(a.) Impervious to the rays of light; not transparent; as, an opaque substance.
(a.) Obscure; not clear; unintelligible.
(n.) That which is opaque; opacity.
Example Sentences:
(1) "Maybe dullness is associated with psychic pain," Wallace wrote at one point, "because something that's dull or opaque fails to provide enough stimulation to distract people from some other, deeper type of pain that is always there, if only in an ambient low-level way, and which most of us spend nearly all our time and energy trying to distract ourselves from."
(2) It should also be realised that, in a very few hospitals, swabs which do not have an opaque marker may occasionally be used in theatre.
(3) The colors of mixtures of dental opaque porcelains and modifiers were measured with use of the CIE L*a*b* uniform color space.
(4) Type II pigment is extremely electron-opaque after staining with heavy metals to the extent that they appear practically amorphous.
(5) In conclusion, the use of metoclopramide in the postoperative period did not result in a quicker return of propulsive motility in the right or left colon as judged by the radio-opaque markers and serial abdominal radiographs.
(6) At the former site the membrane overlying the bud showed an electron opaque thickening which imparted to the mature particle an asymmetrical appearance.
(7) At that time, the universe underwent a crucial change: it went from being opaque to transparent.
(8) Our data confirm the poorer short-term orientation performance of jaundiced infants treated with phototherapy but do not indicate that covering the eyes with an opaque screen improves behavioral organization.
(9) All patients had at least one laparotomy, at which time a biopsy was obtained, radio-opaque clips were placed to define the extent of the gross tumor, and usually some form of bypass procedure was performed.
(10) Two types are present, a crystalline (clear) form and a white, opaque form with pigmentation resulting from a diene rubber.
(11) In two of these cases, pathologic findings included opaque ciliary body cysts, a ciliochoroidal effusion, retinal microaneurysms and hemorrhages, and detachment of both the sensory retina and the retinal pigment epithelium.
(12) The WF-1 are originally arranged around the WF-2, as small electron opaque granules making a dark ring, to move towards the periphery of the macrogamete body with maturation.
(13) Five fish with lateral lines cut at the opercula were unable to school when wearing opaque eye covers.
(14) A combined morphological, autoradiographic, and cytochemical study at the electron microscope level has been directed towards the formation of electron-opaque granules of cultured macrophages.
(15) The intranuclear spindle of yeast has an electron-opaque body at each pole.
(16) On lecithin agar, interpretation was easier, phospholipase A was detectable, and opaque zones were visible 1 or 2 days earlier than on egg yolk agar.
(17) New light-curable adhesive opaque resins were prepared using 4-methacryloxyethyl trimellitate anhydride (4-META), triethylene glycol dimethacrylate (TEGDMA), di (methacryloxyethyl) trimethylhexamethylene diurethane (UDMA) and titanium dioxide.
(18) In particular, most prototrophic strains obtained from patients with localized infection had proteins I with molecular weights varying from 35,000 to 38,000 daltons and gave predominantly opaque colonies.
(19) Resulting specimens yield an excellent view of the skeletal system and the injected vascular system without obstruction by opaque tissues or disruption by physical removal of connective tissue.
(20) Follicles greater than or equal to 5 mm in diameter were classified as clear (n=68) or opaque (n=72) based on their surface appearance.
Venogram
Definition:
Example Sentences:
(1) Our study suggests that Doppler ultrasonography is highly predictive of a negative venogram, particularly in the low-risk patient.
(2) There was no evidence of deep vein thrombosis or pulmonary embolism in 123 patients, as determined by an absence of clinical signs, a negative impedance plethysmogram and a negative venogram.
(3) Venograms were obtained in 17 patients 5-8 days after percutaneous dilatation of the common femoral vein for insertion of the Kimray-Greenfield inferior vena cava filter.
(4) Hepatic venograms were abnormal and the changes correlated well with the pressure gradients between hepatic venous wedge and free hepatic vein and with the histological changes in the liver.
(5) We report both this case and information regarding phlegmasia and therapy of PCD to promote awareness of this disorder among radiologists and nuclear medicine physicians who perform radionuclide venograms.
(6) 113 venograms were obtained; they demonstrated the presence of isolated proximal vein thrombosis in seven patients, seven isolated calf vein thromboses and 43 thromboses of both proximal and calf veins.
(7) The large number of coincidental circumstances that result in an abnormal accumulation of 125I fibrinogen lead us to believe that venogram is the procedure of choice in patients with symptoms simulating thrombophlebitis.
(8) In total, 174 lower extremity venograms were obtained.
(9) Peripheral venograms completed by pulmonary arteriography or scintigraphy were obtained for all patients.
(10) The venogram accurately demonstrates viability in 77% of 50 routinely fixed subcapital fractures.
(11) Venograms demonstrated complete or partial filling of the superior sagittal sinus in each experiment.
(12) The sinus was quite evident on venograms of five patients.
(13) No difference between the two groups was seen for the number of catheter infections, the number of catheters with poor flow or obstruction, the coagulation screening of the patients or the time-length between the removal of the last catheter and the venogram study.
(14) Unfortunately, closer examination of the data reveals several flaws, including overreliance on venogram data and lack of adequate long-term follow-up.
(15) A left circumaortic renal vein was found in 11% of 74 left renal venograms, an incidence similar to that at autopsy.
(16) The percentage venograms adjudicated as inadequate by at least one radiologist and inter-observer disagreement for both series were used as the main study outcome measures.
(17) It is concluded that the incidence of venous thrombosis after long-term transvenous pacing is extremely low in the Chinese (4%), and venograms are both safe and useful for identifying venous thrombosis related to transvenous pacing.
(18) In one case oliguria occurred after performance of a venogram; renal function returned to normal after two weeks of intermittent peritoneal dialysis, emphasizing the reversibility of the renal failure in some cases.
(19) We examined the charts of all patients who had aortograms, venograms, and carotid arteriograms for a five-year period, beginning two years prior to the opening of our vascular lab, to determine the effect on these studies.
(20) To determine whether the Rabinov-Paulin or the long-leg venography technique should be preferred in the diagnostic management of patients with clinically suspected deep-vein thrombosis, two independent experienced radiologists blindly assessed two different series of venograms of consecutive outpatients with clinically suspected deep-vein thrombosis.