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Gross Anatomy - Snell's > Radiography - Pelvis > Flashcards

Radiography - Pelvis Flashcards

1
Q

First line imaging modality for assessing both the male and female pelvic viscera

A

Ultrasound

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2
Q

Used to assess pelvic vasculature

A

Doppler Ultrasound

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3
Q

Why is CT scan not advised for pelvic imaging? When is it used in the pelvic?

A

> Due to radiation exposure to the gonads

> except in the setting of trauma

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4
Q

Operator dependent imaging

A

Ultrasound

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5
Q

What special feature is in doppler ultrasound?

A

Color codes fluid moving away and towards a certain area

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6
Q

Visualizes in multiple planes

A

CT scan

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7
Q

Superior soft tissue contrast resolution for imaging the anatomy

A

MRI

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8
Q

Ultrasound:
(1) Dark image
(2) Light image

A

(1) fluid
(2) more dense; bone - homogenous lightest,
tissue - heterogeneous light to gray

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9
Q

Best type of MRI on:
(1) anatomy imaging
(2) pathological

A

(1) T1-weighted
(2) T2-weighted

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10
Q

Gold standard modality for assessing pelvic vasculature

A

Angiography

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11
Q

What appears bright on T1-weighted MRI images

A

Fat

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12
Q

What appears bright on T2-weighted MRI images

A

Fluid filled structures

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13
Q

(True or False)

MRI does not use radiation

A

True

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14
Q

How to check if there is normal coverage of femoral head by the acetabulum?

A

Center-edge angle (cea)

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15
Q

Female pelvis

A
  • wider/circular pelvic inlet
  • wide pelvic outlet
  • cylindrical pelvic cavity
  • more than 90 degrees infrapubic angle
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16
Q

Male pelvis - describe differences with female

A
  • heart shaped/narrow pelvic inlet
  • narrow pelvic outlet
  • funnel shaped pelvic cavity
  • v-shaped pubic arch
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17
Q

Pelvic view of X-ray tilted 45 degrees caudally at patient lying prone

A

Inlet view

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18
Q

Pelvic view of X-ray tilted cranially on patient lying prone

A

Outlet view

19
Q

Disrupted shenton line indicates

A
  • Hip dislocation
  • femoral neck fracture
20
Q

Happens when a bone fragment separates from the rest of the bone

A

Avulsion fracture

21
Q

Pubococcygeal line (PCL)

A

line that connects inferior margin of the symphysis pubis to coccyx

Where organs should NOT be crossing during valsalva

22
Q

Normal H-line

A

line from inferior margin of pubic symphysis to the posterior aspect of the anorectal junction

Normal < 5cm

23
Q

M-line (muscular pelvic floor relaxation)

A

runs perpendicular from the PCL to the lowest aspect of the H-line

Normal <2cm

longer line indicates anorectal descent - pathological

24
Q

Anorectal angle Normal range:

A

108 to 127 degrees at rest

25
Q

Bulge beyond the anterior rectal line

A

Rectocoele

26
Q

Female sacrum

A

more triangular and shorter

27
Q

Borders for pelvic brim or pelvic inlet

A
  • ant: pubic crest, pectin pubis
  • laterally: arcuate line (of the ilium)
  • post: sacral ala
28
Q

Pelvic outlet borders

A
  • ant: pubic arch, inferior margin of the pubic symphysis, pubic rami, ischial rami
  • laterally: ischial tuberosities

*post-laterally: sacrotuberous ligaments

*post: sacrum, coccyx

29
Q

Muscle attachment to:
iliac crest

A

abdominal muscles

30
Q

Muscle attachment to:
ant. sup. iliac spine

A

sartorius

31
Q

Muscle attachment to:
ant. inf. iliac spine

A

rectus femoris

32
Q

Muscle attachment to:
Greater trochanter

A

gluteus med-min

33
Q

Muscle attachment to:
lesser trochanter

A

iliopsoas

34
Q

Muscle attachment to:
ischial tuberosity

A

hamstrings

35
Q

Muscle attachment to:
Symphysis

A

Adductors

36
Q

A hip condition that occurs in teens and pre-teens who are still growing.

For reasons that are not well understood, the ball at the head of the femur (thighbone) slips off the neck of the bone in a backward direction.

A

Slipped capital femoral epiphysis (SCFE)

37
Q

A rare condition in which the ball-shaped head of the thighbone (femoral head) temporarily loses its blood supply.

As a result, the head of the thighbone collapses, and the area becomes inflamed and irritated.

A

Legg-Calve-Perthes disease (also known as Perthes disease)

38
Q

Pelvic Cavity potential spaces where fluid can accumulate

A
  1. pelvic peritoneal space (rectouterine pouch/rectovesical pouch)
  2. retropubic space (of Retzius)
  3. paravesical space (-lateral fossa)
  4. presacral space
  5. canal of nuck
  6. pudendal canal
  7. obturator canal
39
Q

Alcock’s canal

A

Pudendal canal

40
Q

Normal presacral space

A

< 15mm at 45 yrs old or younger

41
Q

Muscle Bone Attachments - Memorize

A
42
Q

MRI - Functional Anatomic Compartments of a Female Pelvis

A
43
Q

Imaging of body pelvis

A

Gross Anatomy - Snell's (35 decks)

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