Case: Quadricuspid Pulmonary Valve
Case history
64 year-old female presents with history of neck and chest pain.
Diagnosis
Thickened quadricuspid pulmonary valve. Aneurysmal dilatation and asymmetry of pulmonary arteries. Stenosis of mid LAD with a component of myocardial bridging.
Description
Had “Definition” not been available, patient would have been imaged using routine helical sequence at presumably larger dose. Aortic dissection could have easily been ruled out, however the quadricuspid pulmonary valve and LAD myocardial bridge may not have been appreciated.
Protocol
| Tube voltage 1 (kV) | 100 |
| Tube current 1 (mAs) | 169 |
| DLP | 215 |
| CTDI | 6,33 |
| Contrast Media | 120 |
| mSv | 3,0 |
| Siemens Scanner | SOMATOM Definition |
This case has been submitted to the Siemens Image Quality Contest 2010.
Keywords:
The CTDI value written here is 6,33 mGy, how small dose I think. how can it be, can you tell me? because most of CT examinations in my country resulting CTDI about 50’s mGy
This case demonstrates the considerable dose savings of prospective ECG gating acquisition and 100 kV tube currents. These dsoe savings have beeen well documented in several recent publications involving the Definition scanner-thank you, Chip Gilkeson