Image Analysis Final (central rays) Flashcards

1
Q

CR: Digits 2-5

A

perpendicular to PIP joint of affected digit

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2
Q

CR thumb/first digit:

A

perpendicular to MCP joint

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3
Q

CR for PA and oblique hand:

A

perpendicular to the 3rd MCP joint

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4
Q

CR for lateral hand:

A

perpendicular to the 2nd MCP joint

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5
Q

CR for wrist

A

perpendicular to midcarpal area

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6
Q

what is best demonstrated on a PA oblique wrist:

A

trapezium and distal half of scaphoid

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7
Q

what is best demonstrated on AP oblique wrist?

A

pisiform

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8
Q

CR for AP and Lateral forearm:

A

perpendicular to the midpoint of the forearm

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9
Q

why is AP forearm is done over PA?

A

pronation of hand crosses radius over ulna at the proximal third and rotates the humerus medially creating an oblique – AP keeps them separated

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10
Q

CR for AP elbow?

A

perpendicular to elbow joint

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11
Q

What is best demonstrated on the lateral elbow?

A

olecranon process

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12
Q

CR for AP medial oblique elbow:

A

perpendicular to elbow joint

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13
Q

what is best demonstrated on AP Medial oblique elbow?

A

coronoid process

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14
Q

CR for AP Lateral Oblique elbow:

A

perpendicular to elbow joint

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15
Q

what is best demonstrated on AP Lateral Oblique Elbow?

A

radial head and neck

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16
Q

CR AP and Lateral humerus:

A

perpendicular to the mid-portion of the humerus and the center of the IR

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17
Q

CR for AP External SHoulder:

A

perpendicular 1 inch inferior to coracoid process

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18
Q

Hand placement for AP External shoulder?

A

supinate the hand

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19
Q

what is best demonstrated on the AP external shoulder?

A

greater tubercle

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20
Q

CR for AP internal shoulder:

A

perpendicular 1 inch inferior to coracoid process

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21
Q

hand placement for AP internal shoulder

A

back of hand on hip

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22
Q

what’s best demonstrated on an AP internal shoulder?

A

lesser tubercle

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23
Q

CR for Transthoracic Lateral Shoulder

A

perpendicular to the IR entering the MCP at the level of the surgical neck

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24
Q

Placement of affected arm in a Transthoracic Lateral Shoulder

A

By side

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25
Q

Placement of unaffected arm in a Transthoracic Lateral Shoulder

A

Raise it and rest forearm on head and elevate shoulders as much as possible

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26
Q

CR for Axillary Shoulder (Inferosuperior)

A

horizontally through the axilla to the region of AC articulation – medial angulation of CR depends on degree of abduction of arm (15-30)

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27
Q

What is the lesser tubercle placement in Axillary Shoulder(inferosuperior)

A

in profile and directed anteriorly

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28
Q

CR for bilateral AP AC joints:

A

perpendicular to the midline of the body at the level of the AC joints for a single projection

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29
Q

CR for AP Axial AC joints:

A

Directed to the coracoid process at a cephalic angle of 15 degrees

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30
Q

CR for AP Clavicle:

A

perpendicular to midshaft of the clavicle

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31
Q

CR for AP Axial Clavicle:

A

15 degrees cephalic enter the midshaft of the clavicle

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32
Q

What is the purpose of angulation for AP Axial Clavicle?

A

To project the clavicle off the scapula and ribs

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33
Q

CR for AP scapula

A

perpendicular to mid-scapular area at a point approximately 2 inches inferior to the coracoid process

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34
Q

Where is the affected arm placed for a AP scapula?

A

Abduct the arm to a right angle with body, flex the elbow, and support the hand in a comfortable position

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35
Q

CR for lateral scapula:

A

perpendicular to the mid-medial border of the protruding scapula

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36
Q

What makes up the “Y” in the lateral scapula?

A

Acromion, coracoid process, and body of scapula

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37
Q

CR for AP Axial Toes

A

15 degrees posteriorly through 3rd MTP joint

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38
Q

CR for AP oblique Toes:

A

Perpendicular and entering the third MTP joint

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39
Q

CR for Lateral Toes:

A

entering IP joint for great toe or proximal IP joint for lesser toes

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40
Q

CR for AP or AP Axial Foot

A

10 degrees toward the heel entering the base of 3rd metatarsal
or
entering base of third metatarsal

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41
Q

CR for lateral foot

A

perpendicular to the base of third metatarsal

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42
Q

CR for AP medial Oblique Foot

A

base of third metatarsal

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43
Q

Degree of obliquity for AP Medial Oblique Foot

A

30 degrees

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44
Q

AP Medial Oblique Foot critique for correct rotation

A

if more than 30 degrees the lateral cuneiform tends to be thrown over other cuneiforms – cuboid in profile

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45
Q

CR for Axial Calcaneus

A

cephalic angle of 40 degrees to the long axis of the foot entering the base of the third metatarsal

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46
Q

CR for lateral calcaneus

A

1 inch distal to medial malleolus – subtalar joint

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47
Q

CR AP ankle

A

perpendicular through the ankle joint at a point midway between the malleoli

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48
Q

CR Lateral Ankle:

A

perpendicular to the ankle joint entering the medial malleolus

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49
Q

CR for AP medial oblique ankle:

A

perpendicular to the ankle joint entering midway between malleoli

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50
Q

AP medial oblique ankle critique to check rotation

A

distal ends of the tibia and fibula shown and tibiofibular articulation should be shown

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51
Q

CR AP and Lateral Lower Leg

A

perpendicular to the center of the leg

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52
Q

CR AP knee

A

5 degrees cephalic 1/2 inch inferior to the patellar apex

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53
Q

CR Lateral Knee

A

5-7 cephalic 1 inch distal to medial epicondyle

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54
Q

CR AP medial oblique knee

A

1/2 inch inferior to the patellar apex

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55
Q

Patient position for intercondylar fossa (camp Coventry)

A

prone – patient knee to a 40-50 degree angle

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56
Q

CR of intercondylar fossa (camp Coventry)

A

perpendicular to the long axis of the lower leg and centered to the knee joint – angle 40 degrees when knee is 40 degrees

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57
Q

CR for tangential patella (settegast method)

A

perpendicular to the joint space between the patella and the removal condyles when the joint is perpendicular – angle 15-20 degrees

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58
Q

CR for AP Femur

A

perpendicular to the mid-femur

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59
Q

what is the purpose of rotating limb internally 15-20 degrees on a AP Femur?

A

places femoral neck in profile

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60
Q

CR for lateral femur

A

perpendicular to the mid-femur

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61
Q

CR for AP Pelvis:

A

2 inches inferior to ASIS and 2 inches superior to pubic symphysis

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62
Q

how to check for proper lower limb rotation in AP pelvis?

A

if femoral necks parallel with plane of image receptor

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63
Q

CR for AP Hip:

A

perpendicular to femoral neck

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64
Q

AP Hip, hip localization technique:

A

left thumb on ASIS, second finger is on superior margin of pubic symphysis. CR is positioned 1.5 inches distal to center of line drawn between ASIS and pubic symphysis

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65
Q

CR for lateral frog hip

A

perpendicular through the hip joint (midway between ASIS and pubic symphysis)

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66
Q

Greater tubercle position in lateral frog hip

A

greater trochanter overlaps femoral neck

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67
Q

CR Axiolateral Hip

A

perpendicular to long axis of the femoral neck

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68
Q

Relationship of femoral neck and IR in Axiolateral Hip

A

parallel

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69
Q

CR AP open mouth

A

perpendicular to center of IR and entering the midpoint of open mouth

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70
Q

Position of mouth for AP Open Mouth

A

open mouth as wide as possible, adjust head so that a line from the low edge of the upper incisors to the tip of the mastoid process is perpendicular to IR

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71
Q

AP Open Mouth SID and why:

A

30 inch to increase the field of view of the odontoid area

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72
Q

AP Axial Cervical CR

A

15-20 degrees cephalic through C4

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73
Q

which vertebra must be see on AP Axial Cervical

A

C3-T2

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74
Q

what is demonstrated on the AP Axial Cervical

A

the lower 5 cervical bodies, upper 2 or 3 thoracic bodies, the interpediculate spaces, the superimposed transverse and articular processes and the intervertebral disk spaces

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75
Q

CR lateral cervical

A

horizontal and perpendicular to C4

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76
Q

SID for lateral cervical and why

A

60-72” increased object to IR distance to show C7

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77
Q

what is best demonstrated on lateral cervical

A

spinous processes and cervical bodies and interspaces, open zygapophyseal joints

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78
Q

CR posterior oblique cervical

A

C4 at a cephalic angle of 15-20 degrees

79
Q

marker placement for posterior oblique cervical

A

mark down side – opposite from what is demonstrated

80
Q

best demonstrated on posterior oblique cervical

A

intervertebral foramina and pedicles farthest from the IR an oblique projection of bodies

81
Q

CR for anterior oblique cervical

A

C4 at an angle of 15-20 degrees caudal

82
Q

marker placement on Anterior Oblique Cervical

A

mark down side – same side of what’s demonstrated

83
Q

what’s best demonstrated on anterior oblique cervical

A

intervertebral foramina and pedicles closest to the IR and an oblique projection of the bodies

84
Q

CR AP thoracic

A

halfway between the jugular notch and xiphoid process (T7)

85
Q

Respiration for AP thoracic

A

suspend at end of full expiration

86
Q

CR for lateral thoracic

A

perpendicular to level of T7

87
Q

lateral thoracic respiration

A

breathing technique

88
Q

best demonstrated on lateral thoracic

A

lateral projection of thoracic bodies, interspaces, intervertebral foramina, and lower spinous processes

89
Q

which thoracic vertebra are visualized on lateral thoracic spine and why?

A

lower 9 because T1-T3 are superimposed by shoulders

90
Q

CR swimmers

A

caudal 3-5 degrees direct to C7-T1 interspace

91
Q

swimmers respiration

A

suspend, breathing technique

92
Q

CR AP lumbar spine

A

perpendicular to IR at level of iliac crests

93
Q

best demonstrated on AP lumbar

A

lumbar bodies intervertebral disk spaces, interpediculate spaces, laminae, and spinous and transverse processes

94
Q

CR lateral lumbar

A

perpendicular to level of the crest enters MCP

95
Q

best demonstrated on lateral lumbar

A

lumbar bodies and their interspaces, the spinous processes, and the lumbosacral junction

96
Q

CR posterior oblique lumbar

A

2 inches medial to elevate ASIS and 1 1/2 inches above iliac crest

97
Q

best demonstrated on posterior oblique lumbar

A

oblique projection of the lumbar or lumbosacral spine or both showing the articular process on the side closest to the IR

98
Q

Scotty dog ear

A

superior articular process

99
Q

scotty dog eye

A

pedicle

100
Q

scotty dog neck/collar

A

pars interarticularis

101
Q

scotty dog nose

A

transverse process

102
Q

scotty dog front leg

A

inferior articular process

103
Q

CR L5-S1 Spot

A

5-8 caudal center on coronal plane 2 inch posterior to ASIS and 1 1/2 inches inferior to iliac crest

104
Q

CR AP Sacrum

A

15 cephalic at 2 inches superior to pubic symphysis

105
Q

CR AP coccyx

A

10 caudal 2 inches superior to pubic symphysis

106
Q

CR lateral sacrum and coccyx

A

perpendicular and directed to level of ASIS and to a point 3 1/2 inches posterior

107
Q

Lateral Sacrum and Coccyx IR placement

A

top of film at crests

108
Q

CR AP Axial SI joints

A

30-35 cephalic enters 1 1/2 inches superior to pubic symphysis on MSP

109
Q

CR posterior oblique SI joint:

A

perpendicular entering 1 inch medial to elevated ASIS

110
Q

Degree of obliquity of posterior oblique SI joint

A

25-30

111
Q

which SI joint is demonstrated on the posterior oblique SI joint?

A

upside

112
Q

CR for AP and Lateral Esophagus

A

IR is at the level of the mouth – level of T5-T6

113
Q

CR RAO Esophagus

A

Top of IR is at the level of mouth (level of T5-T6)

114
Q

degree of obliquity for RAO esophagus:

A

35-40 degrees

115
Q

Purpose of obliquing patient for RAO esophagus

A

places esophagus between the vertebra and the heart

116
Q

CR for PA UGI

A

1-2 inch above the lower rib margin at the level of L1-L2

117
Q

where contrast will be on a double-contrast study for PA UGI?

A

body, duodenal bulb, and pylorus

118
Q

CR RAO UGI:

A

1-2 inches above lower rib margin level of L1-L2

119
Q

Degree of obliquity RAO UGI:

A

40-70 degrees

120
Q

what is demonstrated to RAO UGI:

A

stomach, duodenal bulb, duodenal loop, pyloric canal

121
Q

CR lateral UGI

A

level of L1-2 for recumbent (1-2 inches above lower rib margin) level of L3 for upright

122
Q

CR AP UGI

A

level midway between the xiphoid process and lower rib margin

123
Q

in AP UGI where barium will be on double-contrast study

A

fundus

124
Q

CR for PA BE

A

enter the midline of the body at the level of the iliac crests

125
Q

where is barium situated in colon in PA BE?

A

transverse colon

126
Q

CR PA Axial Sigmoid BE

A

30-40 caudal to enter midline of body at the lvel of ASIS

127
Q

best demonstrated on PA Axial Sigmoid BE

A

rectrosigmoid area of colon

128
Q

CR PA Oblique RAO BE

A

1-2 inches lateral to midline of the body on the elevate side at level of iliac crest

129
Q

degree of obliquity for PA Oblique (RAO) BE

A

35-45

130
Q

best demonstrated PA Oblique (RAO) BE

A

right colic flexure, ascending colon, and the sigmoid colon

131
Q

CR PA oblique (LAO) BE

A

perpendicular to IR and entering approximately 1-2 inches lateral to midline of the body on the elevated side at the level of iliac crest

132
Q

degree of obliquity for PA oblique (LAO) BE

A

35-45

133
Q

Best demonstrated on PA oblique LAO BE

A

left colic flexure and the descending portion of the colon

134
Q

CR left lateral rectum

A

enter MCP at level of ASIS

135
Q

best demonstrated on left lateral rectum

A

rectum and distal sigmoid portion

136
Q

CR AP BE

A

enter midline of body at the level of iliac crest

137
Q

where barium lies on double-contrast AP BE

A

flexures

138
Q

CR AP Axial Sigmoid BE

A

30-40 cephalic enter midline of body approximately 2 inches below ASIS

139
Q

best demonstrated AP Axial Sigmoid BE

A

rectrosigmoid area of colon

140
Q

CR Right lateral decubitus BE

A

horizontal and perpendicular to enter the midline of the body at the level of the iliac crests

141
Q

best demonstrated on right lateral decubitus BE

A

“UP” medial side of the ascending colon and lateral side of descending colon when colon is inflated with air

142
Q

CR left lateral decubitus BE

A

horizontal and perpendicular to the IR to enter the midline of the body at the level of iliac crests

143
Q

best demonstrated on left lateral decubitus BE

A

“up” lateral side of the ascending colon and the medial side of the descending colon when the colon is inflated with air

144
Q

CR cross table lateral (ventral decub) BE

A

horizontal and perpendicular to the IR to enter MCP of the body at the level of the iliac crests

145
Q

bets demonstrated cross table lateral (ventral decub) BE

A

“up” posterior portions of colon

– only on double contrast

146
Q

CR PA Skull

A

exit nasion

147
Q

PA Skull best demonstrates

A

frontal bone

148
Q

PA Skull OML

A

perpendicular

149
Q

PA Skull petrous ridges

A

filling the orbits

150
Q

CR PA Axial Skull (Caldwell)

A

15 degree caudal exit nasion

151
Q

PA Axial Skull (Caldwell) best demonstrated

A

frontal bone

152
Q

PA Axial Skull Caldwell OML

A

perpendicular

153
Q

PA Axial Skull Caldwell Petrous Ridges

A

lower third of orbit

154
Q

CR lateral skull

A

perpendicular entering 2 inches superior to EAM

155
Q

in lateral skull which lines are parallel with long axis of IR

A

IOML and MSP

156
Q

Lateral Skull IPL

A

perpendicular

157
Q

CR AP Axial Skull(Townes)

A

Directed through the foramen magnum at a caudal angle of 30 degrees to OML or 37 degrees to IOML. Enters approximately 2 1/2 inches above the glabella and passes through the level of the EAM

158
Q

AP Axial Skull Townes best demonstrates

A

occipital bone

159
Q

CR lateral facial bones

A

halfway between the outer canthus and EAM

160
Q

What facial bones are demonstrated on lateral facial bones

A

All facial bones

161
Q

CR for Parietoacanthial (waters)

A

perpendicular to exit acanthion

162
Q

Parietoacanthial Waters OML

A

37 degree angle

163
Q

Parietoacanthial Waters which line is perpendicular to IR

A

MML and MSP

164
Q

CR lateral nasal bones

A

perpendicular to the bridge of the nose at a point 1/2 inch distal to nasion

165
Q

which side is demonstrated on lateral nasal bones

A

side nearest film

166
Q

lateral nasal bones done TT or bucky

A

TT

167
Q

CR SMV for zygomatic arches

A

perpendicular to the IOML and entering MSP of throat approximately 1 inch posterior to outer canthus

168
Q

SMV for zygomatic arches IOML

A

parallel

169
Q

SMV for zygomatic arches MSP

A

perpendicular

170
Q

CR Lateral Sinuses

A

horizontal entering the patient’s head 1/2 to 1 inch posterior to outer canthus

171
Q

Lateral sinus IPL

A

perpendicular to IR

172
Q

Lateral Sinus MSP

A

parallel to IR

173
Q

Lateral Sinus IOML

A

parallel to transverse plane of IR

174
Q

What sinuses are demonstrated on Lateral Sinuses

A

all

175
Q

what sinuses are demonstrated on Caldwell Sinuses?

A

frontal, sphenoid, maxillary

176
Q

what sinus I best demonstrated in Caldwell sinuses?

A

frontal

177
Q

location of petrous ridges in waters sinuses?

A

below the floor of the maxillary sinus

178
Q

sinuses demonstrated in waters sinus

A

maxillary sinus, ethmoid sinus, frontal

179
Q

which sinus is best demonstrated in waters sinus?

A

maxillary sinus

180
Q

CR for PA mandible

A

perpendicular to exit acanthion

181
Q

in PA mandible what is in contact with the grid

A

patients forehead and nose

182
Q

CR PA Axial Mandible

A

20-25 cephalic exits acanthion

183
Q

CR Axiolateral Oblique Mandible

A

20-25 cephalic enters approximately 2” distal gonion of upside

184
Q

chin placement of axiolateral oblique mandible

A

extend until body is parallel with IR plane

185
Q

CR AP Axial TMJ

A

35 caudal midway between TMJs entering a point 3 inches above nasion

186
Q

What 2 exposures are made for AP axial TMJ

A

open and closed mouth

187
Q

Axiolateral TMJ CR

A

25-30 caudal enters 1/2” anterior and 2” superior to upside EAM, exits through TMJ

188
Q

what side is against IR for Axiolateral TMJ

A

affected side

189
Q

what is demonstrated on Axiolateral TMJ

A

condyles and neck of mandible

190
Q

CR Rhese

A

exits down orbit

191
Q

In Rhese what parts touching grid

A

nose, cheek, and chin

192
Q

What positioning line is perpendicular to IR in Rhese?

A

AML

193
Q

what is demonstrated in Rhese?

A

optic foramen in lower outer quadrant of orbit