Study On Sectional And Imaging Anatomy Of Larynx And Thyroid

ObjectiveUsing normal corpse neck transverse、capital and coronal CT specimens and CT, MRimages, healthy volunteers and neck CT, MR images, and through cadaver dissection andclinical surgical approach operations, discussed in detail the complex relationship betweenthe larynx and thyroid anatomy and adjacent structures for the imaging diagnosis andsurgical lesions of the larynx and thyroid CT,MR images provide anatomical basis.Materials and Methods:To choose people adult corpses neck specimens in12patients7males and5females,respectively, to obtain the neck after the first multi-slice CT and MRI images，5patients getcontinuous transverse layer thickness5mm specimens,5patients get5mm thickness corpseconsecutive coronal anatomy specimens.2cases get5mm thickness continuous capitalanatomy specimens. Selection of10healthy volunteers5males,5females, After using theDutch company Philips1.5T MRI scanner and AW4.4body type image processingworkstation, Get neck transverse, coronal and sagittal MR images. Three patients2malesand1female healthy volunteers,healthy volunteers using the Dutch company PhilipsBrilliance64-slice spiral CT scanning thin line, get neck transverse, coronal and sagittalCT images. The continuous fault samples and CT, MR image control study. Selection offive cases of thyroid corpse neck and throat specimens were finely dissected, Discussed indetail the complex anatomy of the larynx and thyroid and its relationship to surroundingstructures.Results:1. After transaction layer on the upper parts of the side lobe of thyroid thyroid arteryon the side lobe very often divided into anterior and posterior lobe on the side branch bloodthyroid copies, vein and its tributaries and its concomitant thyroid; Anteromedial side lobevisible on copies after copies of the board and cricoid cartilage ring bowcopies,anterolateral cricoid cricothyroid muscle attachment to place, there is to find on a typical laryngeal nerve external branch identification; Between the artery and its branches and thesuperior laryngeal nerve external branch of the superior thyroid certain distance on thelevel, When it is clinically superior thyroid artery near the surgical ligation of the upperlobe of thyroid pole is safe, not easy to damage the external branch of the superiorlaryngeal nerve.2．After the lower parts of the lateral lobe of thyroid transverse layer，recurrentlaryngeal nerve is located tracheoesophageal groove from the bottom row to go up, mostpopular pipe is located right in front of the esophagus, the recurrent laryngeal nerve on theleft side of the line to go ahead on the left edge of the esophagus, located inside the lowerpart of the lateral lobe of thyroid after; The right rear of the recurrent laryngeal nerve onthe right side of the trachea, running on the inside of the rear lower part of the lateral lobeof thyroid. After the deep surface of the inferior thyroid artery to the carotid sheath partsrear side of the inferior thyroid lobe, and the location of the recurrent laryngeal nerve has acomplex relationship, it should be handled under the thyroid thyroid artery away from thepole, so as not to damage the recurrent laryngeal nerve.3. In a joint coronal loop faults, superior thyroid artery in the next part of the thyroidcartilage, the lateral thyrohyoid muscle since the forward outside the line laid down, to thevery top of the thyroid gland is divided into before, after expenses, respectively, along theleading edge of the lateral lobe of thyroid, the trailing edge of the downstream side of theblood supply to the thyroid lobe sake; The external branch of the superior laryngeal nervefrom the lateral lobe of thyroid pole0.5-1.0cm above the superior thyroid arteryaccompanied at the line, to the side of the thyroid lobe on the nerves and arteries near thethyroid poles apart, bent to the inside of the distribution cricothyroid muscle.4. On the sagittal section thyroid cartilage and thyroid cartilage under the outer partsof the visible corner cricothyroid joint, recurrent laryngeal nerve up to the rear of thecricothyroid joint choking, cricothyroid joint called lower than the recurrent laryngealnerve laryngeal nerve, muscle control cricothyroid All except the throat muscles; The jointcan be used as a marker to identify laryngeal nerve.5. Larynx and thyroid autopsy: the extremely high levels of thyroid laryngeal nerveexternal branch of the superior thyroid artery and the distance is15.1±1.6(12.1-17.3) mm,no significant differences on both sides; Near the divided parts of the anterior branch afterbranch, bifurcation from a distance on the thyroid cartilage notch on superior thyroid arterythyroid cartilage is36.0±1.5(35.6-37.0)mm, No significant differences on both sides; In thelower parts of the rear of the thyroid gland thyroid artery and recurrent laryngeal nerve cross the midline crossing of the distance from the trachea is11.2±2.0(10.4-12.0)mm, Nosignificant differences on both sides.Conclusion:1. On the side of the thyroid lobe is the part of the cross-sectional layer to identifytypical levels of thyroid artery and the external branch of the superior laryngeal nervelaryngeal relations accompanied by copies of the thyroid side lobe level of arterialcross-sectional layer is a typical cross-relations under the recurrent laryngeal nerveidentification and thyroid.2. Easily identifiable on the relationship between thyroid artery and concomitantexternal branch of the superior laryngeal nerve in the cricothyroid joint coronal CT; sagittalsection through the thyroid cartilage and the lateral parts of the lower corner of the thyroidcartilage is to identify typical levels laryngeal nerve.3. The horizontal distance pole height laryngeal nerve external branch of the superiorthyroid artery thyroid thyroid surgery for the treatment of thyroid arteries reference value;The superior thyroid artery bifurcation distance from the thyroid cartilage notch on thyroidartery for finding a reference value; Artery and recurrent laryngeal nerve at the intersectionof the inferior thyroid trachea midline distance from thyroid surgery treatment for thyroidartery reference value.