Froggy Jumps Doppler Diagnostic ChallengeOnline version Test your knowledge on clinical indicators for Transcranial Doppler with this quiz game! by Elaine Nichols 1 What is the most common indication for Transcranial Doppler? a Diabetes b Sickle cell disease c Hypertension 2 Which vessel is most commonly examined using Transcranial Doppler? a Basilar artery b Middle cerebral artery c Carotid artery 3 What does a high pulsatility index in Transcranial Doppler indicate? a Normal cerebral perfusion b Increased intracranial pressure c Hypotension 4 What is the typical flow pattern seen in vasospasm on Transcranial Doppler? a Elevated systolic flow velocity b Decreased diastolic flow velocity c Normal flow velocity 5 Which condition is NOT typically evaluated using Transcranial Doppler? a Stroke b Pulmonary embolism c Intracranial hemorrhage 6 What is the main advantage of Transcranial Doppler over other imaging modalities? a Low cost b High spatial resolution c Real-time monitoring of cerebral blood flow 7 What is the primary limitation of Transcranial Doppler? a Limited penetration depth b Inability to detect emboli c Operator dependence 8 Which of the following is a contraindication for Transcranial Doppler? a History of migraines b Hypertension c Severe skull defects 9 What is the typical frequency range used in Transcranial Doppler? a 0.5-1 MHz b 2-5 MHz c 10-15 MHz 10 What does a dampened waveform in Transcranial Doppler suggest? a Proximal arterial stenosis b Normal cerebral perfusion c Distal arterial stenosis 11 What does a positive Doppler shift indicate in Transcranial Doppler? a Flow away from the transducer b Flow towards the transducer c No flow detected 12 In which direction does the flow appear if the Doppler angle is 0 degrees? a Opposite to the ultrasound beam b Perpendicular to the ultrasound beam c Parallel to the ultrasound beam 13 What does a negative Doppler shift indicate in Transcranial Doppler? a No flow detected b Flow towards the transducer c Flow away from the transducer 14 What is the angle at which no Doppler shift is detected? a 90 degrees b 180 degrees c 45 degrees 15 How is the direction of flow determined in Transcranial Doppler? a By the direction of the Doppler shift b By the vessel diameter c By the color of the vessel 16 What does a lack of Doppler signal indicate in Transcranial Doppler? a Flow towards the transducer b No flow detected c Flow away from the transducer 17 What happens to the Doppler shift if the flow velocity increases? a The Doppler shift decreases b The Doppler shift increases c The Doppler shift remains constant 18 What is the effect of a higher Doppler frequency on the Doppler shift? a Higher Doppler shift b Lower Doppler shift c No effect on Doppler shift 19 How does the angle of insonation affect the Doppler shift? a Reverses the Doppler shift b Does not affect the Doppler shift c Affects the magnitude of the Doppler shift 20 What is the significance of the direction of flow in Transcranial Doppler? a Helps in diagnosing vascular conditions b Determines the vessel diameter c Indicates the vessel color 21 What does arterial duplex ultrasound evaluate? a Lung capacity b Heart function c Blood flow in arteries 22 What is the purpose of arterial duplex ultrasound? a Detect brain tumors b Assess bone density c Diagnose vascular diseases 23 Which imaging technique is used in arterial duplex ultrasound? a X-ray b MRI c Ultrasound 24 What does a Doppler ultrasound measure in arterial duplex ultrasound? a Blood flow velocity b Heart rate c Respiratory rate 25 What can arterial duplex ultrasound help detect in the arteries? a Plaque buildup b Bone fractures c Muscle tears 26 Which condition can arterial duplex ultrasound assist in diagnosing? a Peripheral artery disease b Asthma c Diabetes 27 What is the advantage of arterial duplex ultrasound over angiography? a Non-invasive b Lower cost c Faster results 28 What type of waves are used in arterial duplex ultrasound? a Light waves b Radio waves c Sound waves 29 What does the color Doppler in arterial duplex ultrasound represent? a Temperature b Direction of blood flow c Tissue density 30 What is a common indication for performing arterial duplex ultrasound? a Ear infection b Eye strain c Leg pain with walking 31 What is the most common indication for a vascular sonography? a Peripheral arterial disease b Deep vein thrombosis c Aortic aneurysm 32 Which imaging modality is often used in conjunction with vascular sonography? a MRI b X-ray c Doppler ultrasound 33 What does the term 'stenosis' refer to in vascular sonography? a Narrowing of a blood vessel b Blockage of a blood vessel c Dilation of a blood vessel 34 Which of the following is a risk factor for developing vascular disease? a Smoking b Regular exercise c Healthy diet 35 What is the purpose of a color Doppler ultrasound in vascular sonography? a To assess blood flow direction b To visualize the heart c To measure blood pressure 36 What is the role of a vascular sonographer in a healthcare setting? a Performing non-invasive vascular exams b Administering medications c Performing surgery 37 What is the typical frequency range used in vascular sonography? a 20-50 MHz b 50-100 kHz c 2-10 MHz 38 Which of the following is a common vascular sonography finding in carotid artery disease? a Aneurysm b Plaque formation c Normal blood flow 39 What is the main advantage of using ultrasound in vascular imaging? a High radiation exposure b Limited image quality c Non-invasiveness 40 What is the primary goal of vascular sonography in patient care? a Early detection of vascular abnormalities b Monitoring of blood pressure c Treatment of vascular diseases 41 What is the purpose of a carotid ultrasound? a To measure lung capacity b To diagnose skin conditions c To assess blood flow in the carotid arteries 42 What does a carotid ultrasound help detect? a Eye diseases b Plaque buildup in the carotid arteries c Bone fractures 43 What type of waves are used in carotid ultrasound? a Light waves b Sound waves c Radio waves 44 Which condition can carotid ultrasound help diagnose? a Carotid artery stenosis b Hypertension c Diabetes 45 What is a common risk factor for carotid artery disease? a Eating vegetables b Regular exercise c Smoking 46 What does a carotid ultrasound show about blood flow? a Temperature and pressure b Direction and speed c Color and texture 47 What can carotid ultrasound help prevent? a Broken bones b Common cold c Stroke 48 What is the main benefit of carotid ultrasound? a Painless b Quick results c Non-invasive 49 What is a possible complication of carotid ultrasound? a Joint pain b Allergic reaction to the ultrasound gel c Increased blood pressure 50 When is carotid ultrasound typically recommended? a After a broken bone b During pregnancy c For individuals at risk of carotid artery disease