Magnetic Resonance Imaging (MRI)
Magnetic Resonance Imaging (MRI) can be used to evaluate almost any part of the body. The hospital MRI unit is a General Electric 1.5 High Field Tesla Signa Imaging System. The examination is safe and painless and there is no radiation. However, because MRI uses a strong magnetic field to create an image, some patients – such as those with pacemakers or some implants or implanted devices – cannot have an MRI.
Cat Scan (CT)
Our CT scanners are the GE LightSpeed Ultra 16 and VCT 64 slice, which can scan up to 64 slices in less than one second. With the new state-of-the-art 64- slice scanner, sharp, high-resolution, sub-millimeter slices are produced in a single, short breath-hold. For the patient, our new CT scanner is more comfortable, faster, provides better diagnoses, less exposure to radiation and in many cases reduces the need for an invasive diagnostic procedure. Radiologists can also combine the slices into 3-D color images that enable them to get a more accurate picture of the internal anatomy. They can then see areas from different vantage points, which is especially beneficial if surgery may be required.
CT Angiograms can be used for the diagnosis of several serious conditions. They can examine the aorta to determine if an aneurysm is present and the lower extremities to detect any blockages of vessels or blood clots. The CT Angiograms can also be used with a fast injection of IV contrast dye to determine if the patient has a pulmonary embolism — a blockage of the pulmonary arteries of the lungs.
Calcium Scoring Test:
CT scans are used to determine if there are areas of hardening (calcium plaque) in the coronary arteries. The test is comfortable for the patient and does not require contrast injection. A “calcium score” is obtained, which helps assess the risk of heart disease. This is incorporated with other clinical information and provides the patient with a chance to make lifestyle changes or take other steps toward early intervention to counteract arteriosclerosis.
CT Scan Assessment for Lung Nodules:
A low dose CT scan can be done to screen people at high risk for developing lung cancer (especially smokers) or to closely monitor and follow up on lung nodules found previously on Chest x-rays or CT scans. This assessment can detect the slightest change in a nodule.
An interventional radiologist (one who performs both diagnostic and therapeutic procedures related to interventional radiology) performs minimally invasive, targeted procedures using imaging techniques. The ability to view arteries, veins or other tubular structures enables the interventional radiologist to thread tiny catheters and miniature instruments through vessels to the site of disease or injury and effectively and safely perform diagnostic and treatment procedures. Often, the catheter’s initial entry is in the wrist, from where it is guided into the artery and on to the destination for treatment.
Interventional radiology (IR) was developed approximately 40 years ago and continues to evolve, with the ongoing introduction of new treatments for a rapidly expanding array of conditions that once required open surgery.
Interventional radiology may be used for diagnosis of blood vessel abnormalities and duct blockages as well as for taking biopsies from any organ. Pain management treatments via IR include kyphoplasty for vertebral compression fractures, nerve blocks, percutaneous blocks and epidurals. Interventional radiology can be used in treating a broad array of conditions, from gastrointestinal to obstetric, for port placement or to replace a catheter, to heal wounds or treat varicose veins with laser ablation.
Patients undergoing interventional radiology procedures experience less pain than with open surgeries. The procedures are generally performed on an outpatient basis with most patients going home the same day. Interventional radiology procedures are appropriate for patients of any age – including elderly people who are not candidates for traditional surgery.
Angiography or Interventional Suite
Angiography is a diagnostic radiology exam that obtains images within a blood vessel. It is used to detect and evaluate narrow areas, blockages, aneurysms, or other possible problems with blood vessels that affect blood flow. Previously, angiogram pictures were produced on conventional X-ray film, but the current system allows them to be stored and viewed as digital images, which can be readily transmitted electronically. Interventional radiologists use angiography to perform procedures such as angioplasty, in which a balloon is introduced to open up blockages. Other procedures performed by interventional radiologists using angiography include: dissolving or removing blood clots, managing fibroid tumors, inserting feeding tubes, and relieving pressure around the kidney or liver so that stones can be removed endoscopically.
Vein ablation, Sclerotherapy and Tumor Ablation treatment are also offered in our Interventional Suite.
Breast Imaging services
Digital Mammography is available at the Breast Imaging Center at the hospital as well at at Phelps Radiology in Croton and Phelps Radiology in Dobbs Ferry.
Digital Mammography complements other diagnostic services that aid in the early detection of breast cancer. This revolutionary imaging technology provides incredibly sharp images.
Digital Mammography uses a special detector to capture and convert x-ray energy into a digital image. The radiologist can view and manipulate the digital images on high resolution computer monitors that enhance visualization of the structures within the breast tissue. They can also adjust the brightness and contrast as well as zoom in on specific areas of interest to help detect small calcifications, masses, and other changes that may be early signs of cancer.
To supplement this technology, Phelps has incorporated digital Computer Aided Detection (CAD). This software flags abnormalities to help the radiologist detect early signs of breast cancer. In essence, CAD is a second set of eyes to support and enhance the radiologist’s diagnosis.
While digital mammography is still one of the most advanced technologies available today, it is only a 2-dimensional picture of the breast. The breast is a 3-dimensional object composed of different structures, such as blood vessels, milk ducts, fat, and ligaments. 3D mammography (also known as breast tomosynthesis) is the latest technology in breast imaging that uses computer technology to convert digital breast images into a stack of very thin layers or “slices”– building what is essentially a “3-dimensional mammogram” that allows doctors to examine your breast tissue one layer at a time.
Supplementing your regular 2D screening mammogram with 3D mammography requires additional exposure to radiation however a very low dose of radiation is used for both 3D and 2D images, so your total dose, although higher than a 2D mammogram is still below the FDA breast imaging guidelines. Using 2D mammography together with 3D mammography for screening exams has been shown to increase sensitivity in detecting cancer by up to 40% and to significantly reduce the need to return for additional views by 20-40%.
Currently 3D Mammography is only covered by some insurance companies. However, if your insurance does not cover this exam we offer it to screening patients for an out of pocket cost.
3D Mammography is available at the Breast Imaging Center at the hospital as well as at Phelps Radiology in Croton-on-Hudson and Phelps Radiology in Dobbs Ferry.
Phelps also offers state-of-the-art ABUS and Digital Mammography systems. We were the first hospital in the U.S. to install the GE Invenia Automated Breast Ultrasound System (ABUS). It was developed by GE Healthcare for more accurate breast cancer diagnosis in women with dense breast tissue. The system has been proven to help clinicians find 35.7% more cancers in women with dense breasts than mammography alone.
In addition to our new equipment, Phelps also utilizes CAD (Computer Aided Detection) software, which works in conjunction with our digital mammography units, flags abnormalities during the mammography interpretation to help the radiologist detect early signs of breast cancer. In essence, CAD is a second set of eyes to support and enhance the radiologist’s diagnosis.
Mammography, Stereotactic, and Ultrasound-Guided Localizations and Biopsy services as well as preventative care are offered in the Breast Imaging Center, which has been designated a Breast Imaging Center of Excellence by the American College of Radiology (ACR) for many years.
Bone Densitometry is the leading diagnostic tool for osteoporosis. Osteoporosis is characterized by low bone mass and deterioration of the bone tissue, which leads to an increased fracture risk. The Bone Mineral Density test is simple, quick and painless. Daytime and evening appointments are available. The tests are conducted in the Breast Center.
Bone Density screenings are available at the Breast Imaging Center, Phelps Radiology at Croton and Phelps Radiology at Dobbs Ferry.
Ultrasound imaging, which is also referred to as sonography, obtains images of the human body through the use of high-frequency sound waves. The sound waves are reflected and absorbed to varying degrees depending upon the types of tissue through which they pass. The reflected sound waves are used to produce imaging on a monitor. Ultrasound can be used to examine nearly every part of the body. Since the images are generated in real time, they can be used to show the structure and movements of internal organs, muscles, and other structures. Ultrasound Imaging even enables the radiologist to see blood flowing through vessels in the body. Breast Ultrasound is also offered to our patients.
Real time imaging with ultrasound is also used as a guide during biopsies and some interventional procedures – making them faster, safer, and more accurate than the same procedures performed without sonographic guidance.
Ultrasound is available at the Breast Imaging Center, Phelps Radiology at Croton and Phelps Radiology at Dobbs Ferry.
Uses very small amounts of radioactive isotopes which are injected into the body and traced with specialized equipment. This equipment includes a computer, which is used to study heart function in both resting and stress conditions. Other tests, such as bone scans and thyroid scans are done in the nuclear medicine department.
PMHC offers state-of-the-art digital x-ray services. The use of digital x-ray has replaced traditional x-ray methods for several key reasons. The advantages of digital x-ray include reduced exam times, reduced patient exposure to radiation and the ability to digitally transfer and enhance images.
Diagnostic X-Ray is available at the Breast Imaging Center, Phelps Radiology at Croton and Phelps Radiology at Dobbs Ferry.