Sleep and daily functioning during androgen deprivation therapy for prostate cancer.

A limited body of evidence suggests that sleep problems are common in prostate cancer patients undergoing androgen deprivation therapy, yet little is known about sleep characteristics and the effects of poor sleep on daily functioning in this population. This study assessed sleep in 60 prostate cancer patients taking androgen deprivation therapy with wrist actigraphy and daily diaries for 7 days. The Epworth Sleepiness Scale and the general version of the Functional Assessment of Cancer Therapy scale were also administered. On average, total sleep time was 5.9 (SD = 1.4) h, and sleep efficiency was 75% (SD = 12.0) as assessed by actigraphy. There was generally poor concordance between actigraphy and daily diary for most sleep metrics. Subjects reported awakening, on average, 2.7 times per night, most commonly for nocturia and hot flashes. Assessment of daily functioning showed that participants had mild daytime sleepiness, which was predicted by total sleep time (F(1,47) = 4.5, P= 0.04) General quality of life was not impaired. This study supports more research on the predictors of poor sleep in order to identify effective interventions.

First-pass ventricular ejection fraction using a single-crystal nuclear camera.

UNLABELLED: The purpose of the study was to evaluate the reliability of ejection fractions obtained from first-pass radionuclide ventriculography with a large field-of-view tomographic single-crystal gamma camera. METHODS: A SPECT camera had its electronics redesigned to improve counting efficiency and was equipped with an experimental ultra-high sensitivity collimator. Left ventricular ejection fraction (LVEF) was measured in 28 patients by 30 degrees RAO first-pass imaging and by "best septal view" LAO planar equilibrium radionuclide ventriculography on a conventional small field of view Anger camera. For 28 other patients, first-pass ejection fractions were compared to multicrystal gamma camera values. Visual analysis was performed to judge clinical acceptability of first-pass images for identification of wall-motion abnormalities. RESULTS: Linear regression analysis of first-pass against equilibrium ejection fraction demonstrated good correlation (r = 0.92; slope = 0.90; intercept = 3.8; s.e.e. = 6.4%). First-pass ejection fraction values also correlated linearly with multicrystal camera values for the left ventricle (r = 0.94; slope = 1.05; intercept = 1.3; s.e.e. = 5.3%). For a subgroup of 19 patients, single-crystal camera right ventricle ejection fraction demonstrated good correlation with multicrystal camera values (r = 0.82; slope = 1.15; intercept = 1.3; s.e.e. = 6.1%). Interobserver variability correlated as r = 0.99 for LVEF ejection fraction and r = 0.92 for RVEF. Chi-square analysis of single-crystal first-pass image visual scores versus those from the gated equilibrium acquisitions showed close agreement (p < 10(-8)). CONCLUSIONS: The evaluated camera/collimator system measured left and right ventricular ejection fraction accurately. Lung frame correction and dual regions were superior to paraventricular background correction and a fixed end-diastolic region.

Afferent loop obstruction documented with hepatobiliary imaging.

This report concerns a case of afferent loop obstruction secondary to carcinoma of the gastric stump. Radionuclide hepatobiliary imaging was used to document the afferent loop obstruction.

Bilateral anteromedial defect of the diaphragm in children.

Four cases are reported, along with a review of the literature, to demonstrate the radiographic and clinial spectrum of bilateral anteromedial defect of the diaphragm in infants and children. Bilateral anteromedial defect of the diaphragm produces a characteristic radiographic pattern on herniation of abdominal structures through a single midline opening. The usually solid herniated structures elevate the heart and thymus producing a three-tiered snowman appearance. The lateral chest view substantiates the anterior location differentiating anteromedial herniation from eventration, partial or complete. Diagnosis can be confirmed by pneumoperitoneography but the high incidence of liver herniation allows less invasive determination by radionuclide scanning. While many patients will be asymptomatic, clinical symptoms can be severe due to pulmonary compression and hypoplasia or associated cardiovascular abnormalities.

The Anger camera and the pertechnetate ion in the routine evaluation of thyroid uptake and imaging.

The thyroid traps the pertechnetate ion and iodine in a similar manner. Thus, 99mTc-pertechnetate may be used for thyroid uptake studies (including stimulation and suppression tests)8 as well as imaging. Images are obtained after an intravenous administration of 2--4 mCi of 99mTc-pertechnetate, and the scan is preceded by a trapping index at 20 minutes, measured as the neck to thigh ratio. In 1973, we compared 99mTc-pertechnetate with 131I in diagnostic uptake and imaging studies of the thyroid gland in 100 patients. We have had experience with an additional 100 patients, and modified our procedure so that the Anger camera with pinhole collimator will adequately replace the standard scintillation probe. Using the camera alone, with the 99mTc-pertechnetate makes the study less expensive and briefer, with no loss of information. Routine use of the scan aids in distinguishing diffuse from localized diseases.

Gallium-67 scanning and conservative treatment in acute inflammatory lesions of the renal cortex.

Three cases of suspected acute suppurative lesions of the renal cortex treated successfully with antimicrobial agents are presented. In support of other reports it appears that selected cases, particularly when diagnosed early, may be managed conservatively without surgical drainage. In those cases of severe sepsis, large intrarenal or perinephric abscesses, resistant organisms or those that are refractory to treatment, surgical intervention may be unavoidable. Gallium-67 nuclear scanning is a safe, non-invasive method of locating rapidly these areas of inflammation and has proved to be a useful tool in earlier diagnosis.

Decreased uptake of 67gallium citrate (67Ga) by a bacterial hepatic abscess. Report of a case.

A case of anaerobic bacterial hepatic abscess presenting as a "cold" lesion with 67Ga is presented. Its implications in the differential diagnosis and overreliance in metronidazole treatment are discussed.

"Hot spot" on hepatic scintigraphy and radionuclide venacavography.

Seven patients showing a localized area of increased uptake (hot spot) on 99mTc sulfur colloid liver scans are described. Four also had dynamic studies. In five patients the hot spot was associated with superior vena caval obstruction, in one it was associated with inferior vena caval obstruction, and in one with a hepatoma. Although a hot spot on static liver images usually indicates superior vena caval obstruction, the addition of radionuclide venacavography is recommended to confirm the diagnosis. A hot spot in the liver area in a radionuclide venogram of the lower limbs suggests inferior vena caval obstruction with collaterals via the liver.

Radionuclide angiographic diagnosis of bronchopulmonary sequestration.

Bronchopulmonary sequestration (BPS), a congenital malformation that usually presents as a chest mass in childhood, may be identified by its characteristic primary derivation of pulmonary blood supply from the systemic circulation. Five children with BPS were evaluated by radionuclide angiography from 1970 to 1974. In each instance the systemic origin of the vascular supply was correctly indicated. In those lesions where the artery originates below the hemidiaphragm, the aberrant source, when identified as such, provides a characteristic radionuclide appearance of BPS. The scimitar syndrome may be indistinguishable from BPS with this technique.

Papillary necrosis in a child with homozygous sickle-cell anemia.

A 4 1/2-year-old girl with S-S sickle-cell anemia was found to have papillary necrosis on excretory urography. This is believed to be the first reported case of papillary necrosis in a child with homozygous S-S sickle-cell anemia.