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Daily, or every day that the camera is being used for studies on patients.
"Seven different quality control procedures are necessary for a general nuclear medicine camera: energy peaking, uniformity, efficiency, resolution, linearity, high calibration flood, and collimator integrity.
Energy peaking. Daily, the technologist checks the peak of a known radioactive source by the camera's energy spectrum. The energy peak of the camera should correlate with the peak counts of the radionuclide source.
Uniformity. Uniformity is a daily assessment to measure the camera's ability to produce uniform images of a uniform source or accurate images. A uniformity flood source of Tc-99m or Co-57 is placed on the detector of the camera and an image is taken. To ensure acceptable uniformity, quantitative analysis is performed. Quantitatively, the uniformity should be below 5% and preferably in the range of 3% with today's camera abilities.
Efficiency. This analysis can be performed in combination with uniformity. Efficiency assesses the ability of the instrument to detect any radioactive disintegration emitted. When analyzing the efficiency in combination with the uniformity, the time can be noted and compared with previous uniformity floods. When analyzing the efficiency separately, a known amount of activity is counted and the activity converted to disintegrations per minute. The efficiency is calculated by dividing the counts per minute imaged by the calculated disintegrations per minute and multiplying by 100. Efficiency = (cpm/dpm) x 100.
Resolution. Resolution is performed weekly and assesses the camera's ability to produce image detail and sharpness. This test is performed similar to the uniformity test; however, a resolution bar phantom is placed between the camera detector head and uniformity source to produce the resolution image. The images are assessed qualitatively to evaluate the resolution acceptability.
Linearity. Linearity is performed with resolution and assesses the images for horizontal and vertical line straightness or linear lines.
High calibration flood. A high-count flood (100 million counts or greater) is used as a calibration source for the system's images. This high-count flood is applied to static, dynamic, and single photon emission computed tomography (SPECT) images to improve image quality and decrease nonuniformities inherent in the system.
Collimator integrity. Collimator integrity is performed annually (at minimum) by comparing the extrinsic and intrinsic uniformity floods. The collimator is inspected visually for damage such as dents.
What else can I help you with?
What are the best uses for nuclear energy?
Nuclear energy is best used for generating electricity due to its high power output and low carbon emissions compared to fossil fuels. It can also be used for powering desalination plants, producing medical isotopes for treatments, and propelling space missions.
Whirlwind is to breeze as downpour is to what analogies?
Deluge. Tornado. Rice grains. Flood.
Why are concave mirrors used in flood lights?
Concave mirrors are used in flood lights because they can reflect light in a concentrated manner. This helps to direct more light in a specific direction, increasing the brightness and coverage of the light. The curved shape of the concave mirror allows for better focusing and control of the light output.
Which forms of nuclear radiation are capable of ionizing matter?
Ionizing radiation consists of subatomic particles or electromagnetic waves that are energetic enough to detach electrons from atoms or molecules, ionizing them. The occurrence of ionization depends on the energy of the impinging individual particles or waves, and not on their number. An intense flood of particles or waves will not cause ionization if these particles or waves do not carry enough energy to be ionizing. Roughly speaking, particles or photons with energies above a few electron volts (eV) are ionizing. Examples of ionizing particles are energetic alpha particles, beta particles, and neutrons. The ability of electromagnetic waves (photons) to ionize an atom or molecule depends on their wavelength. Radiation on the short wavelength end of the electromagnetic spectrum - ultraviolet, x-rays, and gamma rays - is ionizing.
What is the strongest natural force?
Tsunami is the strongest force we can see often. But: There are four fundamental interactions. These interactions are: Strong Nuclear, Electromagnetic, Weak Nuclear and Gravitational. The strongest of these four is the Strong Nuclear Force.But i guess that on earth naturally there isn't enough Strong nuclear force, except the strong nuclear force we create when detonation an Nuclear bomb. Look at this one for a review of how the strongest nuclear bomb looked like. http://www.youtube.com/watch?v=Pu88gb1EpmII'm not sure but i believe this bomb could stop a tsunami.Here is an interesting story of a man who wrote about it:http://www.pbs.org/wnet/secrets/transcripts/the-world%E2%80%99s-biggest-bomb-program-transcript/862/But again the strongest explosion that awaits on earth is the Yellowstone super volcano that will be the biggest that has ever been on earth.So if you want the strongest of the universe then go with Strong nuclear forceFor the strongest naturally force that happens often on earth then a tsunamiStrongest of all that probably will ever happen on earth then the Yellewstone super volcano
Why dont they make flood reactors flood air pads flood supply pads flood vehicle depots flood field armory and playable in halo wars?
because they are weak and they can't build stuff
Give the uses of roots in man?
provides medicine help to prevent flash flood
What is flood control?
Water is released at intervals from closely spaced field ditches and distributed uniformly over the field.
What is the often flooded field next to a river called?
It is referred to as the Flood Plain.
What are the dangers of field work near or in rivers and what are the risks?
over flood slippery near the river
What are the release dates for The New Hanna-Barbera Cartoon Series - 1962 Medicine Avenue Flood for a Thought Red Riding Hoodlum 1-41?
The New Hanna-Barbera Cartoon Series - 1962 Medicine Avenue Flood for a Thought Red Riding Hoodlum 1-41 was released on: USA: 10 June 1963
Rookie football player who kept asking his coach to flood the football field with water so he could go in fumble sub ball?
No, it's Did you hear about the rookie football player who kept asking his coach to flood the field with water so he can go in as a sub. Not what you said...
Japan shoots down missile in test off Hawaii?
No, but after a flood it messed with the nuclear reactors and it affected Hawaii. Hope this answers your question.
How would you express rain as an agent of floods?
rain is agent of flood becoz when the rain fall continuousaly it may damage the field and when rain fall 20cm to50cm it may cause FLOOD...........
Why would someone cancel a baseball game if there was a flood?
Cause you cant play baseball if the field is drenched in rain.
What has the author A J Lema written?
A. J. Lema has written: 'Crop water requirements and beneficial flood for the Rufiji Flood Plain agriculture' -- subject(s): Field crops, Floods, Water requirements
Did You Hear About the rookie football player who kept asking his coach so he could go in as a sub?
yeah he tried to flood the field
