Biomedical subjects

M Parrilla

Publications and source records attributed to M Parrilla.

3 recordsLinked to original sources

PubMed2000

A multirate scan conversion method

B-mode ultrasonic imaging requires that the acquired polar coordinate ultrasound data be converted to the Cartesian format used by digital monitors. Image quality depends on the interpolation algorithm used to this purpose. In this work a selective sampling technique, based on acquiring data at specific points of the scanned area together with a straightforward linear interpolation step, is proposed. Hardware complexity is avoided, because the interpolation task can be carried out by software in real time, concurrently with data acquisition. The performances of the proposed approach are analysed with regard to those provided by other algorithms and some implementation issues are addressed.

Journal Article↗

PubMedDate not supplied

[Duodenal duplication cyst].

The duodenal duplication cyst is an uncommon inherited anomaly. Its etiology is related to malformations of the canal in the gastrointestinal duct during the formation of the embryo. It develops in the infancy period or during childhood, it is uncommon in adults. The most frequent finding, is abdominal mass, although it might appear along with obstructive symptoms, recidivante pancreatitis and digestive bleeding. The diagnosis is based on image methods (ultrasonics, radiology, computed tomography, CPRE), nevertheless its identification through ultrasonics is of great value. Therefore we consider important the introduction of a 72-year-old woman case, whose pre-surgery diagnosis was performed with ultrasonics and reaffirmed by all other image methods. We also mention the usefulness of inner-surgery ultrasonics, in the surgery case of this pathology.

Aged↗

PubMedDate not supplied

[Leiomyosarcoma of the vena cava inferior. The correlation: ultrasound and fine-needle puncture biopsy].

The leiomyosarcoma of the inferior vena cava is a non-frequent tumor, mesenchymal, that has its origin in the smooth muscular tissue of the vascular wall. Its growth is slow and expansive, more frequently found on females. The symptomatology is related to the cava segment where it is located. The diagnosis is performed by ultrasonics, computed tomography and cavography, actually magnetic resonance acquires more and more importance. The treatment is specifically surgery along with radiotherapy and chemotherapy. A case of leiomyosarcoma of the inferior vena cava is presented in which diagnosis was performed using ultrasonics, tomography and cavography confirmed before surgery by biopsy punction with thin needle. In the diagnosis of this pathology it is described the use of intro-surgery ultrasonics.

Biopsy, Needle↗