Some Radioactive Isotopes Useful in Medical Imaging Mode of Isotope Decay Half-life Use in Medical Imaging Carbon-11 B*, y Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract Bone marrow function, diagnose anemias Whole-body scan for tumors Pancreas scan Lung ventilation scan Scan for bone diseases, including cancer Brain, liver, kidney, bone scans; diagnosis of damaged heart muscle Diagnosis of thyroid malfunction Kidney scan Heart scan and exercise stress test 20.3 m Fluorine-18 Phosphorus-32 Chromium-51 Iron-59 Gallium-67 109 m 14.3 d P E.C., y В, у E.C., y EC., Y Cr SFe Ga Se 27.7 d 44.5 d 78.3 h 118 d Selenium-75 Кгypton-8 1m Strontium-81 Technetium-99m 13.3 s 22.2 m Te 1911 1Hg 201TI 6.01 h 8.04 d Iodine-131 Mercury-197 Thallium-201 В, у E.C., y E.C., y 64.1 h 3.05 d The radioactive isotope gallium-67 is used in medical imaging as indicated on the table above. If 60.3 milligrams of gallium-67 is administered to a patient, how many milligrams are left in the body after 391.5 hours? mg

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Some Radioactive Isotopes Useful in Medical Imaging
Mode of
Isotope
Decay
Half-life
Use in Medical Imaging
B+, y
B+, y
Carbon-11
20.3 m
Brain scan to trace glucose metabolism
Brain scan to trace glucose metabolism
Detect eye tumors
Diagnose albinism, image the spleen and gastrointestinal tract
Bone marrow function, diagnose anemias
Whole-body scan for tumors
Pancreas scan
18F
Fluorine-18
109 m
14.3 d
27.7 d
44.5 d
Phosphorus-32
Chromium-51
Cr
SFe
Ga
E.C., Y
В, у
E.C., Y
E.C., y
Iron-59
Gallium-67
78.3 h
Selenium-75
118 4
118 d
34Se
8Kr
Sr
Krypton-81m
Strontium-81
Lung ventilation scan
Scan for bone diseases, including cancer
Brain, liver, kidney, bone scans; diagnosis of damaged heart muscle
Diagnosis of thyroid malfunction
Kidney scan
Heart scan and exercise stress test
13.3 s
22.2 m
22.2 m
6.01 h
8.04 d
Technetium-99m
43
Iodine-131
Hg
201TI
В, у
E.C., y
E.C., Y
197T
Mercury-197
Thallium-201
64.1 h
3.05 d
The radioactive isotope gallium-67 is used in medical imaging as indicated on the table above. If 60.3 milligrams of gallium-67 is administered to a patient, how many milligrams are
left in the body after 391.5 hours?
mg
Transcribed Image Text:Some Radioactive Isotopes Useful in Medical Imaging Mode of Isotope Decay Half-life Use in Medical Imaging B+, y B+, y Carbon-11 20.3 m Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract Bone marrow function, diagnose anemias Whole-body scan for tumors Pancreas scan 18F Fluorine-18 109 m 14.3 d 27.7 d 44.5 d Phosphorus-32 Chromium-51 Cr SFe Ga E.C., Y В, у E.C., Y E.C., y Iron-59 Gallium-67 78.3 h Selenium-75 118 4 118 d 34Se 8Kr Sr Krypton-81m Strontium-81 Lung ventilation scan Scan for bone diseases, including cancer Brain, liver, kidney, bone scans; diagnosis of damaged heart muscle Diagnosis of thyroid malfunction Kidney scan Heart scan and exercise stress test 13.3 s 22.2 m 22.2 m 6.01 h 8.04 d Technetium-99m 43 Iodine-131 Hg 201TI В, у E.C., y E.C., Y 197T Mercury-197 Thallium-201 64.1 h 3.05 d The radioactive isotope gallium-67 is used in medical imaging as indicated on the table above. If 60.3 milligrams of gallium-67 is administered to a patient, how many milligrams are left in the body after 391.5 hours? mg
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