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CT Imaging Procedures > Cardiovascular Imaging (16) > Flashcards

Cardiovascular Imaging (16) Flashcards

1
Q

CTA Abdomen Pelvis: Indications (3)

A

Known or suspected aneurysm
Aortic injury
Anomaly in the aorta or it’s branches

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2
Q

CTA Abdomen Pelvis: Scan Type

A

Helical

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3
Q

CTA Abdomen Pelvis: Slice Parameters

A

2.5mm w/matching interval

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4
Q

CTA Abdomen Pelvis: Gantry Tilt

A

None

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5
Q

CTA Abdomen Pelvis: Contrast
Volume
Timing
Rate
Scan direction

A

150 mL IV
bolus tracking
Minimum 4mL/s
Superior to Inferior (direction of blood flow)

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6
Q

CTA Abdomen Pelvis: Algorithm

A

Standard: 400/40

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7
Q

AAA

A

Abdominal Aortic Aneurysm

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8
Q

AAA commonly leads to/presents with (3)

A

Dissection
Rupture
Mural Thrombosis

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9
Q

Thrombus attached to vessel wall–typically from blood stasis

A

Mural Thrombosis

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10
Q

Abdominal Aorta Branches (Sup–>Inf)

A

1:Celiac Trunk–trifurcates into splenic artery, left gastric artery, hepatic artery
2: Superior Mesenteric Artery
3: Renal Arteries
4: Inferior Mesenteric Artery
5: Common Iliac Bifurcation

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11
Q

Z-Axis Resolution

A

Resolution in Sag/Cor images

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12
Q

Using thicker source images (e.g., >1.25mm) typically results in blurry _______ appearance

A

Stair-step

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13
Q

CTA Run-Off (“Abdominal Aorta and Bilateral Iliofemoral Lower Extremity Runoff”)

A

Demonstrates full extent of arterial structures from diaphragm through ankles

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14
Q

CTA Run-Off: Indications (6)

A

Leg Pain
Claudication
PVD
Diabetes
Non-healing Ulcers
AAA
Weak Pulses in LE

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15
Q

CTA Run-Off: Scan Type

A

Helical

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16
Q

CTA Run-Off: Slice Thickness

A

1.25 mm

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17
Q

CTA Run-Off: Gantry Tilt

A

None

18
Q

CTA Run-Off: Contrast
Volume
Timing
Rate
Direction

A

150mL
Bolus Tracking (or timing)
4mL/s
Superior to Inferior (direction of blood flow)

19
Q

CTA Run-Off: Placement of Bolus Tracker

A

Aorta at level of renal arteries

20
Q

CTA Run-Off: Algorithm

A

Standard 400/40

21
Q

CTA Run-Off: Pathologies Demonstrated (3+bonus)

A

Thrombus
Aneurysm
Dissection
Above associated conditions such as: Organ Infarct

22
Q

MIP/VR images should be created from the thinnest available source images: usually a max of _______ mm with _______ mm interval

A

1.25mm
0.625mm

23
Q

CTA Coronary Arteries: Indications (3+)

A

Coronary Anomalies
Heart Ds
CP
Etc.

24
Q

CTA Coronary Arteries: Scan Type

A

Helical

25
Q

CTA Coronary Arteries: Slice Thickness

A

0.625 mm

26
Q

CTA Coronary Arteries: Gantry Tilt

A

None

27
Q

CTA Coronary Arteries: Contrast
Volume
Timing
Rate
Direction

A

100-150 mL
Bolus Tracking
4-5 mL/s
Sup–>Inf (direction of blood flow)

28
Q

CTA Coronary Arteries: Algorithm

A

Standard 600/60

29
Q

CTA Coronary Arteries: Reformations

A

Curved & MIP commonly used to better visualize the coronary arteries

30
Q

EKG is used in order to capture images during specific phases of heart contraction, namely _______ _______

A

ventricular diastole

31
Q

Prospective Gating

A

Scans only during the specific phase of heart contraction

32
Q

Retrospective gating

A

Collects image info during all phases and retrospectively reconstructs this data at desired phase of contraction

33
Q

Medications commonly given prior to Cardiac Imaging

A

Beta-blockers
Sublingual NTG

34
Q

Benefit of Beta-blockers for cardiac imaging

A

Slow HR (<65 bpm)
Prevent arrhythmias

35
Q

Benefit of sublingual NTG

A

Dilates coronary arteries
Prevents vascular spasms that mimic appearance of vascular disease

36
Q

Curved Reformations

A

Display entire (tortuous) vessel in the same plane

37
Q

CTA Abdomen/Pelvis: bolus tracker placement

A

aorta at level of diaphragm

38
Q

CTA Abdomen Pelvis: FOV

A

Above the level of the diaphragm to level of pubic symphysis

39
Q

CTA Abdominal Aorta: FOV

A

Almost always includes pelvis; always includes abdomen

40
Q

CTA Coronary Arteries: ROI placement

A

Base of the ascending aorta (where cardiac arteries branch off)

41
Q

CTA Coronary Arteries: Utility of 600/60

A

Slightly less contrast, slightly darker image

CT Imaging Procedures (11 decks)

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