

|
|
Physical examination If the doctor suspects a diagnosis of liver cancer, he or she will check the patient's history for risk factors and pay close attention to the condition of the patient's abdomen during the physical examination. Masses or lumps...
|
|
|
When a diagnosis of primary liver cancer is suspected, the physician will scrutinize the patient's history for risk factors and pay close attention to the condition of the abdomen during the physical examination . Masses or lumps in the liver and ...
|
|
|
If the doctor suspects a diagnosis of liver cancer, he or she will check the patient's history for risk factors and pay close attention to the condition of the patient's abdomen during the physical examination. Masses or lumps in the liver and asc...
|
|
If the doctor suspects a diagnosis of liver cancer, he or she will check the patient's history for risk factors and pay close attention to the condition of the patient's abdomen during the physical examination. Masses or lumps in the liver and asc...
|
|
During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with ha...
|
|
The health status of populations and of individuals is assessed for many reasons. Assessing needs for care helps guide the allocation of resources— diagnostic assessments guide treatment, prognostic assessments contribute to planning, and as...
|
![]() |
Alpha fetoprotein (AFP) is a protein normally produced by the liver and yolk sac of a fetus. AFP levels decrease soon after birth. AFP probably has no normal function in adults. A test can be done to measure the amount of AFP in your blood. See al...
|
|
The alpha-fetoprotein(AFP) test is a blood test that is performed during pregnancy. This screening test measures the level of AFP in the mother''s blood and indicates the probability that the fetus has one of several serious birth defects.
|
|
The alpha-fetoprotein(AFP) test is a blood test that is performed during pregnancy to screen the fetus for certain conditions; it is also used to screen for certain diseases in infants and children. The screening test measures the level of AFP in ...
|
|
The Alpha Fetoprotein(AFP) Test is a commonly used prenatal test to monitor the level of AFP—a possible indicator of developmental abnormalities—in the liver of a fetus during high-risk pregnancies. The protein is obtained either throu...
|
|
Detailed information on alpha-fetoprotein testing Alpha-fetoprotein screening is a blood test that measures the level of alpha-fetoprotein in the mothers' blood during pregnancy. AFP is a protein normally produced by the fetal liver and is present in the fluid surrounding the fetus (amniotic fluid), and crosses the placenta into the mother's blood. The AFP blood test is also called MSAFP (maternal serum AFP).
|
|
It can show whether your fetus has signs of some birth defects. This test is done between weeks 15 and 20 of pregnancy.
|
![]() |
An abdominal CT scan is an imaging method that uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography. See also: CT scan
|
|
|
Cytology is the examination of individual cells and small clusters of cells, and may be used for the diagnosis and screening of diseases, including cancers. Cytology can also be referred to as cytopathology.Diagnostic tests are used to detect a di...
|
|
Tumor markers are a group of proteins, hormones, enzymes, receptors, and other cellular products that are overexpressed(produced in higher than normal amounts) by malignant cells. Tumor markers are usually normal cellular constituents that are pre...
|
![]() |
Ultrasound involves the use of high-frequency sound waves to create images of organs and systems within the body.
|
|
Ultrasonography is a diagnostic technique that involves directing high frequency sound waves at tissues in the body to generate images of anatomical structures. Ultrasonography is also called sonography, diagnostic sonography, and echocardiography...
|
|
Detailed information on ultrasonograpy, also called sonography including information on how the procedure is performed
|
|
Detailed information on ultrasound and the potential risks and benefits An ultrasound scan is a diagnostic technique which uses high-frequency sound
waves to create an image of the internal organs. A screening ultrasound is sometimes done during the course of a pregnancy to monitor normal fetal growth and verify the due date. Ultrasounds may be performed at various times throughout pregnancy for different reasons:
|
|
A thyroid ultrasound, or sonogram, is a diagnostic imaging technique used to evaluate the structure of the thyroid gland. The thyroid is an endocrine gland, which means that it releases its secretions directly into the bloodstream or lymph.
|
|
My Ob/Gyn said they found fluid in the baby's kidneys during my 20-week ultrasound, so I have to have a level 2 ultrasound done. What does this mean?
|
|
Since diagnostic sonography utilizes a nonionizing form of energy, there are no known bioeffects. Thus, diagnostic sonography is applied to a large spectrum of clinical disorders, including obstetrical, gynecological, abdominal, urologic, pediatri...
|
|
Ultrasonography is the study of internal organs or blood vessels using high-frequency sound waves. The actual test is called an ultrasound scan or sonogram.
|
|
|
Diagnostic medical sonography, or ultrasound, is a technique using high frequency sound to create images of specific areas of the body to diagnose various pathologies. The diagnostic medical sonographer performs examinations, records anatomic cond...
|
![]() |
Magnetic resonance imaging (MRI) is a noninvasive way to take pictures of the body. Unlike x-rays and computed tomographic (CT) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet. The magneti...
|
|
Cardiac nuclear imaging is also called a "perfusion scan.” A radioactive tracer is delivered into the bloodstream. Then a camera scans the tracer in the blood as it flows through the heart muscle.
|
|
New MRI machines and new techniques result in images that show prostate cancer in much greater detail, allowing biopsies to be targeted more precisely, and thus cancer staging can be more accurate as well.
|
|
Detailed information on magnetic resonance imaging, including how the image is performed and what happens following the procedure
|
|
Magnetic resonance imaging (MRI) is a test that lets your doctor see detailed pictures of the inside of your body. MRI combines the use of strong magnets and radio waves to form an MRI image.
|
|
Studies have found that MRI tests used in addition to mammography detected more cancers in women at high risk for breast cancer. Women at average risk would not necessarily benefit from the additional testing.
|
|
When I had an MRI of my knee, I was told the test was dangerous for people who have metal devices in their bodies. Since then, I developed angina and my cardiologist put in a metal stent. If I need an MRI in the future, will I be able to get one?
|
|
A Harvard Medical School physician answers your question about the safety of MRIs for those who have stents.
|
|
Persons with pacemakers cannot get an MRI because it conflicts with the pacemaker's function. Future pacemakers will likely be made MRI-safe, but this will probably take at least several more years.
|
|
Is a regular MRI more accurate then an open MRI?
Diana Post, M.D., is an assistant professor of medicine at Harvard Medical School and a member of the Department of Medicine at Brigham and Women's Hospital.
|
|
For women at high genetic risk, adding MRI screening to mammography may improve early detection of breast cancer.
|
|
How safe is it for a baby who is 6 months old to have an MRI?
Claire McCarthy, M.D., is a senior medical editor for Harvard Health Publications. She is an instructor in pediatrics at Harvard Medical School, an attending physician at Children's Hospital of Boston, and co-director of the pediatrics department at Martha Eliot Health Center, a neighborhood health service of Children's Hospital. The author of two books, "Learning How the Heart Beats" and "Everyone's Children", Dr. McCarthy was a regular columnist for "Sesame Street Parents Magazine" from 1995 to 1998 and is currently a contributing editor for "Parenting Magazine".
|
|
Magnetic resonance imaging(MRI) is a unique and versatile medical imaging modality. Doctors can obtain highly refined images of the body''s interior using MRI.
|
|
|
Magnetic resonance imaging(MRI) scanners rely on the principles of atomic nuclear-spin resonance. Using strong magnetic fields and radio waves, MRI collects and correlates deflections caused by atoms into images.
|
|
|
Magnetic resonance imaging(MRI) is one of the newest diagnostic medical imaging technologies that uses strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body to generate a visible image. In the field of ...
|
|
|
Magnetic resonance imaging(MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body''s interior without surgery, using MRI.
|
|
|
Magnetic resonance imaging(MRI) is a diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy.MRI is used to visualize the body to assist doctors in their efforts to diagnose certain di...
|
|
|
Magnetic resonance imaging(MRI) is one of the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body''s interior without surgery using MRI.
|
|
In some cases, chemical agents such as gadolinium can be injected to improve the contrast between healthy and diseased tissue.A single MRI exposure produces a two-dimensional image of a slice through the entire target area. A series of these image...
|
|
Detailed information on magnetic resonance imaging (MRI), including information on how the procedure is performed
|
|
People with certain kinds of pacemakers or ICDs can safely undergo an MRI, as long as a series of safety precautions is carefully followed.
|
![]() |
A computed tomography (CT) scan is an imaging method that uses x-rays to create cross-sectional pictures of the body. See also: Cranial CT scan; Lumbosacral spine CT scan; Orbit CT scan; Thoracic CT scan.
|
|
Computed tomography (CT) is a test that combines x-rays and computer scans. The result is a detailed picture that can show problems with soft tissues (such as the lining of your sinuses), organs (such as your kidneys or lungs), and bones.
|
|
Detailed information on ultrafast computed tomography scans, also called ultrafast CT scan or ultrafast CAT scan, including information on how the procedure is performed
|
|
Detailed information on CT scan, including how the CT scan is performed and what happens after the procedure
|
|
Detailed information on computed tomography scans, also called CT scan or CAT scan, including information on how the procedure is performed
|
|
Detailed information on ultrafast computed tomography (CT) scan, including reasons for the procedure, risks of the procedure, what to expect, and discharge instructions
|
|
|
Computed tomography(CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.CT scans are used to image a wide variety of body structu...
|
|
|
Computed tomography scanning, also called CT scan, CAT scan, or computerized axial tomography, is a diagnostic tool that provides views of internal body structures using x rays. In the field of mental health, a CT scan may be used when a patient s...
|
|
|
Computed tomography(CT), formerly referred to as computerized axial tomography(CAT), is a common diagnostic imaging procedure that uses x rays to generate images(slices) of the anatomy.Computed tomography(CT) is an x-ray imaging procedure used for...
|
|
|
Computed tomography(CT) scanning is a valuable diagnostic tool that provides physicians with views of internal body structures. During a CT scan, multiple x rays are passed through the body, producing cross-sectional images, or"slices," on a catho...
|
|
|
Computed tomography(also known as CT, CT scan, CAT, or computerized axial tomography) scans use x rays to produce precise cross-sectional images of anatomical structures.With the development of modern computers, the scans enhanced digital capabili...
|
|
What is the difference between a pelvic CT scan and an abdominal CT scan?
|
|
Is there an alternative to iodine as a contrast medium in a CT scan?
|
|
A biopsy is the removal of a small piece of tissue for laboratory examination.
|
|
A biopsy describes the procedure that is used to obtain a very small piece of the target tissue. For some tissues, like the lining of the cheek, cells can be obtained just by scrapping the tissue surface.
|
|
Detailed information on biopsy, including the most common types of biopsy such as endoscopic biopsy, bone marrow biopsy, excisional biopsy, incisional biopsy, fine needle aspiration biopsy, punch biopsy, shave biopsy, and skin biopsy
|
|
|
Biopsy is a diagnostic procedure in which a piece of tissue and/or cells are removed to be examined under a microscope by a pathologist.Biopsies are performed to determine the presence of cancer cells, establish tumor grading, and provide more inf...
|
|
Detailed information on several of the different divisions of anatomical pathology, including biopsy, surgical pathology, cytology, and autopsy
|
|
A biopsy is a small sample of tissue or fluid taken from the body. This sample can then be studied in a laboratory. Image-guided biopsy allows a sample to be taken from an abnormal mass without the need for surgery. This procedure is done by a specially trained doctor called an interventional radiologist.
|
|
What type of biopsy will I have? Why do I need a biopsy? How long will it take?
|
|
Detailed information on biopsy and the biopsy report For many health problems, a diagnosis is made by removing a sample of tissue for study in the pathology laboratory. The biopsy report describes the findings of a specimen.
|
|
Most biopsies involve taking a small piece of skin or muscle under a local anesthetic. When the cells to be analyzed are accessible by needle, the biopsy specimen may be removed with a hollow aspiration needle, which is used to suck out the sample...
|
|
A liver biopsy is a special procedure that's safe and quick. It can help your doctor assess the health of the liver.
|
![]() |
Common tests that are used to evaluate liver function include: Albumin; Alpha-1 antitrypsin; ALP; ALT; AST; Gamma-glutamyl transpeptidase (GGT; Prothrombin time; Serum bilirubin; Urine bilirubin. Please see individual tests for details on how each...
|
|
Liver function tests, or LFTs, include tests for bilirubin, a breakdown product of hemoglobin, and ammonia, a protein byproduct that is normally converted into urea by the liver before being excreted by the kidneys. LFTs also commonly include test...
|
|
Detailed information on the most common liver function tests, including serum bilirubin test, serum albumin test, serum alkaline phosphatase test, serum aminotransferases, prothrombin time test, alanine transaminase test, aspartate transaminase test, gamm
|
|
Liver function tests, or LFTs, include tests that are routinely measured in all clinical laboratories. LFTs include bilirubin, a compound formed by the breakdown of hemoglobin; ammonia, a breakdown product of protein that is normally converted int...
|
|
Liver function tests, or LFTs, include tests that are routinely measured in all clinical laboratories. LFTs include bilirubin, a compound formed by the catabolism of hemoglobin; ammonia, a product of protein catabolism that is normally converted i...
|
![]() |
A complete blood count (CBC) test measures the following: The number of red blood cells (RBCs; The number of white blood cells (WBCs; The total amount of hemoglobin in the blood; The fraction of the blood composed of red blood cells (hematocrit; T...
|
|
|
One of the most commonly ordered clinical laboratory tests, a blood count, also called a complete blood count(CBC), is a basic evaluation of the cells(red blood cells, white blood cells, and platelets) suspended in the liquid part of the blood(pla...
|
|
|
A complete blood count(CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell(RBC) count, white blood cell(WBC) count, and platelet count...
|
|
A complete blood count(CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood. It consists of the following tests: red blood cell(RBC) count, white blood cell(WBC) count, and platelet count...
|
|
The clinical laboratory test that evaluates the three main cellular components of peripheral blood(red cells, white cells, and platelets) is called the"complete blood count"(CBC). It is used commonly to assess whether a patient is anemic(low red c...
|
|
AST (aspartate aminotransferase) is an enzyme found in high amounts in heart muscle and liver and skeletal muscle cells. It is also found in lesser amounts in other tissues. This article discusses the test to measure the amount of AST in the blood.
|
|
The Aspartate aminotransferase test measures levels of AST, an enzyme released into the blood when certain organs or tissues, particularly the liver and heart, are injured. Aspartate aminotransferase(AST) is also known as serum glutamic oxaloaceti...
|
![]() |
A chest x-ray is an x-ray of the chest, lungs, heart, large arteries, ribs, and diaphragm.
|
|
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs, heart, small portions of the gastrointestinal tract, thyroid gland and the bones of the chest ar...
|
|
Detailed information on chest x-rays, including reasons for the procedure X-rays are made by using low levels of external radiation to produce images of the body, the organs, and other internal structures for diagnostic purposes. X-rays pass through body structures onto specially treated plates (similar to camera film) and a "negative" type picture is made. The more solid a structure is, the whiter it appears on the film. For this reason, bones appear very white on an x-ray film, but less dense tissue such as muscle, blood, skin, and fat appears darker.
|
|
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs, heart, small portions of the gastrointestinal tract, thyroid gland, and the bones of the chest a...
|
|
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs, heart, small portions of the gastrointestinal tract, and the bones of the chest area.
|
|
A positron emission tomography (PET) scan is an imaging test that uses a radioactive substance (called a tracer) to look for disease in the body. Unlike magnetic resonance imaging (MRI) and computed tomography (CT) scans, which reveal the structur...
|
|
|
Positron emission tomography(PET) is a highly specialized imaging technique using short-lived radiolabeled substances to produce powerful images of the body''s biological function.Besides being used to investigate the metabolism of normal organs, P...
|
|
Rather than showing the structure of a body part, PET images show the chemical function of an organ or tissue. PET can show changes in how an organ or tissue works. This can help your healthcare provider diagnose problems and develop a treatment plan for you.
|
|
A heart positron emission tomography (PET) scan is an imaging test that uses a radioactive substance (called a tracer) to look for disease or poor blood flow in the heart. Magnetic resonance imaging (MRI) and computed tomography (CT) scans reveal ...
|
|
Detailed information on positron emission tomography (PET), including information on how PET scans are performed
|
|
A lung positron emission tomography (PET) scan is an imaging test that uses a radioactive substance (called a tracer) to look for disease in the lungs, especially lung cancer. Unlike magnetic resonance imaging (MRI) and computed tomography (CT) sc...
|
|
Positron emission tomography(PET) is a non-invasive scanning technique that utilizes small amounts of radioactive positrons(positively charged particles) to visualize body function and metabolism.As of 2001, PET is the fastest growing nuclear medi...
|
|
The positron emission tomography( PET) unit is a device used to produce images of the body that reflect biochemical changes taking place in the body. Among the body imaging technologies used in medicine, the PET unit is characterized by its use of...
|
|
Finding cancer at its earliest stage can give the best chance of being able to cure it. Different tests are used to find cancers and to help find out if the cancer has spread. A positron-emission tomography (PET) scan is one type of test that can help find and stage cancers as well as monitor how well treatment is working.
|
|
Positron emission tomography(PET) is a non-invasive scanning technique that utilizes small amounts of radioactive positrons(positively charged particles) to visualize body function and metabolism.PET is the fastest growing nuclear medicine tool in...
|
|
Positron emission tomography(PET) is a noninvasive scanning technique that utilizes small amounts of radioactive positrons(positively charged particles) to visualize body function and metabolism.PET is the fastest growing nuclear medicine tool in ...
|
|
|
Positron emission tomography(PET) is a scanning technique used in conjunction with small amounts of radiolabeled compounds to visualize brain anatomy and function.A PET scan showing brain activity while patient recognizes faces—left sides at...
|
|
|
Positron emission tomography(PET) is a highly specialized imaging technique using short-lived radiolabeled substances to produce extremely high resolution images of the body''s biological function.Besides being used to investigate the metabolism of...
|
|
Are the gamma rays of a PET scan dangerous?
Robert Shmerling, M.D., is associate physician and clinical chief of rheumatology at Beth Israel Deaconess Medical Center and an associate professor in medicine at Harvard Medical School. He is an active teacher in the Internal Medicine Residency Program, serving as the Robinson Firm Chief. He is also a teacher in the Rheumatology Fellowship Program and has been a practicing rheumatologist for over 25 years.
|
|
Alanine transaminase (ALT) is an enzyme found in the highest amounts in the liver. Injury to the liver results in release of the substance into the blood. This article discusses the test to measure the amount of ALT in the blood.
|
![]() |
A liver biopsy is a test that takes a sample of tissue from the liver for examination.
|
|
A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. The sample is examined under a microscope by a doctor who specializes in the effects of disease on body tissues(a pathologist) to detec...
|
|
Before the liver biopsy, ask your doctor any questions you have. During a liver biopsy, a needle is inserted through the skin (percutaneous) and into the liver. A small sample of liver tissue is then removed and sent to a lab to be examined.
|
|
|
A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. The sample is examined under a microscope by a pathologist, a doctor who specializes in the effects of disease on body tissues; in this...
|
|
A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. Liver biopsies are sometimes called percutaneous liver biopsies, because the tissue sample is obtained by going through the patient''s s...
|
|
A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. Liver biopsies are sometimes called percutaneous liver biopsies, because the tissue sample is obtained by going through the patient''s s...
|