1|Page
RVT ARDMS EXAM REVIEW 2025 | LATEST
QUESTIONS WITH CORRECT DETAILED
ANSWERS
Limitations of venography? - correct-answer--highly technical in technique and
interpretation.
-expensive
-may be uncomfortable for patients
-can have allergic reactions in patients with severe allergies to iodine,
troublesome in patients with severe peripheral vascular occlusive disease
-exposes patients to radiation
How is ascending venography preformed? - correct-answer-Requires contrast
agent to be injected into a distal superficial vein and directed into the deep
system.
-lower extremity study, a vein on dorsum of foot is used.
-upper extremity study, the basilic or cephalic may be used.
-Serial x-rays are taken as contrast material passes through some of the deep
veins.
,2|Page
How is descending venography performed? - correct-answer--evaluates lower
extremity only.
-contrast agent usually injected into common femoral vein.
-Serial x-rays are taken as contrast material passes through some of the deep
veins.
What is a lung ventilation/perfusion scan? - correct-answer-Measures air and
blood flow in the lungs and is a screening test for detection of perfusion defects of
the lungs.
-referred to as a V/Q scan or "ventilation quotient": a mathematical equation for
calculating both air and blood flow.
Capabilities of V/Q scan? - correct-answer-Detects defects attributed to PE,
usually originating from DVT, that lodges in the small vessels of the lungs and
prevents adequate perfusion.
-can detect poor blood flow in pulmonary vessels.
Limitations of V/Q scan? - correct-answer-Other disorders besides microembolism
can cause perfusion defects like: emphysema, asthma, pneumonia, congestive
heart failure, liver cirrhosis, radiotherapy, and postoperative phenomenon.
-patients may have an allergic reaction to the radioisotope medium.
, 3|Page
How is a V/Q scan performed? - correct-answer--supine on table
-hour before test, IV is placed in arm and a slightly radioactive liquid agent is
injected through IV.
-gamma camera sctintigraphy is used to get multiple images of chest take from
different angles in order to detect radionuclide.
-during Ventilation scan: half of images, patient breaths from a tube inhaling mix
of air, oxygen, and radioactive version of gas, which is detected by camera,
allowing airflow in different parts of lung to be measured.
-during perfusion scan: other half of images, camera will track injected
radionuclide in order to determine the presence of blood flow in different
locations of lung.
Interpretation of V/Q scan? - correct-answer-Interpreted as representing high,
moderate, or low probability of PE, or they may be intermediate.
-patients with normal airflow but abnormal blood flow may have a PE.
-patients with localized areas of low blood flow may have other lung diseases, like
COPD.
What is pulmonary angiography? - correct-answer-Evaluating pulmonary arteries
for PE
What is a computed tomographic angiography(CTA)? - correct-answer--more
often used to evaluate PE. STUDY OF CHOICE FOR PE.
RVT ARDMS EXAM REVIEW 2025 | LATEST
QUESTIONS WITH CORRECT DETAILED
ANSWERS
Limitations of venography? - correct-answer--highly technical in technique and
interpretation.
-expensive
-may be uncomfortable for patients
-can have allergic reactions in patients with severe allergies to iodine,
troublesome in patients with severe peripheral vascular occlusive disease
-exposes patients to radiation
How is ascending venography preformed? - correct-answer-Requires contrast
agent to be injected into a distal superficial vein and directed into the deep
system.
-lower extremity study, a vein on dorsum of foot is used.
-upper extremity study, the basilic or cephalic may be used.
-Serial x-rays are taken as contrast material passes through some of the deep
veins.
,2|Page
How is descending venography performed? - correct-answer--evaluates lower
extremity only.
-contrast agent usually injected into common femoral vein.
-Serial x-rays are taken as contrast material passes through some of the deep
veins.
What is a lung ventilation/perfusion scan? - correct-answer-Measures air and
blood flow in the lungs and is a screening test for detection of perfusion defects of
the lungs.
-referred to as a V/Q scan or "ventilation quotient": a mathematical equation for
calculating both air and blood flow.
Capabilities of V/Q scan? - correct-answer-Detects defects attributed to PE,
usually originating from DVT, that lodges in the small vessels of the lungs and
prevents adequate perfusion.
-can detect poor blood flow in pulmonary vessels.
Limitations of V/Q scan? - correct-answer-Other disorders besides microembolism
can cause perfusion defects like: emphysema, asthma, pneumonia, congestive
heart failure, liver cirrhosis, radiotherapy, and postoperative phenomenon.
-patients may have an allergic reaction to the radioisotope medium.
, 3|Page
How is a V/Q scan performed? - correct-answer--supine on table
-hour before test, IV is placed in arm and a slightly radioactive liquid agent is
injected through IV.
-gamma camera sctintigraphy is used to get multiple images of chest take from
different angles in order to detect radionuclide.
-during Ventilation scan: half of images, patient breaths from a tube inhaling mix
of air, oxygen, and radioactive version of gas, which is detected by camera,
allowing airflow in different parts of lung to be measured.
-during perfusion scan: other half of images, camera will track injected
radionuclide in order to determine the presence of blood flow in different
locations of lung.
Interpretation of V/Q scan? - correct-answer-Interpreted as representing high,
moderate, or low probability of PE, or they may be intermediate.
-patients with normal airflow but abnormal blood flow may have a PE.
-patients with localized areas of low blood flow may have other lung diseases, like
COPD.
What is pulmonary angiography? - correct-answer-Evaluating pulmonary arteries
for PE
What is a computed tomographic angiography(CTA)? - correct-answer--more
often used to evaluate PE. STUDY OF CHOICE FOR PE.
