Unenhanced CT scanning can reliably characterize incidentally detected adrenal masses when observers use density measurements of the gland. However, controversy exists as to optimal threshold required differentiate benign from malignant lesions. This study attempts establish a consensus by performing pooled analysis data found in literature. Ten reports were analyzed, which individual lesion obtained for 495 lesions (272 and 223 lesions). Threshold generated range sensitivities specificities...

To evaluate the ability of positron emission tomography (PET) to characterize adrenal masses in patients with cancer.Twenty-four (size range, 1.5-10.0 cm [mean, 2.8 cm]) 20 (13 men and seven women) cancer (lung [n = 10], colon 3], lymphoma miscellaneous 4]) were evaluated. PET was performed fasting 45 minutes after infusion 5-10 mCi (185-370 MBq) 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (FDG). images correlated findings at computed (CT), surgery, and/or percutaneous biopsy.Fourteen proved...

The purposes of this study were to evaluate the ability chemical shift MR imaging differentiate 1- 5-cm adrenal adenomas from metastases and compare subjective interpretation with several different quantitative measures.Forty-three patients 46 proved lesions (28 18 metastases) had a gradient-echo breath-hold technique echo time varied obtain in-phase out-of-phase images. Qualitative analysis images was done by three experienced observers, who reported their confidence in diagnosing benignity...

In Brief BACKGROUND: The cricothyroid membrane (CTM) is the recommended site of access to airway during cricothyroidotomy provide emergency oxygenation. Despite apparent simplicity technique, this rescue maneuver frequently fails achieve its goals and complications are numerous. reasons for failure unclear. We sought determine ability physicians correctly identify CTM in female patients. METHODS: Using fluorescent "invisible" ink, physician was asked mark with patient supine neutral position...

Excretory phase CT urography for opacification of the urinary collecting system.M M McNicholas, V D Raptopoulos, R K Schwartz, G Sheiman, A Zormpala, P Prassopoulos, Ernst and J PearlmanAudio Available | Share

The purpose of this study was to develop an algorithm using CT and chemical-shift MR imaging for the characterization adrenal masses in patients with a primary cancer no other evidence metastatic disease.Thirty-three 37 (19 metastases, 18 adenomas), all whom had known cancer, were studied noncontrast (1.5 T). Lesion size density Hounsfield units (H) determined by CT. Adrenal signal intensity normalized that spleen used calculate adrenal-spleen ratio (ASR), defined as percentage remaining...

Color Doppler sonography in the evaluation of palpable breast masses.M M McNicholas, P Mercer, J C Miller, E W McDermott, N O'Higgins and D MacErleanAudio Available | Share

Pain and increased mammographic density in women receiving hormone replacement therapy: a prospective study.M M McNicholas, J P Heneghan, H Milner, T Tunney, B Hourihane D MacErlaineAudio Available | Share

PURPOSE: To demonstrate the capability of magnetic resonance (MR) imaging to assess alteration in regional pulmonary ventilation and perfusion with animal models airway obstruction embolism. MATERIALS AND METHODS: Airway was created by inflating a 5-F balloon catheter into secondary bronchus. Pulmonary emboli were injecting thrombi inferior vena cava. Regional assessed 100% oxygen as T1 contrast agent. two-dimensional fast low-angle shot, or FLASH, sequence short repetition echo times after...

No AccessJournal of UrologyUrological Survey: Abstracts: Imaging1 Jan 1999Characterization Adrenal Masses Using Unenhanced CT: An Analysis the CT Literature G.W.L. Boland, M.J. Lee, G.S. Gazelle, E.F. Halpern, M.M.J. McNicholas, and P.R. Mueller BolandG.W.L. Boland More articles by this author , LeeM.J. Lee GazelleG.S. Gazelle HalpernE.F. Halpern McNicholasM.M.J. McNicholas MuellerP.R. View All Author Informationhttps://doi.org/10.1016/S0022-5347(01)62163-3AboutFull TextPDF ToolsAdd to...

We describe the unique CT features of ureteric calculi in six HIV-infected patients receiving indinavir, most commonly used HIV protease inhibitor, which is associated with an increased incidence urolithiasis.Ureteric obstruction caused by precipitated indinavir crystals may be difficult to diagnose unenhanced CT. The are not opaque, and secondary signs absent or minimal should sought carefully. Images need obtained using i.v. contrast material enable diagnosis stones infection who receive therapy.

Abstract Accurate preoperative staging of rectal cancer is necessary to identify patients who might benefit from adjuvant therapy. Magnetic resonance imaging (MRI) was evaluated in 20 consecutive with undergoing ‘curative’ surgery. Detailed histopathological examination the resected lesion correlated findings MRI. MRI concurred histological 18 using Dukes or tumour node metastasis classification but only 14 modified Astler–Coller system. diagnosed transmural invasion all one patient...

One hundred ten consecutive patients were given either whole (4%) milk, 2% water, barium suspension, or no oral contrast agent before abdominal computed tomography (CT). Results with milk superior to those all other agents for gastrointestinal distention, mural visualization, and pancreas-duodenum discrimination. In bowel loop discrimination, results 4% equal but agents. Whole is an effective low-attenuation agent.

To examine the value of real-time ultrasonography (US) in assessment traumatized eyes with opaque ocular media.Sixty-one 60 patients were prospectively examined US; findings correlated clinical and surgical follow-up. Patients an intraocular foreign body (IOFB) also underwent computed tomography (CT).US demonstrated 56 vitreous hemorrhages, 21 retinal detachments, 12 five choroidal seven IOFBs, three dislocated lenses, two retrohyaloid hemorrhages. Findings US surgery or follow-up complete...

To evaluate the accuracy of conventional transrectal ultrasonographic (US) prostate volume formula and determine whether a more accurate formula, calculated on basis shape as observed at planimetry, can be described for majority glands.This retrospective study was institutional review board approved, with waiver informed consent. A total 138 consecutive patients who underwent brachytherapy were included analysis. Prostate estimated by using prolate ellipsoid (length x height width [pi/6])....

Purpose: To assesses consensus review of discordant screening mammography findings in terms its sensitivity, safety, and effect on overall performance the first 6 years operation Irish National Breast Screening Program (NBSP). Materials Methods: Women who participated NBSP gave written informed consent for use their data auditing purposes. Local ethics committee approval was obtained. The study population consisted women underwent initial at one two centers serving eastern part Ireland...

The purpose of this study was to compare the safety and efficacy transpleural extrapleural approaches for draining left subphrenic abscesses in patients who have had splenectomy. Twenty-five percutaneous catheter drainage (28 drainages) postsplenectomy fluid collections were studied. Twenty drainages eight extrapleural. In 20 drainages, it elected place transpleurally. remaining 12 patients, judged be on review, despite efforts use an approach. Sixteen 18 six seven true (subcostal) cured by...

Abstract Background Antibiotic stewardship programs in primary care are necessary to reduce the estimated 30% of inappropriately written antibiotic prescriptions and spread microbial resistance. Most focus on educating prescribers, but this intervention focused patients. Objectives To develop implement an program a clinic educate patients with upper respiratory infections (URIs) about use assess effectiveness through prescribing rates. Methods Using materials from Centers for Disease Control...