Back to the list
Congress: ECR24
Poster Number: C-18808
Type: EPOS Radiologist (educational)
Authorblock: E. Ackermann1, M. i. Soltane1, S. Clausen2, C. Groden1, A. Klempka1; 1Mannheim/DE, 2Heidelberg/DE
Disclosures:
Eduardo Ackermann: Nothing to disclose
Mohamed ilyes Soltane: Nothing to disclose
Sven Clausen: Nothing to disclose
Christoph Groden: Nothing to disclose
Anna Klempka: Nothing to disclose
Keywords: CNS, Computer applications, CT, Education, Image verification
Background

PC-CT Imaging: High-resolution PC-CT scans were conducted on both programmable shunt valves using a Naeotom Alpha (Siemens Healthinieers, Germany) with a spiral temporal bone protoccol with settings Hr84 Q2 in 1 mm slice thickness with a minimal increment of 0.1 mm, KV 120, mAs (quality reference) 71, pitch factor 0.35, exposure time per rotation 0.5s. Multiplanar reconstructions in multiple orientations and at different levels of both valves were reconstructed by an expierenced radiologist (10 years) using the Syngo.via software (Siemens Healthineers) available at our institution.

Component Identification: Functional parts of the shunt valves were meticulously identified and labeled in conjuction with the instructional manual of the manufacter (Miethke) [3, 4].

 

Shunt Valve A (Pro Gav. 2.0 Fa. Miethke):

Figure 1: Presents a coronal view of the valve on the left and on the right three transversal sections at 0,5 mm interval illustrating the intricate valve design.

A: a portion of the triangular apex with a circular radiopaque marking of the adjustable differential pressure unite.

B: the rotor in the center of the valve and on the right side of the image the radiolucent marking of the shunt valve, which functions as landmark when reading the pressure setting. 

C: triangular base of the rotor with a circular radiopaque marking of the adjustable differential pressure unite.

 

Figure 2: Demonstrates a gravitational unit with a radiopaque tantalum ball as well as a sapphire ball (a. coronar, b. saggital, c. transversal).

 

Shunt Valve B (M. Blue Fa. Miethke):

Figure 3: Presents a coronal view of the M. Blue valve on the left.  On the right are three transverse sections of the valve demonstrating key features.

A: Radiolucent sapphire ball of the adjustable gravitational unit in the middle of the picture and the radiopaque Tantalum weight (large hollow ball) located at the non-adjustable range. 

B: Radiopaque circular markings at the tringular base of the rotor.

C: Differential pressure unit with pressure ratings with one coding burrhole seen transversally as a radiolucent band on the left. 
GALLERY