C, D , and E are collectively known as the ______.
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Several primary veins diverging from a point.
Several primary veins diverging from a point.
Which letter points to the spore producing structures of a m…
Which letter points to the spore producing structures of a mushroom?
In annihilation coincidence detection (ACD) circuitry a logi…
In annihilation coincidence detection (ACD) circuitry a logic pulse is generated when a detector detects a signal from a gamma-ray photon.
Radiopharmaceuticals are compounds consisting of a chemical…
Radiopharmaceuticals are compounds consisting of a chemical substrate linked to a radioactive element.
The finite distance which the positron travels before annihi…
The finite distance which the positron travels before annihilation with an electron defines a sphere of uncertainty in SPECT.
The iterative algorithm of image reconstruction for CT scans…
The iterative algorithm of image reconstruction for CT scans starts with an initial estimate of the two-dimensional matrix of attenuation coefficients.
In PET scan, a pair of gamma-ray photons are created simulta…
In PET scan, a pair of gamma-ray photons are created simultaneously and always detected at exactly the same time.
The gamma-ray photons generated for PET scan are from isomer…
The gamma-ray photons generated for PET scan are from isomeric transition.
A sample contains 9879432567 atoms. If 60 atoms of the samp…
A sample contains 9879432567 atoms. If 60 atoms of the sample decay in 5 s, what is the radioactivity of the sample?