By Wolfgang Seeger
In this atlas anatomical facets very important for mixtures of microsurgical and endoscopic methods are awarded and illustrated. glossy imaging innovations are invaluable for the third-dimensional orientation yet don't exhibit adequate information for endoscopic interventions. The small visible fields desire a mixture of the depiction of excellent information and of the third-dimensional presentation of enormous components.
Furthermore, issues of little identified anatomical regular versions of the objective components might come up. for that reason, a variety of universal anatomical versions are confirmed during this publication as regards to their influence for the surgical technique.
The foundation for Professor Seeger’s well known drawings has been anatomical arrangements, cadaver dissections and intraoperative images. the right kind proportions are derived by means of measuring the distances of anatomical landmarks of cranial arrangements and from CT and MR pictures. The concise textual content helps the knowledge of the anatomical figures.
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Extra info for Endoscopic Anatomy of the Third Ventricle: Microsurgical and Endoscopic Approaches
Cerebri int. m Velum interpositum n Fissura transversa o Atrium p Plexus chorioideus q Septum pellucidum r Cavum septi pellucidi 36 37 FIG. 11 ANATOMICAL BACKGROUND 38 Fig. 12 Splenium corporis callosi and Tectum. Common findings According to MRTs of normal individuals, simplified Narrow distant measurements of Splenium and Tectum, especially Corpus pineale. At surgery, the galenic vein may be loosened and lateralized Black arrows: Relationships of Splenium and Colliculi supp. 39 FIG. 12 ANATOMICAL BACKGROUND 40 Fig.
At surgery, the galenic vein may be loosened and lateralized Black arrows: Relationships of Splenium and Colliculi supp. 39 FIG. 12 ANATOMICAL BACKGROUND 40 Fig. 13 Tectum – Anatomical dissections After removal of Arachnoidea and vessels A B Tectum with Corpus pineale and its connections to Thalamus (Habenula) Area of Habenula vulnerable. Here: Rupture of Commissura habenularum Fenestration after rupture between Corpus pineale and Tectum. After this, the 3rd ventricle is open with presentation of Commissura post.
17 and 18) Fig. 17 Comparison of translaminar and transforaminal approaches A Translaminar approaches – Favorable: Presentation of the posterior area of the 3rd ventricle – Unfavorable: Subdural approach along Falx sometimes may be obstructed by gaps of Falx. It contains bifrontal subarachnoid adhesions B Transforaminal approaches – Favorable The subdural route is less obstructed by adhesions Short subarachnoid route Variable approaches along a wide area of Falx may be used, if necessary – Unfavorable Surgical procedures in the posterior area of the 3rd ventricle are not possible.