MDCB CERTIFICATION SET 4 |ACTUAL QUESTIONS
AND VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
1. Which of the following histologies is the most aggressive with the lowest survival rate?
A. Glioblastoma
B. Medulloblastoma
C. Ependymoma
D. Juvenile pilocytic astrocytoma
CORRECT ANSWER
A
Question 2
2. The law of Bergonie and Tribondeau states that ionizing radiation is most effective
against cells
that have a:
A. long mitotic life and not actively mitotic and undifferentiated.
B. long mitotic life and actively mitotic and undifferentiated.
C. short mitotic life and actively mitotic and differentiated.
D. short mitotic life and not actively mitotic and differentiated.
CORRECT ANSWER
B
Question 3
1
,3. Which of the following is true of Hodgkin's Lymphoma?
A. It is typically seen in young adult patients.
B. It typically involves bone marrow.
C. It does not respond to chemotherapy.
D. It is commonly extranodal in presentation.
CORRECT ANSWER
A
Question 4
4. In regard to the treatment of soft tissue sarcoma of the extremities, which one of the
following statements is true?
A. Tumor grade and size are less important than histology in determining the radiation field.
B. The initial large field should encompass just the operative scar with 2 cm margin both
proximally and distally.
C. Radiation therapy post wide excision is suggested to have similar local control as surgical
amputation/disarticulation.
D. Post-operatively, the highest dose that should be given to minimize morbidity is 5000 cGy.
CORRECT ANSWER
C
Question 5
5. A patient is receiving radiation to the chest. The calculated dose to the tumor while "on
cord" is 35 Gy at 2.5 Gy per fraction. The cord is receiving 3 Gy per fraction. Assuming
alpha/beta of 3 for late effects, what is the cord equivalent dose at 2 Gy per fraction?
A. 35 Gy
B. 40 Gy
2
, C. 45 Gy
D. 50 Gy
CORRECT ANSWER
D
Question 6
6. When treating carcinoma of the bladder, the superior border of the radiation field
usually does NOT extend superior to S-1. This is to reduce toxicity to the:
A. pelvic crest.
B. small bowel.
C. kidney.
D. ureters.
CORRECT ANSWER
B
Question 7
7. The automated delineation of the Biological Target Volume is generated by using the:
A. Doppler ultrasound to measure blood flow around the target.
B. FDG-PET(CT) and 18F to measure the tissue metabolism.
C. CBCT with equal resolution in all directions.
D. T2 Flair MR image to enhance fluids around the target.
CORRECT ANSWER
B
Question 8
3
AND VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
1. Which of the following histologies is the most aggressive with the lowest survival rate?
A. Glioblastoma
B. Medulloblastoma
C. Ependymoma
D. Juvenile pilocytic astrocytoma
CORRECT ANSWER
A
Question 2
2. The law of Bergonie and Tribondeau states that ionizing radiation is most effective
against cells
that have a:
A. long mitotic life and not actively mitotic and undifferentiated.
B. long mitotic life and actively mitotic and undifferentiated.
C. short mitotic life and actively mitotic and differentiated.
D. short mitotic life and not actively mitotic and differentiated.
CORRECT ANSWER
B
Question 3
1
,3. Which of the following is true of Hodgkin's Lymphoma?
A. It is typically seen in young adult patients.
B. It typically involves bone marrow.
C. It does not respond to chemotherapy.
D. It is commonly extranodal in presentation.
CORRECT ANSWER
A
Question 4
4. In regard to the treatment of soft tissue sarcoma of the extremities, which one of the
following statements is true?
A. Tumor grade and size are less important than histology in determining the radiation field.
B. The initial large field should encompass just the operative scar with 2 cm margin both
proximally and distally.
C. Radiation therapy post wide excision is suggested to have similar local control as surgical
amputation/disarticulation.
D. Post-operatively, the highest dose that should be given to minimize morbidity is 5000 cGy.
CORRECT ANSWER
C
Question 5
5. A patient is receiving radiation to the chest. The calculated dose to the tumor while "on
cord" is 35 Gy at 2.5 Gy per fraction. The cord is receiving 3 Gy per fraction. Assuming
alpha/beta of 3 for late effects, what is the cord equivalent dose at 2 Gy per fraction?
A. 35 Gy
B. 40 Gy
2
, C. 45 Gy
D. 50 Gy
CORRECT ANSWER
D
Question 6
6. When treating carcinoma of the bladder, the superior border of the radiation field
usually does NOT extend superior to S-1. This is to reduce toxicity to the:
A. pelvic crest.
B. small bowel.
C. kidney.
D. ureters.
CORRECT ANSWER
B
Question 7
7. The automated delineation of the Biological Target Volume is generated by using the:
A. Doppler ultrasound to measure blood flow around the target.
B. FDG-PET(CT) and 18F to measure the tissue metabolism.
C. CBCT with equal resolution in all directions.
D. T2 Flair MR image to enhance fluids around the target.
CORRECT ANSWER
B
Question 8
3
