Hepatic colloid imaging

Hepatic colloid imaging intravenous injection of small molecule radioactive colloidal particles with the blood into the liver, about 90% are swallowed by the liver Kupffer cells and uniformly distributed in the liver, so that the distribution of radioactivity in the liver can be displayed by the imaging device. Understand the functional status of the liver parenchyma. Prepare the imaging agent: 99mTc-sulfur colloid, 99mTc-sodium phytate. Intravenous injection: 85~370MBq (5~10mCi), after 5-20min imaging: positive, posterior, right side, planar imaging, or fault.

Basic Information

Specialist classification: Digestive examination classification: CT

Applicable gender: whether men and women apply fasting: fasting

Tips: Follow the doctor's arrangements. Normal value

Normal image: The position and shape are similar to the liver anatomy, the radioactivity is evenly distributed, and the spleen can be developed.

Clinical significance

Abnormal results:

1. Liver position abnormal liver ptosis, sputum, visceral translocation.

2. Abnormal size and shape of diffuse liver disease, cirrhosis, and occupying place.

3. Radioactive distribution abnormalities Single or multiple localized sparse defect areas of liver occupying (primary or metastatic). Diffuse sparse hepatitis, fatty liver, cirrhosis, etc. Localized hot zone hepatic vein or superior vena cava embolization, hamartoma.

Need to check patients with impaired liver function.

Precautions

Contraindications before inspection: Prepare the imaging agent at a pH of 5.5-6.8.

Taboo when checking:

1. Note the amount of imaging agent injected.

2. Correct anatomical markings, including touching the lower edge of the liver or mass, are important for overcoming the diagnosis of pseudo-defects caused by liver deformation or cirrhosis.

Inspection process

Prepare the imaging agent: 99mTc-sulfur colloid, 99mTc-sodium phytate. Intravenous injection: 85~370MBq (5~10mCi), after 5-20min imaging: positive, posterior, right side, planar imaging, or fault.

Not suitable for the crowd

Not suitable for the crowd: no.