Publications by authors named "D J Gilderdale"
Article Synopsis
- The study aimed to combine a high intensity focused ultrasound (HIFU) transducer with an MRI receiver coil to enhance thermal treatment for localized pelvic lesions.
- A specially designed probe was created to enable effective acoustic contact and MR compatibility, improving the signal-to-noise ratio (SNR) significantly with modifications to the transducer surfaces.
- Results demonstrated improved imaging quality and phase detection in MR images at subtherapeutic ultrasound levels, facilitating more precise monitoring during treatment.
Purpose: The lack of magnetic resonance (MR) safe catheters and guide wires remains an important obstacle to widespread clinical use of MR-guided endovascular procedures. The authors looked at the feasibility of using multiple tuned fiducial markers (TFM) and novel imaging sequences to track catheters reliably under MR and to evaluate the safety of such markers in terms of heating.
Materials And Methods: The visualization and tracking of a catheter with six quadrature tuned fiducial coils was carried out in a special designed in-vitro setup within a 1.
The authors defined esophageal anatomy and evaluated esophageal cancer staging in a pilot group by comparing endoscopic magnetic resonance (MR) imaging results with pathologic and endoscopic ultrasonographic (US) results when available. A porcine esophagus, one volunteer, and 23 patients suspected of having esophageal cancer were imaged at 0.5 T.
View Article and Find Full Text PDFPurpose: To construct an inductively-coupled receiver coil system for use with a magnetic resonance (MR) compatible endoscope, and to evaluate its use in a pilot group of patients with esophageal cancer.
Materials And Methods: An inductively-coupled coil system, comprising a saddle geometry cylindrical receiver coil fitted as a sleeve around the endoscope tip and a pick-up coil housed within a channel of an MR-compatible endoscope, was designed and developed for use at 0.5 T.
Purpose: To compare, on high-spatial-resolution magnetic resonance (MR) images, the presence and distribution of the paravaginal fascia in continent women and in those with genuine stress incontinence (GSI) to establish its role in the pathophysiology of GSI.
Materials And Methods: Eleven continent reference subjects and 10 GSI patients underwent MR imaging with a specifically designed endovaginal receiver coil. A urinary continence questionnaire and urogynecologic clinical examination had been completed.