<\/h2>\n<p><span style=\"font-weight: 400;\">A\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0I2NTdCOTM0LTNGN0MtNEI4Mi04N0NCLTBBRkY4OENGMENBQn0=\"><b>pathologist<\/b><\/a><span style=\"font-weight: 400;\">\u00a0examines the removed specimen and makes a final diagnosis. Your <\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezZBODgxQ0Q3LUI5QkUtNDBFMC1BM0I3LUM5RTc0RDk1NkQ1N30=\"><b>referring physician<\/b><\/a><span style=\"font-weight: 400;\">\u00a0will share the results with you. The radiologist will also evaluate the results of the biopsy to make sure that the pathology and image findings explain one another. In some instances, even if cancer is not diagnosed, surgical removal of the entire biopsy site and imaging abnormality may be recommended if the pathology does not match the imaging findings.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You may need a follow-up exam. If so, your doctor will explain why. Sometimes a follow-up exam further evaluates a potential issue with more views or a special imaging technique. It may also see if there has been any change in an issue over time. Follow-up exams are often the best way to see if treatment is working or if a problem needs attention.<\/span><\/p>\n<h2>What are the benefits vs. risks?<\/h2>\n<p><b>Benefits<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The procedure is less invasive than surgical biopsy, leaves little or no scarring, and can be performed in less than an hour.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MRI is a noninvasive imaging technique that does not involve exposure to radiation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MRI-guided breast biopsy using a\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezk5MjUzRDMyLTY1RjEtNDU5MS05QzMwLTNDRDBFMThCNTNFMH0=\"><b>core needle<\/b><\/a><span style=\"font-weight: 400;\">\u00a0is considered both safe and accurate.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The speed, accuracy and safety of MRI-guided\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezYzMDAwREE3LTZEODktNEM0QS05NUY5LTFFMTNGQzAzMEY3MH0=\"><b>vacuum-assisted<\/b><\/a><span style=\"font-weight: 400;\">\u00a0breast biopsy are as good as MR-guided\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezIxRDZFNkRDLUREQTQtNEQxQi04NjU4LTJBMzlDNTY3QTBDRX0=\"><b>wire localization<\/b><\/a><span style=\"font-weight: 400;\">\u00a0without the associated complications and cost of surgery.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MRI-guided biopsy does not use\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0E1NTYzNjRFLTIzNUYtNEExMy1BMDU4LUM0RjM3RTBGMzQ4RX0=\"><b>ionizing radiation<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MRI-guided breast biopsy takes less time than surgical biopsy, causes less tissue damage, and is less costly.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recovery time is brief and patients can soon resume their usual activities.\u00a0<\/span><\/li>\n<\/ul>\n<h2>Risks<\/h2>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is a risk of bleeding and forming a\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0E0RDU4RjRELTY4RTQtNDBGNi04QzNFLTRDRkEwNTlBMDk4Mn0=\"><b>hematoma<\/b><\/a><span style=\"font-weight: 400;\">, or a collection of blood at the biopsy site. The risk, however, appears to be less than one percent of patients.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An occasional patient has significant discomfort, which can be readily controlled by non-prescription pain medication.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Any procedure where the skin is penetrated carries a risk of infection. The chance of infection requiring antibiotic treatment appears to be less than one in 1,000.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Depending on the type of biopsy or the design of the biopsy machine, a biopsy of tissue located deep within the breast carries a slight risk that the needle will pass through the chest wall. This could allow air around the lung and cause the lung to collapse. This is extremely rare.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is a small chance that this procedure will not provide the final answer to explain the imaging abnormality.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">IV contrast manufacturers indicate mothers should not breastfeed their babies for 24-48 hours after contrast material is given. However, the most recent American College of Radiology (ACR) Manual on Contrast Media reports that studies show the amount of contrast absorbed by the infant during breastfeeding is extremely low.<\/span><\/li>\n<\/ul>\n<p><b>What are the limitations of MRI-Guided Breast Biopsy?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">MRI-guided tissue sampling is limited by the position of the abnormality in the breast. Breast lesions located in the extreme posterior region of the breast or small abnormalities can be difficult or impossible to accurately target using MR.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Breast biopsy procedures will occasionally miss a lesion or underestimate the extent of disease present. If the diagnosis remains uncertain after a technically successful procedure,\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=ezREMDYyQkU2LTNDNDItNDMzNS05NjdELURDQkZGODNFRUEwRn0=\"><b>surgical biopsy<\/b><\/a><span style=\"font-weight: 400;\">\u00a0will usually be necessary.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The MR-guided breast biopsy method cannot be used unless the mass can be seen on an MRI exam. Calcifications within a cancerous\u00a0\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0YxNUJBQkI5LTU5MTYtNDVGNy05NjAxLTQwNjQ4Mjk4QTNGNX0=\"><b>nodule<\/b><\/a><span style=\"font-weight: 400;\">\u00a0are not seen on Breast MRI. Therefore, it may be difficult to accurately target small lesions during MR-guided breast biopsy.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The widespread use of this technique is limited by its high cost, availability, and length of the procedure. MR-guided biopsy should not be considered if the lesion can be seen on\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0Y0MkFEODFCLUQwOTQtNDA1OC1BRDNCLUYwM0U0RDNENjM5RH0=\"><b>mammography<\/b><\/a><span style=\"font-weight: 400;\">\u00a0or on\u00a0<\/span><a href=\"https:\/\/www.radiologyinfo.org\/en\/glossary?modal=1&amp;id=e0MxMTEzQUJFLUZFNjgtNDZFOS05RDU3LUQyNjQwRjg3MTg0N30=\"><b>ultrasound<\/b><\/a><span style=\"font-weight: 400;\">, where the biopsy can be performed more easily with less patient discomfort. In those cases, stereotactic biopsy or ultrasound-guided biopsy are the more appropriate methods of tissue sampling.<\/span><\/p>\n","protected":false},"featured_media":0,"parent":2693,"menu_order":0,"template":"","service-category":[],"class_list":["post-21555","service","type-service","status-publish","hentry"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Magnetic resonance- or MR-guided breast biopsy uses a powerful magnetic field, radio waves and a computer to help locate a breast lump or abnormality and guide a needle to remove a tissue sample for examination under a microscope. It does not use ionizing radiation and leaves little to no scarring. 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