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Wayang kulit, no 1 a fundamentals


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From Dr Ng Kian Seng:"Please send this out to all those coming, it is just a revision of the fundamentals. I dont intend to go through this at the workshop.
I will go straight to the Systematic Reading of the Chest Radiographs. It will take only 10 minutes to run through this powerpoint, so please run through it before coming."

Published in: Health & Medicine, Technology

Wayang kulit, no 1 a fundamentals

  1. 1. CHEST RADIOGRAPHS, WAYANG KULIT<br />A REVISION<br />OF THE FUNDAMENTALS<br />Dr Ng Kian Seng<br />MBBS (Singapore) MCGP (Malaysia)<br />Master Of Medicine (Internal Medicine, Singapore)<br />FAFP (Malaysia) Cert In Occupational Medicine<br />Ph D (Theology, USA)<br />
  2. 2. Hippocrates of Cos, Father of Medicine<br />ANATOMY IN THE <br />CHEST RADIOGRAPH<br />
  3. 3. A Chest Radiograph,<br />Not A Chest X-Ray<br />A Normal Chest Radiograph<br />Some examiners like you to call x ray films radiographs; strictly<br />speaking you can’t actually see the x rays themselves.<br />
  4. 4. Anatomy in the <br />Chest Radiograph<br />The right main bronchus is slightly larger than the left & comes<br />off at a less acute angle than the left (hence septic material &<br />foreign substances are more likely to be inhaled into the right <br /> lung than into the left).<br />
  5. 5. Chest Radiograph, <br />PA View, No 1<br />Apex Of <br /> Lung<br />Carina <br />Trachea <br />Right para-tracheal stripe<br />Aortic arch<br />Main<br />Pulmonary<br />Artery<br />Left Atrial<br />appendage<br />Descending <br /> thoracic <br /> aorta<br />Left <br />ventricle<br />Gastric Air Bubble<br />
  6. 6. Chest Radiograph, <br />PA View, No 2<br /> Right upper <br /> lobe pulmonary <br /> vein <br />Horizontal <br />fissure<br />Right hilum<br />Right lower <br />lobe pulmonary <br />artery<br />Right atrium<br /> Right <br /> Cardiophrenic <br /> Angle <br /> Right <br /> Costophrenic <br /> Angle<br />
  7. 7. Chest Radiograph, <br />PA View, No 3<br />Spinous process<br />Scapula<br />Anterior Rib<br />Clavicle<br />Posterior Rib<br />Right Bronchus<br />Left Bronchus<br />Diaphragm<br />Breast <br />Soft Tissue<br />Lung Tissue<br />Superimposed<br />On diaphragm<br />Retrocardiac <br />vertebra<br />
  8. 8. Chest Radiograph, <br />PA View, No 4<br />Anatomy Of the Heart In The Chest Radiograph<br />
  10. 10. Aorto<br />Pulmonary<br />Window<br />Aorto-pulmonary window. The aorto-pulmonary window lies between <br />the arch of the aorta and the pulmonary arteries. It contains the ligamentum <br />arteriosum, the recurrent laryngeal nerve, lymph nodes, and fatty tissue. ...<br />
  11. 11. RIGHT<br />PARA-<br />TRACHEAL<br />STRIPE<br />From the level of the clavicles to the azygous vein the right edge of the trachea is seen <br />as a thin white stripe. This appearance is created by air of low density (blacker) lying <br />either side of the comparatively dense (whiter) tracheal wall. If this stripe is thickened <br />(normally less than 5 mm) this may represent pathology such as a paratracheal mass or <br />enlarged lymph node. The left side of the trachea is not so well defined because <br />of the position of the aortic arch and great vessels. <br />
  12. 12. Anatomy <br />in the<br />Lateral<br />Chest<br />X-ray<br />1. Ascending thoracic <br /> Aorta<br />2. Sternum<br />3. Right ventricle<br />4. Left ventricle<br />5. Left atrium <br />6. Gastric air bubble<br />7. Right Hemidiaphragm<br />8. Left Hemidiaphragm<br />9. Right upper lobe <br /> bronchus<br />10. Left upper lobe <br /> bronchus<br />11. Trachea.<br />
  13. 13. NAME THE STRUCTURES <br />IN THE LATERAL CHEST X-RAY<br />1.Trachea<br />2. Aortopulmonary window <br />3. Sternum<br />4. Right ventricle <br />5. Right Hemidiaphragm <br />6. Left Hemidiaphragm <br />7. Left atrium <br />8. Scapula <br />9. Right Upper <br />Lobe Bronchus<br />10. Left upper <br />Lobe Bronchus<br />9<br />10<br />
  14. 14. THE MEDIASTINUM<br /> <br />The mediastinum <br />is divided by <br />a plane passing from the <br />sternal angle to T4-T5 into: <br />Superior mediastinum and <br />The inferior mediastinum <br />The inferior mediastinum is <br />further subdivided into <br />three regions namely:<br />Anterior mediastinum <br />Middle mediastinum<br />Posterior mediastinum<br />These divisions are for <br />descriptive purposes, they<br />merge into each other <br />imperceptibly. There are <br />no distinct boundaries <br />between them.<br />
  15. 15. ZONES OF THE CHEST RADIOGRAPH<br />Apex to a line drawn through<br />The lower borders of the<br />Anterior ends of the 2nd costal<br />Cartilage.<br />UPPER<br />ZONE<br />MIDDLE<br />ZONE<br />LOWER<br />ZONE<br />From the 1st line to one drawn<br />Through the lower borders of the<br />4th costal cartilage & includes<br />The Hila of the lungs<br />From the 2nd line to the<br />Bases of the lungs.<br />
  16. 16. THE FISSURES OF THE LUNGS<br />Oblique Fissure From 4 th Dorsal spine sweeping down<br />Obliquely to the 6th rib in mid mammary line or the 6th costo<br /> Chondral junction, anteriorly.<br />Horizontal Fissure. Runs from the 4th costo chondral junction<br /> To meet Oblique Fissure at the mid axillary line.<br />
  17. 17. THE LOBES & FISSURES OF THE LUNGS<br />Base of the Lung: 6th costochondral junction, <br />obliquely to the 10th rib in anterior Axillary line, <br />then horizontally to 12th thoracic vertebra<br />
  18. 18. OBLIQUE FISSURE , HORIZONTAL FISSURE<br />Oblique Fissure : From 4th Dorsal spine sweeping down<br />Obliquely to the 6th rib in mid mammary <br />line or the 6th Costochondral junction, anteriorly.<br />Horizontal Fissure. Runs from the 4th costochondral <br />Junction to meet Oblique Fissure at the mid axillary line.<br />
  19. 19. THE RIGHT & LEFT OBLIQUE FISSURES<br />From 4th Dorsal spine sweeping down<br /> Obliquely to the 6th rib in mid<br />mammary line or the 6th<br />Costochondral junction, anteriorly.<br />
  20. 20. THE HORIZONTAL FISSURE<br />Horizontal Fissure. Runs from the 4th costochondral junction<br /> to meet Oblique Fissure at the Mid Axillary Line.<br />
  22. 22. ACESSORY FISSURE, <br />THE AZYGOS FISSURE<br />.<br />The azygos lobe appears starting in a teardrop shape at around the <br />level of T5 to the right of the midline as a pale line curving outward <br />and upward and then back in to meet the root of the neck, the line <br />is the infolding of the pleura. Also described as a “curvilinear opacity,<br />Inverted comma, tadpole.” (See Notes in “Companion”, J)<br />
  23. 23. Louis Pasteur<br />NORMAL VARIANTS <br />IN THE <br />CHEST RADIOGRAPH<br />
  24. 24. NIPPLE SHADOWS<br />
  25. 25. NIPPLE SHADOWS<br />RIGHT NIPPLE<br />LEFT NIPPLE<br />Confirm these are indeed nipple<br />Shadows by using metal markers!<br />
  26. 26. ASYMMETRY OF THE BREASTS<br />Breast asymmetry is very common, even to the <br />extent that no breast tissue is visible on one side. <br />It should not be assumed that the patient has <br />had a mastectomy, unless this is known from <br />the history. <br />
  27. 27. BONE ISLAND IN THE RIB<br />
  30. 30. FUSION OF FIRST & SECOND RIB<br /> ON THE LEFT<br />
  32. 32. BIFURCATED RIB<br />
  33. 33. Soft tissue fat <br />This close-up demonstrates a normal fat plane between layers of muscle. <br />Fat is less dense than muscle and so appears blacker. Note that the edge <br />of fat is smooth. Irregular areas of black within the soft tissues may <br />represent air tracking in the subcutaneous layers. This is known as <br />surgical emphesyma<br />
  34. 34. What is the bony abnormality in this patient?<br />Chest radiograph is showing well developed bilateral <br />cervical ribs. <br />
  35. 35. Cervical rib is an extra rib that arises from the 7th cervical <br />vertebrae. How do you know these are cervical ribs? And <br />not the 1st thoracic ribs?<br />Cervical<br />Transverse<br />Processes<br />Points <br />Downwards=<br />CD<br />Thoracic<br />Transverse<br />Processes<br />Points <br />Upwards =<br />TU<br />Look at the transverse processes that <br />articulate with these ribs. Cervical <br />transverse processes points down while <br />thoracic transverse processes points up.<br />
  36. 36. Edward Jenner<br />THE BLACK & WHITE<br />RADIOLOGICAL<br />TERMS<br />
  37. 37. RADIODENSITY SCALE<br />Radiodensity : Physical quality of an object that determines how much<br />radiation it absorbs from the X-Ray beam. Radiodensity is determined<br />by composition ( atomic weight) and thickness<br />RADIOLUCENT<br />INCREASING RADIODENSITY<br />DECREASING RADIODENSITY<br />AIR<br />FAT<br />BLOOD<br />MUSCLE<br />BONE<br />BARIUM<br />RADIOPAQUE<br />radioLucent = bLack radiopaquE = whitE<br />
  38. 38. RADIODENSITY SCALE<br />
  40. 40. Antonie von Leeuwenhoek <br />“What is the student but a lover courting a fickle <br />mistress who ever eludes his grasp?”<br /> Sir William Osler<br />Contact Me At : <br />