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What is the primary method of preparing radiopharmaceuticals?

Mixing the radionuclide with the compound to be labelled at room temperature (correct)

Using a centrifuge to combine the radionuclide and compound

Boiling the radionuclide and compound in a sterile environment

Heating the radionuclide and compound at high temperatures

What type of equipment is used to transfer components between sterile vials?

Shielded syringes (correct)

Gloved hands

Sterile forceps

Unshielded pipettes

What is the purpose of a laminar down-flow cabinet in radiopharmaceutical preparation?

To mix the radionuclide with the compound

To provide a sterile environment for preparation (correct)

To store radioactive materials

To dispose of radioactive waste

What is a characteristic of the workstation used for radiopharmaceutical preparation?

Impervious surfaces Signup and view all the answers

What is necessary for entry into the workstation for radiopharmaceutical preparation?

An air lock and changing room Signup and view all the answers

Why are automated synthesis devices commonly used in PET radiopharmaceutical preparation?

To ensure the preparation time is necessarily short Signup and view all the answers

What is the primary advantage of using a glove box in radiopharmaceutical preparation?

It provides a sterile environment Signup and view all the answers

What is the primary function of a radionuclide in the imaging process?

To signal the location of the radiopharmaceutical by the emission of gamma rays Signup and view all the answers

What is the energy of the gamma rays emitted by the radionuclide 99mTc?

141keV Signup and view all the answers

What is the purpose of a collimator in a gamma camera?

To delineate the image from the patient Signup and view all the answers

What is the main component that converts gamma rays into optical light?

Scintillation crystal Signup and view all the answers

What is the purpose of a gamma camera in medical imaging?

To produce a medical image Signup and view all the answers

What are the components assembled together to form a medical gamma ray detection instrument?

Diversified hardware and connections Signup and view all the answers

What is the final output of the gamma imaging process?

Medical image Signup and view all the answers

What is the purpose of testing for radionuclide purity in radiopharmaceutical quality control?

To prevent unnecessary radiation exposure to patients Signup and view all the answers

Which of the following is NOT a part of radiopharmaceutical quality control?

Patient preparation Signup and view all the answers

What is the function of the radiopharmaceutical in planar imaging?

To concentrate in the organ or tissues of interest Signup and view all the answers

What is the purpose of using a standard radioactive source with a long half-life in radiopharmaceutical quality control?

To calibrate the radionuclide calibrator Signup and view all the answers

What is the purpose of the dose calibrator in radiopharmaceutical preparation?

To measure the dose of the radiopharmaceutical Signup and view all the answers

What is the purpose of the spot colour test in radiopharmaceutical quality control?

To assess the chemical purity of the radiopharmaceutical Signup and view all the answers

What is the advantage of using automated synthesis devices for PET tracers' production?

Reducing radiation exposure of the staff Signup and view all the answers

What is the benefit of using a dual- or triple-headed camera in SPECT?

To halve the image acquisition time or improve the sensitivity Signup and view all the answers

What is the purpose of using an elliptical orbit in SPECT?

To minimise the gap between the collimator and the patient and improve the resolution Signup and view all the answers

What is an advantage of using three or four gamma cameras equally spaced around the rotating gantry in SPECT?

To increase the sensitivity of the camera Signup and view all the answers

What is a beneficial way to present SPECT studies?

As a series of slices or a three-dimensional display Signup and view all the answers

What is the advantage of rotating the 3-D image on the computer screen in SPECT?

To reduce the effect of image noise Signup and view all the answers

What is a major use of SPECT?

Thallium studies of myocardial infarctions and ischaemia, along with quantitative cerebral blood flow Signup and view all the answers

Why is a 180-degree rotation useful in SPECT?

In cardiac tomography Signup and view all the answers

What is a consequence of increased sensitivity in SPECT?

Faster patient throughput or improved resolution Signup and view all the answers

What is the purpose of moving the camera on a circular orbit in SPECT?

To miss the patient's shoulders Signup and view all the answers

What is a characteristic of SPECT images?

They can be either 2-D or 3-D Signup and view all the answers

What happens when primary electrons collide with the first dynode surface in a photomultiplier tube?

More electrons are liberated Signup and view all the answers

What is the purpose of focusing electrodes in a photomultiplier tube?

To direct the photoelectrons towards the first dynode Signup and view all the answers

What is the final destination of the electrons in a photomultiplier tube?

The anode Signup and view all the answers

What is the principle behind the formation of a gamma image in a gamma camera?

True mapping of radioactive agents Signup and view all the answers

What is the effect of scattered gamma photons on the gamma image quality?

They increase image noise Signup and view all the answers

What is the purpose of collimation in gamma ray imaging?

To reduce scattered gamma photons Signup and view all the answers

What is represented by each pixel in a gamma camera?

The spatial location of the detected gamma photons Signup and view all the answers

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