interpretation uj

8/2/2019 Interpretation UJ

1/69


2/69

The ability to see and understand what isrevealed by a radiographic image.


3/69

Importance of recognizingnormal anatomy

The independence ofradiographic signs toimaging modalities

The principle of symmetry

Radiographic signs:terminology anddescription

Categorization of diseaseand/or abnormalities


4/69


5/69


6/69


7/69


8/69

Saggital

Coronal

Axial Maxilla

Axial Mandible


9/69

posterior

anterior

right left

leftrightanteriorposterior

superior

inferior

superior

inferior

left

left

Saggital Coronal

Axial


10/69

buccal/facial

facial

lingual

buccal/facial


11/69


12/69


13/69


14/69

Global Assess symmetry of form and density Follow cortical boundaries Count teeth

Local Assess periodontal ligament space and lamina dura Evaluate root form and canal structure Assess crowns for caries or abnormality


15/69

Patient information Age, sex, race

History

Symptoms Clinical examination Existing diagnostic radiographs Image selection Initial examination of images


16/69

Just as we use signs in

interpreting art we canuse signs to interpret

radiographs


17/69

Systemic - Metabolic

Diagnostic Radiograph

AbnormalNormal

AcquiredDevelopmental

Congenital

Trauma

Inflammation

CystTumor:

Benign vs

Malignant

Fibro-osseous

And lesions of bone

Vascular

IMPRESSION


18/69

Language of Interpretation


19/69


20/69

Terminology : Radiolucent Lesions


21/69


22/69

Unilocular Radiolucent Lesionwith Non-Corticated Borders


23/69


24/69

Multilocular Radiolucent Lesion (cont.)


25/69


26/69


27/69


28/69


29/69


30/69

Terminology : Radiopaque Lesions


31/69

Focal Opacity


32/69

Target Lesion


33/69


34/69

Irregular and ill-defined radiopaque pattern


35/69

Ground-Glass Radiopacity


36/69

Ground-Glass Radiopacity (cont.)


37/69

Mixed Density Lesion


38/69

Mixed Density lesion:Mostly cystic withflecks of calcification


39/69


40/69

Mixed Lucent-Opaque Lesion in thePericoronal Location


41/69

Mixed Lucent-Opaque Lesion in thePericoronal Location (cont.)


42/69

Soft Tissue Opacity


43/69

Calcified lymph nodes

Sialoliths

Tonsilloliths

Phleboliths (calcified blood clots)

Calcified carotid atheromas

Calcified laryngeal cartilage and triticeous cartilage


44/69

Dome shaped opacity in the sinus


45/69


46/69


47/69


48/69


49/69


50/69


51/69


52/69

52 year old femalewith hypertension

Stroke in 1987


53/69


54/69

1. Radiographic density2. Margin characteristics3. Shape4. Location and distribution5. Size6. Internal architecture7. Effect on surrounding tissue


55/69

Benign

Radiolucent Mixed radiolucent-radiopaque Septations, loculations Radiopaque

Malignant

Always radiolucent, except: Metastases

Breast cancer Prostate cancer

Osteogenic sarcoma


56/69

Benign Well-defined

narrow zone of transition Smooth, regular Corticated

Malignant" Ill-defined:

" wide zone of transition" Ragged" Moth-eaten


57/69


58/69

Round Oval Undulated Unilocular Multilocular Soap bubble


59/69

Benign

Round or ovalMalignant

Irregular


60/69

unilocularmultilocular


61/69

Benign

Expansion Thinning Aggressive benign may

erode

Malignant" Erosion" Destruction


62/69

Benign

Displacement

Malignant

Erosion Destruction


63/69

Benign

Displacement mandibularcanal

No neuro-sensory deficits

Malignant

Invasion and destruction ofcanal

Anesthesia, paresthesia


64/69

Benign

Displacement May prevent eruption

Malignant

Floating teeth


65/69


66/69

Benign Horizontal or near

horizontal

Malignant More variable Sometimes no

root resorption Spiked roots


67/69


68/69

B celllymphoma


69/69

interpretation uj

Documents