CT scanner tungsten alloy collimator, as its name suggests, is tungsten alloy collimator used in the CT scanner. There are two tungsten alloy collimators on a CT scanner. And they are known as pre-patient collimator and post-patient collimator, respectively.

Tungsten alloy collimator is applied for SPECT-CT scanner to replace lead collimator to guide X-rays. Also, such a high density collimator shields gamma rays and X-rays to provide radiation protection for patients and accompanying personnel as the radioactive isotope used for SPECT-CT is technetium 99.

Tungsten alloy collimator is an important part of X-ray CT scanner in a PET-CT scanner, which can achieve both functions of collimation and radiation shielding. Wherein, PET-CT is a nuclear medicine technique which combines a positron emission tomography (PET) scanner and an X-ray CT scanner to acquire sequential images from both devices in the same session, which are combined into a single superposed image.

SPECT tungsten alloy collimator is a new type of lead-free collimator, and is made of high quality tungsten-based alloy - a new type of environmentally friendly shielding material with good absorption properties for gamma rays (due to its own high density). It means that tungsten alloy collimator is used in nuclear medicine imaging. But do you know why SPECT is also known as gamma camera?