Typical activity (mci), where 1 mCi = 3.7 x 10' Bq Procedure, isotope Brain an a Te 7-5 7-5 "C (PET) 20 UN (PET) 20 Bo PET) 50 1*F (PET) 10 Lung scan 133 Xe 7.5 Curdiorarcular blood pool 131 0.2 Curdiorarcular arterial flow 201 TI 3 *Na 7-5 Thyroid scan 0.05 0.07 Liver scan 1 Au (omlcid 0.1 ** Te (colkid) Bone scan 0.1 10 Kidney scan 0.1 Table ja.i Diagnomic Uses of Radiopharmacraticals
Radioactive decay
The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.
Artificial Radioactivity
The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.
Table 32.1 indicates that 7.50 mCi of 99mTc is used in a brain scan. What is the mass of technetium?
![Typical activity (mci), where
1 mCi = 3.7 x 10' Bq
Procedure, isotope
Brain an
a Te
7-5
7-5
"C (PET)
20
UN (PET)
20
Bo PET)
50
1*F (PET)
10
Lung scan
133 Xe
7.5
Curdiorarcular blood pool
131
0.2
Curdiorarcular arterial flow
201 TI
3
*Na
7-5
Thyroid scan
0.05
0.07
Liver scan
1 Au (omlcid
0.1
** Te (colkid)
Bone scan
0.1
10
Kidney scan
0.1
Table ja.i Diagnomic Uses of Radiopharmacraticals](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F859f6760-a8b9-477b-b38e-bf0802ea05d7%2F31570967-518a-4071-824e-a48d7c99ab5c%2Fc15l1r4_processed.png&w=3840&q=75)
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