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Cassette size, CR, kVp, SID

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Chest PA   14x17 CW or LW depending on body habitus of patient; CR perpendicular to T7; kVp-110; SID-72; ID blocker up  
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Chest Lateral   14x17 LW; CR perpendicular to mid thorax at level of T7; kVp-125; SID-72; ID blocker up  
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Hand PA   10x12 (small hand, split into two sides), 8x10 (large hand); CR perpendicular centered to 3rd MCP joint; kVp-55, SID-42(tabletop)  
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Lateral Hand (fan and foreign object)   8x10; CR perpendicular centerd to 2nd MCP joint; kVp-60, SID-42(tabletop)  
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Oblique Hand PA   10x12 (small hand, 2 images per cassette), 8x10 (large hand); CR perpendicular centered to 3rd MCP joint; kVp-55; SID-42(tabletop)  
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Digits PA, oblique, Lateral   8x10 CW (2 or more images per cassette); CR perpendicular centered to PIP joint; kVp-55; SID-42(tabletop)  
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Thumb Oblique, lateral, AP   8x10 CW (2 or more images per cassette); CR perpendicular centered to 1st MCP joint; kVp-55; SID-42(tabletop)  
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Wrist PA   8x10 CW (2 images per cassette); CR perpendicular centered to midcarpals; kVp-55; SID-42(tabletop)  
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Wrist Oblique   8x10 CW (2 images per cassette); CR perpendicular centered to midcarpals; kVp-55; SID-42(tabletop)  
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Wrist Lateral   8x10 LW; CR perpendicular centered to midcarpals; kVp-60; SID-42(tabletop)  
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Wrist PA Ulnar Deviation   8x10 LW or CW (2 images per cassette); CR perpendicular to scaphoid; kVp-55; SID-42(tabletop)  
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Forearm AP   14x17 LW (2 images per cassette); CR perpendicular to midpoint on forearm; kVp-60; SID-42(tabletop)  
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Forearm Lateral   14x17 LW (2 images per cassette); CR perpendicular to midpoint on forearm; kVp-60; SID-42(tabletop)  
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Elbow AP   8x10 LW; CR perpendicular centered to mid elbow joint; kVp-60; SID-42(tabletop)  
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Elbow Lateral   8x10 CW; CR perpendicular centered to mid-elbow joint; kVp-65; SID-42(tabletop)  
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Elbow Oblique medial(internal), lateral(external)   8x10 LW, or 10x12 CW (2 images per cassette); CR perpendicular centered to mid elbow joint; kVp-65; SID-42(tabletop)  
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Humerus AP, Lateral   14x17 LW; CR to mid humerus; kVp-70; SID-40; top margin of IR 1.5in above humeral head  
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Humerus transthoracic lateral   14x17 LW; CR to mid humerus; kVp-80; SID-40  
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Shoulder AP (neutral, internal, external rotation)   10x12 CW; CR perpendicular to a point 1 inch inferior to coracoid process; kVp-75; SID-40  
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Shoulder PA Oblique (scapula Y)   10x12 LW; CR perpendicular to scapulohumeral joint; kVp-85; SID-40  
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Clavicle AP, AP axial (25 degrees cephalad)   10x12 CW; AP (CR perpendicular to mid clavicle), AP axial (CR 25 degrees cephalad to mid clavicle) kVp-70; SID-40  
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Scapula AP (salute)   10x12 LW; CR perpendicular to midscapular area at a point approxiametly 2 inches inferior to coracoid process; kVp-75; SID-40;IR-2in above shoulders  
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Scapula lateral (scapula Y)   10x12 LW; CR perpendicular to mid-medial (vertebral)border; kVp-85; SID-40; IR-2in above shoulders  
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Toes AP   8x10 CW (2 images per cassette); CR (if including all toes) perpendicular to 3rd MTP joint. CR (if singling out a toe) perpendicular to PIP joint; kVp-55; SID-42(tabletop)  
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Toes Lateral   8x10 CW (2 images per cassette); CR perpendicular to IP joint of great toe or PIP joint of lesser toes; kVp-55; SID-42(tabletop)  
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Toes oblique (30-45 degree medial rotation for 1st-3rd digits and lateral rotation for 4th-5th digitd)   8x10 CW (2 images per cassette); CR perpendicular to MTP joint of affected toe; kVp-55; SID-42(tabletop)  
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Foot AP   10x12 LW; CR either perpendicular to IR centered to base of 3rd metatarsal or 10degrees posteriorly (toward heel) centered to base of 3rd metatarsal; kVp-60; SID-42(tabletop)  
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Foot Oblique (30-45 degrees medial rotation)   10x12 LW; CR perpendicular centered to base of 3rd metatarsal; kVp-60; SID-42(tabletop)  
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Foot Lateral (mediolateral projection)   8x10 CW or 10x12 CW for large foot; CR perpendicular centered to base of 3rd metatarsal; kVp-60; SID-42(tabletop); kVp-60; SID-42(tabletop)  
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Calcaneous Axial plantodorsal projection (40 degrees)   8x10 LW; CR 40 degrees to long axis of plantar surface, CR centered to base of 3rd metatarsal, to emerge just distal and inferior to ankle joint; kVp-65; SID-42(tabletop)  
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Calcaneous Lateral   10x12 CW; CR perpendicular 1-1.5 inches distal to medial malleolus; kVp-60; SID-42(tabletop)  
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Ankle AP   8x10 LW or 10x12 CW (2 images per cassette); CR perpendicular to midway between malleoli; kVp-65; SID-42(tabletop)  
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Ankle Lateral   8x10 CW; CR perpendicular to ankle joint entering medial malleolus; kVp-60; SID-42(tabletop)  
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Ankle Oblique   8x10 LW or 10x12 CW (2 images per cassette); CR perpendicular to midway between malleoli; kVp-65; SID-42(tabletop)  
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Ankle AP mortise   8x10 LW or 10x12 CW (2 images per cassette); CR perpendicular to midway between malleoli; kVp-65; SID-42(tabletop)  
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Tib/Fib AP   14x17 diagonal if needed; CR perpendicular to midshaft of leg to mid IR; kVp-65; SID-42(tabletop)  
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Tib/Fib Lateral (external rotation)   14x17 diagonal if needed; CR perpendicular to midshaft of leg (to mid IR); kVp-65; SID-42(tabletop)  
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Knee AP   10x12 LW; CR directed to 1/2 inch below patellar apex. Depending on pt measurement from ASIS to tabletop:<19cm 3-5 degrees caudad, 19-24cm 0degrees, >24cm 3-5 degrees cephalad; kVp-65; SID-42(tabletop)  
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Knee Oblique (45 degrees medial or lateral rotation)   10x 12 LW; CR CR directed to 1/2 inch below patellar apex. Depending on pt measurement from ASIS to tabletop:<19cm 3-5 degrees caudad, 19-24cm 0degrees, >24cm 3-5 degrees cephalad; kVp-65; SID-42(tabletop)  
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Knee Lateral   10x12 LW; CR at 1 inch distal to medial epicondyle at 5-7 degree cephalad; kVp-65; SID-42(tabletop)  
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Patella Lateral (mediolateral)   8x10 LW; CR perpendicular centered to mid-patellofemoral joint space; kVp-65; SID-42(tabletop)  
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Patella PA   8x10 LW; CR perpendicular centered to central patella region (at mid popliteal crease); kVp-65; SID-42(tabletop)  
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Patella Tangential (Settegast or sunrise)   8x10 CW; CR centered to patellofemoral space, if knee is 90 degrees, use 15-20 cephalad to long axis of leg; kVp-65; SID-40(use tape measurement)  
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Femur AP   14x17 LW; CR perpendicular to mid IR; kVp-70; SID-40(bucky)  
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Femur Lateral   14x17 LW; CR perpendicular to mid IR; kVp-70; SID-40(bucky)  
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Hip AP unilateral   10x12 LW; CR perpendicular to femoral neck; kVp-70-80; SID-40(bucky)  
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Hip AP bilateral   14z17 CW; CR perpendicular to midpoint between femoral heads (1inch superior to pubic symphysis); kVp-70-80; SID-40(bucky)  
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Hip Lateral (unilateral "frog-leg")   10x12 CW;CR perpendicular to midfemoral neck or head; kVp-70; SID-40(bucky)  
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Hip Lateral (bilateral "frog-leg")   14x17 CW; CR perpendicular to level of femoral heads (3inches inferior to level of ASISs); kVp-70; SID-40(bucky)  
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Abdomen Upright AP   14x17 LW (blocker down); CR centered to IR and perpendicular to 2 inches above iliac crest; kVp-75; SID-40(bucky)  
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Abdomen KUB AP (supine)   14x17 LW (blocker down); CR centered to IR at level of iliac crests; kVp-75; SID-40(bucky)  
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Sternum PA Oblique, RAO(15-20degrees)   10x12 LW; CR perpendicular to IR, at level of T7, between spine and medial border of scapula; IR positioned 1.5in above jugular notch; kVp-65; SID-40(bucky); Respiration-suspend after deep inspiration  
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Sternum Lateral   10x12 LW; CR perpendicular to IR and entering the lateral border of the midsternum; IR positioned 1.5in above jugular notch; kVp-70; SID-72(bucky); Respiration-suspend after deep inspiration  
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Upper anterior Ribs-PA   14x17 LW or CW depending on body habitus; CR perpendicular to T7; kVp-70; SID-40(bucky); Respiration-suspend after deep inspiration  
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Posterior Ribs- AP upper- unilateral   14x17 LW; CR perpendicular and midway between sternum and lateral skin border of affected side; kVp-70; SID-40(bucky); Respiration-suspend after deep inspiration; IR superior border 1.5in above shoulders  
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Posterior Ribs- AP lower- unilateral   10x12 CW; CR perpendicular and midway between sternum and lateral skin border of affected side; kVp-70;SID-40(bucky); Respiration-suspend after deep expiration; IR inferior border at level of iliac crests  
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Ribs-Axillary-AP oblique-RPO or LPO   14x17 LW; CR perpendicular and midway between sternum and lateral skin border of affected side; kVp-70; SID-40(bucky); Respiration-suspend after deep inspiration; IR superior border 1.5in above shoulders  
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Ribs-Axillary-PA oblique-RAO or LAO   14x17 LW; CR perpendicular and midway between sternum and lateral skin border of affected side; kVp-70; SID-40(bucky); Respiration-suspend after deep inspiration; IR superior border 1.5in above shoulders  
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AP Axial C-spine   8x10 LW; Blocker up; CR 15-20 degrees cephalad at C4 (adams apple for males); pt's MSP centered to IR; Collimate- top of light to mid ear down to jugular notch- tight to neck; kVp-75; SID- 40(bucky); Respiration-suspended  
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AP Open Mouth C-Spine (odontoid)   8x10 LW; Blocker up; CR perpendicular to IR midpoint of open mouth; pt's MSP at center of IR- pt stand still with mouth open comfortably and adjust, then open wide before exposure; Collimate- incisors to tip of chin (4x4); kVp-75; SID-40(bucky); Suspend  
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AP Oblique C-Spine (RPO or LPO)   8x10 LW; Blocker up; CR at C4 and behind ear with 15 degree cephalad; pt stand 45 degree, turn head so parallel with IR toward shoulder resting on IR; Collimate- middle ear to C7; kVp-75; SID-40(bucky); Suspend  
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Lateral C-Spine   8x10 LW; Blocker up; CR perpendicular to C4 and behind the ear; pt relax shoulders or stand on bed sheet & pull edges to bring shoulders down; Collimate- mid ear to C7 & skin borders; kVp-75; SID-72; Suspended  
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AP C-Spine Fuchs   8x10 CW; Blocker up; CR perpendicular to midpoint of IR entering MSP just distal to tip of chin; pt tilt head so mandibular plane is perpendicular to IR; kVp-75; SID-40; Suspended  
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Lateral C-Spine Swimmer's   10x12 LW; Blocker up; CR perpendicular to C7-T1(vertebral prominens)junction with 3-5 degree caudad angle; pt lift arm closest to IR up and rest on head, depress opposing shoudler; Collimate-full length of cassette, tighten sides; kVp-80; SID-40; Suspend  
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AP T-Spine   14x17 LW; Blocker up; CR perpendicular to IR at T7; IR 1.5" above shoulders; Collimate-full length of cassette, width of pinky to thumb; kVp-80; SID-40; Respiration- shallow breathing or suspend at expiration  
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Lateral T-Spine   14x17 LW; Blocker up; CR perpendicular to T7, posterior half thorax in coronal plane behind ear, IR 1.5" above shoulders, arms 90degrees from body; Collimate- 17" length, slightly past skin border; kVp-80; SID-40; respiration as AP T-spine  
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AP L-Spine   14x17 LW; Blocker up; CR perpendicular to level of iliac crests; Collimate- top of IR at xiphoid tip using all 17" length, width pinky to thumb; kVp-80; SID-40 table bucky; Respiration-suspend at expiration  
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AP Oblique L-Spine (right first then left, into left lateral)   14x17 LW; Blocker up; CR level of iliac crests and long axis 2in medial from elevated ASIS; Collimate-top of IR at xiphoid tip using all 17" length, width pinky to thumb; kVp-85; SID-40 table bucky; Respiration-suspend at expiration  
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Lateral L-Spine   14x17 LW; Blocker up; CR at level of iliac crests and MCP centered to IR; Collimate- all 17"length; pt in true lateral, knees and elbows slightly bent in front; kVp-90; SID-40 table bucky; Respiration-suspend at expiration  
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Lateral L5-S1   8x10 LW; Block up; CR centered to coronal plane and 2" posterior to ASIS and 1.5" inferior to iliac crest (finger-thumb);if spine not hrzntl, M-5degree, F-8degree caudad pt in true lateral; kVp-95; SID-40 table bucky; respiration- suspended  
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