DR. THOMAS K YOHANNAN M.D.
NPI 1396034096
Radiology - Diagnostic Radiology in Stanford, CA

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

This is a diagnostic test where a tiny amount of radioactive material is used to examine your heart's blood flow at rest & during stress, alongside a CT scan for detailed images. It helps identify any heart-related issues like blockages or damage.

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

A nuclear medicine study from skull base to mid-thigh involves a special camera and a small amount of radioactive tracer to create images of your body. It helps detect diseases early by showing the body's function and structure. It's safe and painless.

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

A nuclear medicine study with a limited area CT scan is a diagnostic procedure. A small amount of radioactive substance is injected into your body, which helps create detailed images of a specific area. The CT scan further enhances these images, providing clearer, more precise results.

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

Radioactive drug therapy through a vein involves injecting a drug with radioactive properties into your bloodstream. This drug travels throughout your body, targeting and destroying harmful cells, such as cancer cells, while sparing healthy ones. It's a non-invasive procedure to treat certain diseases.

A nuclear medicine study with SPECT and concurrent CT scan is a diagnostic procedure. It involves the use of a small amount of radioactive substance and imaging techniques to visualize and assess the function of different body areas. It provides detailed images and data to aid in diagnosis and treatment planning.

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

A nuclear medicine study involves injecting a small amount of radioactive substance into your body. This substance travels through your body and gives off energy. Special cameras detect this energy, creating images of the inside of your body. It's a safe, effective way to diagnose various conditions.

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

A nuclear medicine study of the lymphatic system involves injecting a safe, radioactive substance into your body. This substance travels through your lymphatic system and helps create images on a special camera. These images can help doctors diagnose conditions related to your immune system.

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

A nuclear medicine study with SPECT and concurrent CT scan is a special imaging test. It uses a small amount of radioactive substance and advanced imaging techniques to create detailed pictures of your internal body structures. It aids in diagnosing and tracking the progress of treatment for various diseases.

This procedure involves injecting a safe radioactive substance into your body. It travels to your lymph nodes, making them visible on X-ray images. This helps in identifying any abnormal nodes for further examination. It's a standard part of many diagnostic processes.