AIMS To find the simplest method for quantifying pleural effusion volume from CT scans. METHODS Seventy pleural effusions found on chest CT examination in 50 consecutive adult patients with the presence of free pleural effusion were included. The volume of pleural effusion was calculated from a three-dimensional reconstruction of CT scans. Planar measurements were made on CT scans and their t...

OBJECTIVE We retrospectively analyzed all primary aldosteronism (PA) patients undergoing NP-59 SPECT/CT imaging with regard to their clinicolaboratory and imaging features, investigation, and outcomes. MATERIAL AND METHODS 11 PA patients who presented to our hospital for NP-59 SPECT/CT imaging between April 2007 and March 2012 and managed here were analyzed. RESULTS Among 11 PA patients, ei...

In this paper we present a novel technique for rapidly partitioning surfaces in range images into planar patches. Essential for our segmentation method is the observation that, in a scan line, the points belonging to a planar surface form a straight line segment. On the other hand, all points on a straight line segment surely belong to the same planar surface. Based on this observation, we rst ...

Improvements in Bo mapping and shimming were achieved by measuring the static field information in multiple subsequent echoes generated by an asymmetric echo-planar readout gradient train. With careful compensation, eddy current effects were shown to affect the adjustment of the shim coils minimally. In addition to reducing the time required for field mapping by two-fold, the sensitivity was si...

Radionuclide 99mTc-MDP planar bone scan is the most commonly performed nuclear medicine procedure and may aid diagnosis of benign and malignant bone pathologies. 99mTc-MDP is injected intravenously and subsequently taken up by osteoblasts and incorporated into the bone matrix. In the process it acts as a marker for new bone formation, bone turnover and local vascularity. The high sensitivity of...

Nine cases of adolescent back pain show that a diagnosis of spondylolysis cannot be made on physical examination alone and that single photon emission computed tomography (SPECT) scanning revealed pars interarticularis stress lesions undiagnosable on planar technetium-99 bone scan. As management of spondylolysis differs from other lumbar dysfunctional problems SPECT scanning of children should ...

Scan performance of infinite planar arrays can be approximated using Floquet excitations in a large but finite array. This method is evaluated for arrays of dipoles with and without a backscreen for comparison with exact unit cell results.

| A high-density silicon-substrate multi-chip module construction is shown which provides new features for testing the assembled mixed-signal bare dies and integrated passive devices. Among these features are enhanced possibilities for testing bare dies not equipped with boundary-scan cells. Additionally, relatively simple means for electron-beam diagnosis become possible. The approach uses a c...

We present a case of a 15-year-old boy with osteoblastic osteosarcoma of the left distal femur. The patient was referred to bone scan for initial staging. On planar bone scan, there is increased uptake of 99mTc-MDP (99mTc-methylene diphosphonate) in the left distal femur. There are also multiple sites of abnormal tracer uptake projecting to the thoracic cage, initially assumed to be localized i...