Diagnostic imaging by radioisotopes. basic (III). Radioisotope imaging by gamma camera.

Feasibility of portable gamma camera imaging in intraoperative radioguided parathyroid adenoma identification

Novel surgical applications include radioguided procedures in parathyroidectomy operations. In order to investigate the feasibility of usage of the portable gamma camera in parathyroidectomy operations; intraoperative radioguided parathyroidectomy operation was performed in three hyperparathyroidism patients with inconclusive preoperative parathyroid scintigraphy results. Intraoperative portabl...

Estimation and calculation of radiation dose of copper-64 for nuclear medicine usage

Radioactive materials used in nuclear medicine are the radioisotopes or drugs that are identified with radioisotopes. A radiopharmaceutical transfusion is one of diagnostic methods and a radiation value approved should be measured. The nuclear medicine images of diagnostic methods can be made by a gamma camera (γ-camera). In this article, we used MCNPX2.4 for internal dosimetry assessment when ...

Determination of Optimum Planar Imaging Parameters for Small Structures with Diameters Less Than the Resolution of the Gamma Camera

Introduction: The limited spatial resolution of the gamma camera hinders the absolute quantification of planar images of small structures. The imaged structures are affected by partial volume effects (PVEs), which can spread activity and lead to underestimation of the regional distribution.  The use of optimum planar parameters reduces the impact of the limited spatial resolution of the gamma c...

Prevalence of Renal Ectopia by Diagnostic Imaging

Background: Renal Ectopia is a congenital anomaly with variable clinical presentation. This study was conducted to know prevalence of renal ectopia in patients with abdominal complaints. Material & Methods: This cross-sectional study was carried out at Radiology Department, District Head Quarter Teaching Hospital, Dera Ismail Khan, Pakistan, from 1st January 2005 to 31st December 2007. Ultrason...

Brain Tumors Diagnostic by Tumor Imaging Agents