Cardiac CT imaging

Cardiac CT imaging

NNNR3054

Multiple Select

Which of the following medication can help to reducing heart rate in CCTA preparation?

• Metoprolol tartarate

• Glyceryl Trinitrate (GTN)

• Ivabradine

• Salbutamol

Fill in the Blank

In order to get the best image quality in CCTA examination, the patient's heart rate must be below 65 b.p.m and __________

Multiple Choice

The effect of IV metoprolol can be seen around _____ after administration.

• 1 hour

• 30 minutes

• 5 minutes

• immediately

Multiple Select

Which of the following is/are the contraindication(s) for metoprolol tartarate?

• active bronchospasm

• tachycardia

• Asthma

• AV block

Multiple Choice

Why GTN is introduced in CCTA examination?

• prevent coronary artery spasm

• increase contractibility

• reduce heart rate

• shorten scanning time

Multiple Choice

The CCTA protocol used to reduce radiation dose is?

• Prospective ECG-gating

• Retrospective ECG-gating

Multiple Select

The normal creatinine value for CCTA examination is _______ micro mol per litre

• 35

• 65

• 90

• 155

Multiple Select

Which of the following is/ are the advantage(s) of retrospective ECG-gating?

• reduce radiation dose

• short scanning time

• multiple reconstruction available for post-processing

• beta-blocker protocol is not required

Multiple Choice

In which phase is the best to acquire CCTA images?

• early systolic

• late systolic

• early diastolic

• late diastolic

Multiple Choice

If the patient's heart rate is 65b.p.m. with sinus rhythm. Which reconstruction phase is the best in cardiac cycle?

• 30%-45%

• 45%-60%

• 60%-75%

• 80%-95%

Multiple Select

Which of the following technique(s) can be implemented to further reduce radiation in CCTA examination?

• retrospective ECG-gating

• retrospective ECG-gating

• reduce tube voltage

• tube current modulation

Multiple Select

The common artefacts in CCTA examination includes?

• misregistration

• motion

• streak

• aliasing

Multiple Choice

In CCTA examination, the best location for targeted ROI using bolus triggering protocol is at the ____________

• left atrium

• ascending aorta

• arch of aorta

• pulmonary trunk

Multiple Choice

Which of the following is/are NOT true about saline chaser in CCTA examination?

• reduces streak artifact

• reduces motion artifact

• avoid wastage of CM in the IV tubing

• provides homogenous opacification

Multiple Select

The post-processing images in CCTA includes:

• 3D volume rendering technique (3D VRT)

• shaded surface display (SSD)

• multiplanar imaging (MPR)

• minimum intensity projection (MinIP)

Fill in the Blank

______ score is a semi-automated tool to calculate a score based on the extent of coronary artery calcification detected by an unenhanced low-dose CT scan.

Multiple Select

Which of the following is/are the injection technique(s) required in CCTA examination?

• test bolus

• bolus triggering

• hand bolus

Multiple Choice

A 45-year old man walk-in to the medical clinic for a comprehensive package of heart screening. The physician requests for a CCTA examination. What is the ideal contrast flow rate for him?

• 2 ml/s

• 3 ml/s

• 4 ml/s

• 6 ml/s

Multiple Select

Patient's with coronary artery bypass graft (CABG) required _____

• longer scanning area

• longer scanning time

• calcium scoring prior to CCTA examination

• more contrast volume