<prompt> Basal skull view submentoveical view X-ray is best to visualize :Ethmoid sinusFrontal sinusSphenoid sinusMaxillary sinus  <response>: C i.e. Sphenoid Sinus Pleural effusion is best visualized by X Ray in decubitus posture on same side of pleural effusion. Ipsilateral lateral decubitus is investigation of choice for minimal pleural effusionQ Ipsilateral Same sided lateral decubitus view leads to collection of even minimal fluid in the lateral pleural recess; making diagnosis of minimal pleural effusion easy. In pleural effusion, best view is - ipsilateral lateral decubitusQ - Right pleural effusion Right lateral decubitus view. - Left pleural effusion Left lateral decubitus view. - First 300 ml is not visualized on PA view collect in subpulmonic region first, then spill into posterior costophrenic sinus. Lateral decubitus views may detect as little as 25 m12. Meig Salmon SyndromeQ: primary pelvic neoplasm ovarian thecoma, granulosa cell tumor, Brenner tumor, cystadenoma, adeno CA, fibromyoma of uterus cause pleural effusion, ascites hydrothorax. These resolves with tumor removal. Disorders View Supraorbital Fissure Cald well viewQ Recurrent Shoulder Dislocation Strikers viewQ Sella Turica Scaphoid Patella Lateral skull view Oblique viewQ Skyline viewQ Minimal Pleural Effusion Lateral decubitus IpsilateralQ Pneumothorax PA view in full expirationQ Minimal Pneumoperitoneum Chest X-ray view left lateral decubitus with horizontal beamQ standing erect abdomen View Chest X-Ray Structure seen RAO Rt Anterior Oblique Rt lung Lt. atrium Gall Bladder Mitral Valve LAO Lt. Ant. Oblique Tracheal Bifurcation Rt. Retrocardiac RPO Rt Posterior Oblique space Rt. Middle lobe Rt decubitus View Lardotic view ApexQ Lingual lobeQ Reverse lardotic view Interlobar effusionQ In lingual lobe pathology there is obliteration of left cardiac shadow. Golden S Sign seen in Rt upper lobe collapse. Veiw Structure Seen Cald well Occipito- Frontal View Mn- Fishing Lovely - Superior orbital FissureQ - Lamina papyracea superior margin of orbit - Frontal sinus Best seenQ Front For - Foramen rotundum M - Maxillary sinus E - Ethmoid sinus Waters 0- - Maxillary sinus Best MOccipito Mental seenQ View - Sphenoid sinus i ffilm is Mn - Maximum taken with open mouthQ Spherical - Frontal sinus Front - Intratemporal fossa In the Zym - agoma Zygomatic arch Basal - sphenoid, Posterior submentoveical ethmoid, maxillary sinus View in that orderQ Mn - SPM - Zygoma Zygomatic arch - Mandible along with coronoid Condyloid process Stenvers Oblique - Whole length of petrous posteroanterior bone, petrous tip view - Internal auditory meatus IAM - Semicircular canals superior lateral - Middle ear cleft - Mastoid antrum mastoid process. Perobital view - Best view of IAM if tomography is unavailable - Petrous pyramid apex - Vestibuli - Clinically bifurcation of trachea corresponds to: angle of louisQ lower border of manubrium sterni in front and disc between T4 T5 veebraeQ behind. Trachea is seen as a central radiolucent air filled structure in the upper thorax which divides at the level of 4th thoracic veebra T4 at Clarks usually at D5 or D6 level in adults at AIMPS into the right left main bronchus. View Chest X-Ray Structure seen RAO Rt Anterior Oblique Rt lung Lt. atrium Gall Bladder Mitral Valve LAO Lt. Ant. Oblique Tracheal Bifurcation Rt. Retrocardiac RPO Rt Posterior Oblique space Rt. Middle lobe Rt decubitus View Lardotic view ApexQ Lingual lobeQ Reverse lardotic view Interlobar effusionQ 