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Detection of Residual or Recurrent Disease in Cancer Treatment

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Detection of Residual or Recurrent Disease in Cancer Treatment

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Questions and Answers

What is the primary challenge in differentiating post-therapy changes from residual viable tumor tissue?

Limited availability of radiopharmaceuticals
High cost of PET scans
Difficulty in interpreting MRI and CT scans (correct)
Insufficient training of radiologists

What is the role of PET scans in detecting tumor recurrence?

To confirm the diagnosis of a new tumor
To monitor the effectiveness of chemotherapy
To detect the presence of metastasis
To differentiate tumor recurrence from necrosis (correct)

What is the significance of radiopharmaceuticals in different malignancies?

They play an important role in detecting recurrence (correct)
They are used to monitor the effectiveness of radiation therapy
They are used to treat cancer
They are used to diagnose cancer

What is the advantage of using F-18-FDG-PET/CT scans in detecting recurrent tumor?

It can detect recurrent tumor at multiple lymph nodes and spleen (A) Signup and view all the answers

What is the purpose of performing follow-up F-18-FDG-PET/CT studies?

To detect recurrent tumor at multiple lymph nodes and spleen (B) Signup and view all the answers

What is the limitation of MRI and CT scans in differentiating post-therapy changes?

distinguishing between necrosis and tumor recurrence (A) Signup and view all the answers

Which of the following is an example of a radiopharmaceutical?

thalium-201 (A) Signup and view all the answers

What does the follow-up F-18-FDG-PET/CT study in the given image show?

recurrent tumor at multiple lymph nodes and spleen (A) Signup and view all the answers

Why is PET scan used in detecting tumor recurrence?

because it is more accurate than MRI and CT scans in differentiating tumor recurrence from necrosis (C) Signup and view all the answers

What is the importance of identifying viable tumors by imaging?

to monitor the effectiveness of treatment (C) Signup and view all the answers