The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes? __ mg
The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes? __ mg
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes?
__ mg
__ mg
Transcribed Image Text:¹C
18F
P
51 Cr
Fe
Ga
35Se
81m kr
Sr
99m Tc
181
1% Hg
20171
Some Radioactive Isotopes Useful in Medical Imaging
Mode of
Decay
Isotope
Carbon-11
Fluorine-18
Phosphorus-32
Chromium-51
Iron-59
Gallium-67
Selenium-75
Krypton-81m
Strontium-81
Technetium-99m
Iodine-131
Mercury-197
Thallium-201
B+, Y
B+, y
B
E.C., Y
B, Y
E.C., Y
E.C., Y
Y
B
Y
B, Y
E.C., Y
E.C., Y
Half-life
20.3 m
109 m
14.3 d
27.7 d
44.5 d
78.3 h
118 d.
13.3 s
22.2 m
6.01 h
8.04 d
64.1 h
3.05 d
Use in Medical Imaging
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
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