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BDS2.5 Applied Biomedical Sciences > Radiography > Flashcards

Radiography Flashcards

1
Q

What could you make the patient drink in a contrast study?

A

Barium +
- radio opaque

More commonly iodine based water soluble contrast

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2
Q

Is a CT scan high or low dose x-rays?

A

High

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3
Q

Does MRI involve xrays?

A

No

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4
Q

How does MRI produce an image?

A

Magnetic field

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5
Q

What does nuclear medicine involve?

A

Radio isotopes - immiting radiation

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6
Q

What rays are used nuclear medicine?

A

Gamma rays

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7
Q

When would you take a lateral soft tissue of the neck?

A

Something stuck on throat

Not very useful

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8
Q

When would you take facial views (maxillofacial)?

A

Trauma

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9
Q

What xray do we use in a dental assessment?

A

OPT

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10
Q

Is a tomsillar abnormality in the oro pharynx or oral cavity?

A

Oropharynx

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11
Q

Where does a fish bone tend to get stuck?

A

Piriform fossa

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12
Q

Is an OPT a plane radiograph?

A

Yes

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13
Q

What gets blurred in an OPG?

A

In front and behind mandible

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14
Q

What can the blurring in an OPG cause?

A

Artefacts

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15
Q

Where is the ulcer here?

A
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16
Q

What classification is important in cancer?

A

TNM classification

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17
Q

Why not use barium in contrast studies?

A

If it gets elsewhere e.g, lungs can cause pneumonia

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18
Q

What is a sialogram?

A

test which uses x-rays and a contrast medium (x-ray dye) to produce detailed images of the salivary glands (parotid or submandibular glands)

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19
Q

What are the symptoms of a pharyngeal pouch?

A

Gurgling in the neck
Swelling
Discomfort
Undigested food vomiting after eating

20
Q

What do you do if you suspect a pharyngeal pouch?

A

Laser therapy of cricopharyngeus muscle

  • relieve symptoms
21
Q

Why do you get a pharyngeal pouch?

A

Isotonic

22
Q

Where has the perforation gone?

A

Airway and oesophagus

23
Q

What is indicated here?

A

Shoulder replacement

24
Q

Who would use a videofluroscopy?

A

Speech and language therapist

25
Q

Laryngectomy?

A

Usually ptx has no speech or very low volume

Oesophageal speech

26
Q

How could you help someone that has had a laryngectonomy?

A

Blom-singer valve

27
Q

What does this show?

A

Parotid sialogram

Normal

28
Q

sjogren’s disease symptoms?

A

Dry mouth
Dry eyes
Arthylagia

29
Q

What can you use to characterise lymph nodes?

A

Ultrasound

30
Q

What is normal and what is likely malignant?

A

Top = normal
Bottom = malignant (smooth)

31
Q

What tumour is commonly found in the parotid gland?

A

Pleomorphic adenoma

PMAs

32
Q

What has to be considered with CT scan?

A

IRMER

33
Q

What would you use for bony detail?

A

CT scan

34
Q

What would you use for soft tissue?

A

MRI

35
Q

Is this an emergency?

A

Yes, pushing on eye

Eye bulge
Stretch optic nerve

36
Q
A

Retro pharyngeal abscess

37
Q

What can a retropharyngeal abscess occlude?

A

Vessels

Here the jugular vein is occluded

38
Q

Where is this tumour sitting?

A

Between the internal and external carotids

Carotid body tumour

The tumour is highly vascularised - hence why it is white

39
Q

T1 vs T2 MRI?

A

T1 bright
T2 dark

40
Q

What does this MRI show?

A

Retropharyngeal lypoma

Bright white is fat

41
Q

What is a closed lock?

A

Disk in front of condyl

42
Q

What scan will you use to look at TMJ?

A

MRI

43
Q

What virus can oropharyngeal cancer be associated with?

A

HPV

44
Q

What is PET CT scan used to diagnose?

A

tumours, diagnose heart disease, brain disorders and other conditions.

45
Q

How can you tell the bright area is cancer?

A

Glucose uptake- could be cancer or inflammatory process

The first area is scar tissue to glucose uptake

BDS2.5 Applied Biomedical Sciences (48 decks)

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