Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive. Concept Introduction: Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis. Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Question

Want to see the full answer?

Answer 1

Question

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Retro aldol: NaOH H₂O H NaOH & d H₂O H

Draw the product of the reaction shown below. Ignore inorganic byproducts. H conc. HBr Drawing Q

Calculate the atomic packing factor of diamond knowing that the number of Si atoms per cm3 is 2.66·1022 and that the atomic radii of silicon and oxygen are, respectively, 0.038 and 0.117 nm.

Answer 2

Question

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Answer 6

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Answer 7

Chapter 9, Problem 68P

Interpretation Introduction

Interpretation:

Selenium-75 takes 602 days to diminish to only 3% and yet it is used for pancreatic scans without the fear of it causing any harm to the patient. An explanation should be provided for this query as to why Selenium-75 is not considered dangerous despite being radioactive.

Concept Introduction:

Pancreatitis and pancreatic tumor are not easily diagnosed by standard clinical laboratory methods and radiographic techniques. These methods are not able to detect the presence of cancer or tumor in early stages and hence by the time cancer is diagnosed the disease becomes untreatable. Therefore, the interest was shifted towards radioisotope procedures of pancreatic visualization for the clinical diagnosis.

Photo scanningof pancreatic tissue with radioactive selenium was introduced because selenium is similar to sulfur and it can replace sulfur in methionine amino acid as methionine contains sulfur in its molecule. This change does not alter properties of the amino acid. This replacement of selenium for sulfur has made Se-75 the idealelement for pancreatic scanning.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 11

Ch. 9.3 - Problem 9-1 Iodine-139 is a beta emitter. Write an...Ch. 9.3 - Problem 9-2 Thorium-223 is an alpha emitter. Write...Ch. 9.3 - Prob. 9.3QC Ch. 9.3 - Problem 9-4 Thallium-201, a radioisotope used to...Ch. 9.4 - Problem 9-5 Barium-122 has a half-life of 2...Ch. 9.5 - Problem 9-6 A radioactive isotope in a 9.0-mL vial...Ch. 9.5 - Prob. 9.7QC Ch. 9 - What is the relationship between frequency and...Ch. 9 - How does energy relate to frequency and...Ch. 9 - Prob. 3P

Solution Summary: The author explains why Selenium-75 is not considered dangerous despite being radioactive.

Concept explainers

Want to see the full answer?

Chapter 9 Solutions