NEET MDS Shorts
31048
RadiologyAll of the following are radiolucent except osteopetrosis.
54583
RadiologyGrid is used in radiography to reduce fogging.
39221
RadiologyA lateral cephalogram is used to assess the level of posterior alveolar bone.
47842
RadiologyAccording to Clark's rule for localization of an object, if the tube is shifted mesially to the original angulation, the lingual object moves mesially.
55525
RadiologyLoss of lamina dura and ground glass appearance indicates fibrous dysplasia.
85480
RadiologyThe reflecting layer in intensifying screens is made of titanium oxide and magnesium carbonate. This layer reflects light back toward the film, increasing the efficiency of the screen by ensuring that light photons traveling away from the film are redirected back to contribute to image formation.
48503
RadiologySubmentovertex view is best useful for mandibular fractures.
53604
RadiologyIntensifying screen is used in extraoral radiographs to decrease patient radiation.
34010
RadiologyWaters projection is useful for evaluating all of the above: frontal and ethmoidal sinuses, maxillary sinus, zygomaticofrontal suture and nasal cavity.
24206
RadiologyIn an X-ray tube, the filament (cathode) is heated to produce electrons through a process called thermionic emission. This heating is accomplished by a step-down low voltage transformer, which reduces the high voltage from the power supply to a lower voltage suitable for heating the filament. The step-down transformer ensures that the filament receives the correct amount of current to achieve the necessary temperature for electron production.